3M C860 Installation Instructions Manual

Typical Single Lane Installation...................................................................................................................... 1 Battery Charger ............................................................................................................................................... 2 Speaker and Microphone Assemblies.............................................................................................................. 3 Standard Systems...................................................................................................................................... 3 Duplex Systems ........................................................................................................................................ 3 Face–to–Face Type Duplex Systems ........................................................................................................ 3 Base Station..................................................................................................................................................... 3 Interconnect Module (Optional)...................................................................................................................... 4 Connecting the Base Station Directly to Components .................................................................................... 5 Connecting the Base Station to Components Using the Optional Interconnect Module................................. 6 Connecting the Auxiliary Intercom (Optional) ............................................................................................... 8 Dual Lane System Installation......................................................................................................................... 9 Cross Lane System Installation ....................................................................................................................... 10 System Configurations and Function Jumper Settings.................................................................................... 14 Standard Operation – Single Lane System (One Base Station) ................................................................ 14 Standard Operation – Dual Lane System (Two Base Stations) ................................................................ 14 Duplex Operation – Single Lane System (One Base Station)................................................................... 15 Duplex Operation – Dual Lane System (Two Base Stations)................................................................... 15 Channel Selection............................................................................................................................................ 16 Setting Audio Levels....................................................................................................................................... 17 Duplex Systems Only ............................................................................................................................... 18 Duplex and Standard Systems .................................................................................................................. 18 Alert Tone Level....................................................................................................................................... 18 Monitor Speaker Volume Levels........................................................................................................ 19 Standard Systems Only............................................................................................................................. 19 Listen Level (Menu Sign Microphone Sensitivity) ............................................................................ 19 Menu Sign Talk Volume Level .......................................................................................................... 19 Circuit Board Jumpers, Adjustment Controls, Indicators and Switches.......................................................... 21 Jumpers ..................................................................................................................................................... 21 Adjustment Controls ................................................................................................................................. 22 Indicators................................................................................................................................................... 22 Switches (etc.)........................................................................................................................................... 22 Connectors ................................................................................................................................................ 23 Finishing Up.................................................................................................................................................... 24 Troubleshooting Audio Feedback ................................................................................................................... 24 Technical Assistance ....................................................................................................................................... 24

1 Figure 2. Battery Chargers (3–Slot and 6–Slot Versions).............................................................................. 2 Figure 3. Base Station Mounting Holes ......................................................................................................... 3 Figure 4. Interconnect Module....................................................................................................................... 4 Figure 5. Direct Base Station–to–Component Connections........................................................................... 5 Figure 6. Base Station – Interconnect Module Connections.......................................................................... 6 Figure 7. Connecting Components to the Interconnect Module .................................................................... 7 Figure 8. D–15D (M478 DA) Connections.................................................................................................... 8 Figure 9. D–15B and D–15C (M478 BA and CA) Connections.................................................................... 8 Figure 10. D–30 Connections ........................................................................................................................ 9 Figure 11. Cross–Lane Wiring Diagram........................................................................................................ 11 Figure 12. Removing the Half–Cover from the Base Station ........................................................................ 16 Figure 13. Base Station Circuit Board ........................................................................................................... 17 Figure 14. Base Station Circuit Board ........................................................................................................... 21

Figure 1. Typical Installation Material Required (not supplied) • 3/4–inch conduit (metal or plastic) – 2 pieces 4–5 feet in length • conduit clamps • assortment of sheet metal screws • two sets of 18–gauge, twisted–pair (two wires each set) audio cable, sufficient in length to connect the speaker and microphone assembly (in the menu sign) to the interconnect module or base station. ! Important The twisted–pair of wires for the microphone connection must be shielded for proper operation. In duplex systems, microphone and speaker cannot be in the same jacket unless specially designed for duplex such as 3M 78–8095–0180–8. • sufficient twisted–pair sets of audio cable to connect other components such as monitor speaker, vehicle detection device, etc.

Install the battery charger in a clean, dry environment. An office location is best. The battery charger may be placed on a flat surface such as a table, desk, etc., or it can be fastened to a wall using the optional wall–mount kit. Plug the power supply transformer into a 120–Volt wall outlet and then plug the transformer cord into the connector in the end of the battery charger. The three green lights on the battery charger will turn on. To charge a battery, plug it into the charger as shown in Figure 2. Observe the charging status indicator next to the battery: • The indicator lights RED to indicate the battery is charging. • The indicator lights GREEN to indicate the battery is fully charged. • The indicator lights ORANGE to indicate the battery is defective. 9 Note Discharged batteries require 1–1/2 to 2 hours to charge. When the battery voltage becomes too low, a short, low volume tone, occurring at seven–second intervals is heard in the headset. This repeating tone continues for two minutes. After the two–minute interval, the headset automatically turns off to prevent battery damage. Figure 2. Battery Chargers (3–Slot and 6–Slot Versions)

Standard Systems For standard systems, install the Deluxe 5–Inch Speaker and Microphone Assembly, Part Number 78–6911–1545– 1. Refer to the installation instructions packaged with the assembly. Duplex Systems For duplex systems, install the 3.5–Inch Duplex Microphone (with foam housing), Part Number 78–6911–4476–6 and the 5–Inch Metal Speaker Assembly, Part Number 78–6911–4411–3. Refer to the installation instructions packaged with the assemblies. Face–to–Face Type Duplex Systems The 3M Communications Bar, Part Number 78–6911–4451–9 contains the Duplex Speaker and Microphone listed above. Refer to the installation instructions that are packaged with the assembly. Base Station 1. For proper system operation, locate the base station module: • 5 to 6 feet above the floor • at least 10 feet from the cashier/drive–thru window • At least 3 feet from large metal objects such as refrigerators, ranges, coolers, etc., and other metal or electrical devices. ! Important Do not mount base station under steel countertops, within 3 feet of coolers/refrigerators/ranges or in areas where it will be obscured by steel doors, walls, etc. as this will cause operational problems. 2. Mount the base station using the included screws and anchors. (See Figure 3.) Figure 3. Base Station Mounting Holes 3. Install conduit and cable clamps as necessary. 4. Feed the cables for speaker, microphone, vehicle detect and monitor speaker (if used) through the conduit down to the interconnect module or base station. (See Figure 1.) 5. Feed the transformer cable from the outlet to the base station. (See Figure 1.) Keep the transformer cable at least 6 inches from the left half of the base station. This half contains sensitive radio components which will be affected if the cable is too close.

1. Install the interconnect module in an “out of the way” location, near the wiring for the auxiliary intercom, vehicle detector, etc. (Under a counter is desirable.) 2. To fasten the interconnect module in position: a. Remove the backing from the adhesive hook and loop fastener material on the rear of the module. b. Orient the module to provide the most convenient wire connection arrangement. c. Press the adhesive surface of the hook and loop fastener material against a flat, smooth surface. The module is now removable for wiring and if needed, future servicing. Figure 4. Interconnect Module

If an interconnect module is not used, connect the components (vehicle detector, speaker/microphone and optional monitor speaker) directly to the base station as shown in Figure 5. Use 18–20 gauge twisted pair audio wire for all connections except the microphone. Use an 18–20 gauge shielded twisted–pair of audio wire for the connection to the microphone. ! Important The twisted–pair of wires for the microphone connection must be shielded for proper operation. In duplex systems, microphone and speaker cannot be in the same jacket unless specially designed for duplex such as 3M 78–8095–0180–8. Figure 5. Direct Base Station–to–Component Connections

Connect the base station to the interconnect module as shown in Figure 6. Note that the connections are made to the “TO CONTROL MODULE” terminals on the interconnect module. Figure 6. Base Station – Interconnect Module Connections Connect the components (vehicle detector, speaker/microphone, and optional monitor speaker) to the interconnect module as shown in Figure 7. Note that the connections are made to the “TO OUTSIDE” terminals on the interconnect module. *Note If an optional back–up (auxiliary) intercom is connected to the “TO AUXILIARY INTERCOM” on the interconnect module, the base station must be turned off to enable operation/usage of the back–up intercom. Use 18–20 gauge twisted–pair audio wire for all connections except the microphone. Use an 18–20 gauge shielded twisted–pair audio wire for the connection to the microphone.

2 EA. 1500 OHM Resistors Supplied MYH Duplex Mic

*Note The base station must be turned off to enable operation/use of the auxiliary intercom. 1. Connect the auxiliary intercom to the “TO AUXILIARY INTERCOM” terminals on the interconnect module as shown in Figure 8 through Figure 10 (depending on the model of intercom used). The presence alert shown is wired to operate only when the Wireless Base Station is turned off. If a separate outside microphone is used, the auxiliary intercom must be configured for OUTSIDE MIC. Refer to the Auxiliary Intercom Installation Instructions for information about moving any internal jumpers. Figure 8. D–15D (M478 DA) Connections Figure 9. D–15B and D–15C (M478 BA and CA) Connections

be provided for the Wireless Base Station. (Both the Wireless Base Station and D–30 intercoms require separate monitor speakers.) Figure 10. D–30 Connections Dual Lane System Installation A dual lane system consists of two separate single lane systems that operate independently of each other. Each single lane system has its own dedicated base station and headset(s). To install a dual lane system: 1. Install two single lane systems as outlined in these installation instructions. ! Important Base station models C921 and earlier must be mounted at least 25 feet apart. Base station models C922 may be mounted as close as 2 feet apart. 2. With the base stations turned off, set jumper J3 on one of the base stations so that it jumpers pins 1 and 2. This designates the base station as a lane 1 system. 3. Set jumper J3 on the other base station so that it jumpers pins 2 and 3. This designates the base station as a lane 2 system. ! Important Do not set both base stations to the same lane number as this will cause operational problems. 4. Turn on both base stations and press the RESET SWITCH on each of the base station circuit boards to “read” the jumper setting into the microprocessor.

select the channel, press the RESET SWITCH on the base station circuit boards to “read” the selection into the microprocessor. 6. Re–program the headsets as instructed on page 15. 1. Check the operation of each of the systems. Note that the alert tone for the Lane 1 system headsets is a single repeating “beep” while the alert tone for the Lane 2 system headsets is a double repeating “beep.” Cross-Lane System Installation Description The Cross-Lane System is designed for facilities that have two menu signs. It consists of two Wireless Base Stations that are connected to a Cross–Lane Module. A Cross–Lane Module is a five–pole switch that allows the two systems to be separated during hours of peak activity. The Cross-Lane System can be used with C760, C860, C960, C1025, and C1060 headsets. The C760 headset may require additional equipment. A Cross–Lane Module can be useful if the manager wishes to operate each lane with a separate crew during periods of peak activity. This is accomplished by turning the Cross–Lane switch OFF. By pressing the T1 button on any headset, the operator can communicate with a customer at menu sign 1. By pressing the T2 button on any headset, another operator can communicate with a customer at menu sign 2. When the Cross–Lane Module is OFF, the operator will only hear the vehicle detector alert from the menu sign with which he or she last talked. During periods of lower activity, the Cross–Lane Module is turned ON, allowing one headset order–taker to operate both lanes. When the Cross–Lane Module is turned ON, the operator will always hear vehicle detector alerts from both menu signs. A single alert indicates a vehicle is a menu sign 1, while a double alert indicates a vehicle is at menu sign 2. Additional Material Required • A sufficient length of two-conductor 20 AWG twisted pair shielded audio cable (not supplied) for connecting the Cross- Lane Module to the two base stations. • Applicable screws/fasteners (not supplied) for mounting the Cross-Lane Module. Installation Notes: Both base stations must be set to the same channel number and different lane numbers. Base station models C921 and earlier must be mounted at least 25 feet apart. Base station models C922 may be mounted as close as 2 feet apart. Test the system prior to installation by placing the base stations in the desired locations. Set Jumpers and program the headsets. Insure that the talk L.E.D. on the proper base station lights when the appropriate (T1 and T2) button on the headset is pressed.

1. Use the applicable screws/fasteners and mount the Cross-Lane Module to the wall in a convenient location next to one of the base stations. Note To ensure access to the switch on the Cross-Lane Module, locate the module near one of the base stations. 2. Run a length of two-conductor 20 AWG twisted pair shielded audio cable between the Cross-Lane Module and the nearest base station. 3. Run a length of two-conductor 20 AWG twisted pair shielded audio cable between the Cross-Lane Module and the other base station. 4. Connect the cables from the module to the base stations as shown in Figure 1. Important! Both Base stations must be set to the same channel number and different lane numbers. Important! For proper operation, the base stations must be at least 25 feet apart. Figure 11

Follow the steps below to program the headsets for Cross–Lane operation, and disable the Talk—Lock function. It does not matter which base station is used to program the headsets. By pressing T1, the headset will communicate with the lane 1 base station; by pressing T2, the headset will communicate with lane 2 base station. 1. Disable the Talk Lock function: Talk–Lock is a toggle function that must be checked first to see if it is enabled or disabled. If the Talk LED on the base station lights when the L button is pressed, Talk–Lock is enabled. • To disable Talk–Lock, turn the headset OFF, press and hold the L button while pressing ON for 5 seconds. You will hear a series of beeps indicating that Talk–Lock is off. • Recheck the Talk–Lock function by pressing the L (talk-lock) button. The Talk LED on the base station should not light. 2. Programming the headsets for Cross–Lane Operation: a. Start with the headset OFF. Then, hold down the T1 and T2 buttons while pressing ON for 5 seconds. You will hear a series of beeps indicating that the headset has been programmed. b. Verify that the headsets are properly programmed for Cross–Lane operation as follows: (1) Press T1 and verify that the Talk LED lights on the lane 1 base station and does not light on the lane 2 base station. (2) Press T2 and verify that the Talk LED lights on the lane 2 base station and does not light on the lane 1 base station. c. To remove the Cross–Lane function and return the headsets to the normal (single lane) operating mode, first turn the headset OFF, and then do one of the following operations: – For lane 1 operation only, hold down T1 while pressing ON for 5 seconds. You will hear a series of beeps indicating that Cross–Lane function is no longer active. Reprogram the headsets from the lane 1 base station if you want to communicate with lane 1. – For lane 2 operation only, hold down T2 while pressing ON for 5 seconds. You will hear a series of beeps indicating that Cross–Lane function is no longer active. Reprogram the headsets from the lane 2 base station if you want to communicate with lane 2. Operation Cross–Lane Module OFF: Vehicle detector alerts The operator will only hear the vehicle detector alert from the menu sign with which he or she last talked. Vehicles at menu sign 1 will be heard as a single repeating alert. Vehicles at menu sign 2 will be heard as a double repeating alert. Answering customers Pressing T1 will only allow communications with the lane 1 customer. Pressing T2 will only allow communication with the lane 2 customer. Paging function Pressing the P (Page) button will communicate using the base station last communicated with (via T1 or T2). Headsets programmed for the last used base station will receive the page.

Vehicle detector alerts The operator will always hear both vehicle detector alerts. Vehicles at menu sign 1 will be heard as a single repeating alert. Vehicles at menu sign 2 will be heard as a double repeating alert. Answering customers Pressing T1 will only allow communications with the lane 1 customer. Pressing T2 will only allow communication with the lane 2 customer. Paging function Pressing the P (Page) button will communicate using the base station last communicated with (via T1 or T2). Headsets programmed for the last used base station will receive the page. Notes: 1. Both vehicle alert tones will be heard at all times with the Cross–Lane Module ON. The order–taker may object to hearing the vehicle alert from the other lane while taking an order, if so, we suggest you decrease ALERT TONE LEVEL on each base station so that it is audible in the headsets but not objectionable. 2. Listening and Paging in a Cross–Lane system. The T1 and T2 buttons control which menu sign to talk or listen to. They also control which headsets to Page to. If a cook or cashier needs to monitor both lanes follow the suggestions below: • The cook/cashier can press T1 when they hear a single alert tone or, they can press T2 when they hear a double alert tone. • Paging function: a. When order-taker Pages cook/cashier: If cook/cashier is listening on lane 2, order-taker must press T2 then Page cook/cashier. b. When cook/cashier Pages order-taker: If order-taker is listening on lane 2, cook/cashier must press T2 then Page order-taker. • A monitor speaker from each base station may be installed in the kitchen. CAUTION! Monitor speakers are generally not recommended for duplex systems using base stations earlier than Model C921BA. The speaker location and volume are usually too critical to avoid feedback. C921BA and C922 base stations can usually be configured successfully to allow operation of monitor speakers.

! Important Whenever a jumper setting is changed, the RESET SWITCH on the base station circuit board must be pressed to program the new jumper setting into the microprocessor. Also, each of the headsets in the system must be reprogrammed when a jumper setting is changed (see Channel Selection on page 14 for the headset programming procedure). Determine the system type (standard operation – single lane, etc.) and identify the type of speaker (speaker only or speaker and microphone) and the type of vehicle detector (air switch or loop/SODAR detector). Refer to the base station circuit board illustration (Figure 14) and the applicable system configuration below. Set the function jumpers as noted and per the type of speaker and vehicle detector in the system. (An illustration of the circuit board also appears on the decal inside of the base station half–cover.) Standard Operation – Single Lane System (One Base Station) Function Jumper Settings Menu Sign with Speaker only (OSM) Jumper pins 1 and 2 on jumpers J1 and J2. or or Menu Sign with Separate Speaker and Microphone Jumper pins 2 and 3 on jumpers J1 and J2. Lane 1 System Jumper pins 1 and 2 of jumper J3. Air Switch (Pulse) Detector Jumper pins 1 and 2 of jumper J4. or or Loop/Sodar (Presence) Detector Jumper pins 2 and 3 of jumper J4. Standard Operation Jumper pins 2 and 3 of jumper J5. Menu Power Selection Jumper must cover the top 2 pins of jumper J6. Talk Monitor Level Jumper left 2 pins of jumper J9. SWT Threshold (High) Jumper CRFT 2 pins when using a C1060 headset in Talk Lock mode. SWT Threshold (NRML) Jumper right 2 pins for all configurations except those mentioned in “High.” Standard Operation – Dual Lane System (Two Base Stations) Function Jumper Settings Menu Sign with Speaker only (OSM) Jumper pins 1 and 2 on jumpers J1 and J2. or or Menu Sign with Separate Speaker and Microphone Jumper pins 2 and 3 on jumpers J1 and J2. Lane 1 System Jumper pins 1 and 2 on base station 1, jumper J3. Lane 2 System Jumper pins 2 and 3 on base station 2, jumper J3. Air Switch (Pulse) Detector Jumper pins 1 and 2 of jumper J4. or or Loop/Sodar (Presence) Detector Jumper pins 2 and 3 of jumper J4.

Menu Power Selection Jumper must cover the top 2 pins of jumper J6. Talk Monitor Level Jumper left 2 pins of jumper J9. Duplex Operation – Single Lane System (One Base Station) Function Jumper Settings Menu Sign with Separate Speaker and Microphone Jumper pins 2 and 3 on jumpers J1 and J2. Lane 1 System Jumper pins 1 and 2 of jumper J3. Air Switch (Pulse) Detector Jumper pins 1 and 2 of jumper J4. or or Loop/Sodar (Presence) Detector Jumper pins 2 and 3 of jumper J4. Duplex Operation Jumper pins 1 and 2 of jumper J5. Menu Power Selection Jumper bottom 2 pins of jumper J6. Talk Monitor Level Jumper left 2 pins of jumper J9. or If feedback occurs, jumper right 2 pins of jumper J9 Duplex Operation – Dual Lane System (Two Base Stations) Function Jumper Settings Menu Sign with Separate Speaker and Microphone Jumper pins 2 and 3 on jumpers J1 and J2. Lane 1 System Jumper pins 1 and 2 on base station 1, jumper J3. Lane 2 System Jumper pins 2 and 3 on base station 2, jumper J3. Air Switch (Pulse) Detector Jumper pins 1 and 2 of jumper J4. or or Loop/Sodar (Presence) Detector Jumper pins 2 and 3 of jumper J4. Duplex Operation Jumper pins 1 and 2 of jumper J5. Menu Power Selection Jumper bottom 2 pins of jumper J6. Talk Monitor Level Jumper left 2 pins of jumper J9. or If feedback occurs, jumper right 2 pins of jumper P9.

Select a channel that neither receives or causes interference and then program the headsets to that channel using the following procedure: 1. Pull slightly outward on the lower right side of the base station half–cover and then lift and remove the cover as shown in Figure 12. Figure 12. Removing the Half–Cover from the Base Station 2. With the base station turned on, press and release the CHANNEL SELECT switch once. This advances the system to the next channel. One of the red indicators (1–8) will light, indicating the newly selected channel. ! Important After making any changes to the base station jumper settings, you must press the RESET SWITCH to “read” the new settings into the microprocessor. ! Important When two systems are used in a dual lane application, each base station must be set to the same channel, and one base station must be set to Lane 1 and the other to Lane 2. *Note If you are installing this as a single lane system, 8 channels on the LANE 2 setting are also available for use.

Figure 13. Base Station Circuit Board 3. With the headset/belt pack turned on, plug one end of the programming cable into the headset programming jack. 4. Plug the other end of the programming cable into the base station modular jack. Audible tones will be heard in the headset earpiece indicating that programming is complete. The headset/belt pack is now programmed to the same channel as the base station. Repeat the channel selection procedure if interference occurs. After seven channel changes, the original channel will again be encountered. If interference is still present and the system is a single lane system, try changing the J3 lane designation jumper from lane 1 to lane 2. If this fails and none of the channels are interference free, contact your 3M representative. Setting Audio Levels To set the audio levels, refer to the related audio level procedure below and to the illustration of the base station circuit board (Figure 14). All the audio level adjustment controls are located on the base station circuit board. An illustration of the circuit board also appears on the decal mounted to the base station.

The following procedure sets system audio levels for duplex systems so that headset/belt pack volume controls have enough “range” to allow operators to adjust headset volume to their preference. *Note The microphone at the menu sign must be located within four feet of the vehicle for duplex operation. To set the audio levels: 1. Turn the base station MENU MIC SENS control to minimum (CCW). 2. Adjust the headset volume control to maximum. 3. Press the headset Talk switch, and set the base station outbound (DAY/NIGHT) audio levels to the desired level at the post/sign. 4. Press and hold the headset/belt pack Talk switch, and turn the base station MENU MIC SENS control up (CW) until feedback occurs. Then turn the MENU MIC SENS level control down (CCW) until the feedback stops. 5. Check each additional headset/belt pack (to be used in the system) at maximum volume. Verify that feedback does not occur. If feedback occurs, adjust the MENU MIC SENS level down until the feedback stops. 6. Lower the volume control on the headset/belt pack 2 levels from maximum, and check that the inbound audio level from the menu mic is usable. If everything is all right, the audio will be too loud. 7. Compare this inbound listen level in the headset to the page audio level from another headset. 8. Adjust the MENU MIC SENS level down (never up) to match the page audio level as required. 9. If the inbound listen level cannot be made to match the page audio level, then more acoustic isolation is needed for the menu mic and menu speaker. This procedure ensures that feedback will not occur even if the headset/belt pack is run at its maximum setting. It is also a measure of how the menu sign/post components are placed in relation to one another. Duplex and Standard Systems *Note For Duplex systems, the microphone at the menu sign must be located within four feet of the vehicle for duplex operation. For Standard (half–duplex) systems, jumper J6 must be placed in the STD position. The following procedures apply to both duplex and standard systems. Alert Tone Level The alert tone level is the volume of the alert tone heard in the headset. To set the alert tone level: 1. Turn the headset off and then on. (This sets the volume control to midrange.) 2. Have someone drive a vehicle up to the menu sign. When the vehicle is detected, you will hear the vehicle alert tone in the headset. 3. Adjust the HEADSET ALERT LEVEL control to provide a comfortable alert tone level in the headset (clockwise to increase; counterclockwise to decrease).

The monitor speaker volume levels are the levels for the various functions heard through the optional monitor speaker. All adjustment controls are located on the base station circuit board. Turn the controls clockwise to increase the volume and counterclockwise to decrease volume. To set the monitor speaker volume levels: 1. Set the master MON VOLUME control to the midrange position. 2. With a vehicle detected at the menu sign (alert tone sounding), adjust the MON ALERT control so that the alert signal coming through the monitor speaker is at a suitable level. 3. Press and hold the headset Talk switch and speak into the headset microphone. Adjust the MON TALK control so that the talk audio coming through the monitor speaker is at a suitable level. 4. Press the headset Page switch and speak into the headset microphone. Adjust the MON PAGE control so that the page audio coming through the monitor speaker is at a suitable level. 5. While you listen to audio coming from the menu sign, adjust the MON IN control so that the menu sign audio coming through the monitor speaker is at a suitable level. *Note If any monitor functions are not desired by the customer, turn the related adjustment control fully counterclockwise to silence the function. Standard Systems Only The following procedures apply only to standard systems. *Note For Standard (half–duplex) systems jumper J6 must be placed in the STD position. Listen Level (Menu Sign Microphone Sensitivity) The listen level is the volume of the menu sign audio heard in the headset. To set the listen level: 1. Turn the headset/belt pack off and then on. (This sets the volume control to midrange.) 2. Have someone drive a vehicle up to the menu sign. When the vehicle is detected, you will hear the vehicle alert tone in the headset/belt pack. 3. Press and release the headset Talk switch to cancel the alert tone and allow you to listen to the audio from the menu sign. 4. Adjust the MENU MIC SENS level control for the desired volume (clockwise to increase volume; counterclockwise to decrease.) The Listen Level should now be properly adjusted. Because the headset/belt pack volume control was set at midrange, there will now be enough range (up/down) in the headset/belt pack volume control to allow operators to set the headset volume to a preferred level. Menu Sign Talk Volume Level The menu sign talk volume level is the volume of the headset/belt pack audio heard at the menu sign. To set the menu sign talk volume level: 1. Move the DAY/NIGHT switch on the base station to the DAY position.

3. Adjust the DAY menu sign audio level control for the desired audio level at the menu sign (clockwise to increase; counterclockwise to decrease.) 4. Move the DAY/NIGHT switch on the base station to the NIGHT position. 5. Press and hold the headset/belt pack Talk switch and speak into the headset microphone. 6. Adjust the NIGHT menu sign audio level control so that the audio level at the menu sign is slightly lower than the DAY audio level setting (clockwise to increase; counterclockwise to decrease.)

Figure 14. Base Station Circuit Board Jumpers J1 and J2 Set for the type of menu sign in the system. Jumper pins 1 and 2 on both jumpers for menu signs having a speaker only. Jumper pins 2 and 3 on both jumpers for menu signs having a speaker and a microphone. J3 Set to designate the number of the lane in the system. Jumper pins 1 and 2 to select lane 1. Jumper pins 2 and 3 to select lane 2. J4 Set for the type of vehicle detector in the system. Jumper pins 1 and 2 for an air switch detector. Jumper pins 2 and 3 for a loop/sodar detector. J5 Set to designate the type of communication operation. Jumper pins 2 and 3 for standard operation. Jumper pins 1 and 2 for duplex operation. J6 MENU PWR SEL – STD or DPLX STD – applies power to outbound speaker amplifiers only when the TALK switch is pressed. Note: for Standard (half–duplex) operation J6 MUST be placed in the STD position. DPLX – applies power to outbound speaker amplifiers constantly. This will reduce the click that is sometimes heard in duplex mode when the TALK button is pressed. J9 TALK MON LVL REDUCE – reduces the volume to the Monitor Speaker by 16dB while TALK is activated. This decreases the chance of feedback when a headset is operating near the Monitor Speaker in duplex mode. FULL – unreduced volume to monitor speaker in all modes. *Note This setting may cause feedback when a headset is operating near the monitor speaker in duplex mode.

SWT THLD refers to Switch Threshold. This jumper is used to change the dynamic gain threshold circuitry of the menu microphone. It should normally be set to NRML. Occasionally, the inbound audio volume will decrease when C1060 headsets are used in Talk Lock mode. Set jumper J10 to HIGH, in this case only. HIGH – Jumper the left two pins ONLY if a decrease in inbound volume is noticed while C1060 headsets are being used in Talk Lock mode. NRML – The Normal setting is used for all configurations except those mentioned in “HIGH.” ! Important After changing any jumper setting(s), be sure to press the RESET SWITCH on the base station circuit board to “read” the change into the microprocessor. Adjustment Controls MENU MIC SENS Controls the volume of the menu sign audio heard in the headset. HEADSET ALERT LEVEL Controls the volume of the alert tone heard in the headset. DAY Controls the volume heard at the menu sign with the Day/Night switch in the Day position. NIGHT Controls the volume heard at the menu sign with the Day/Night switch in the Night position. MON VOLUME Master volume control for the following functions heard through the optional monitor speaker: MON ALERT MON IN MON PAGE MON TALK Controls the alert tone level. Controls the audio level coming from the menu sign. Controls the page audio level coming from the headset/belt pack microphone. Controls the talk audio level coming from the headset/belt pack microphone. *Note If any of the monitor functions are not desired by the customer, turn the appropriate adjustment control completely counterclockwise to silence that particular function. Indicators POWER CHANNEL 1–8 LOOP FAILURE DETECTOR POWER NRM VEHICLE TALK PAGE Lights when power is applied to the base station. Lit LED indicates which channel is selected for base station operation. (Optional) Flashes if vehicle loop fails. (Optional) Lights if optional Loop Detector is functioning. (Optional) Flashes slowly if optional noise reduction module is functioning. Lights when a vehicle is detected at the menu sign. Lights during communication between headset/belt pack and menu sign. Lights during paging from headset/belt pack. Switches (etc.) ON/OFF Switch DAY/NIGHT VOLUME Switch NRM ON/OFF Controls power to the base station. Selects volume for day or night operation. (Optional) Press to turn noise reduction module ON. Press to turn noise reduction module OFF.

Programming Jack RESET Switch Selects base station operating channel. For programming headsets/belt packs to the same channel as the base station. For programming new channel selection or jumper setting(s) into the microprocessor. Connectors: AUXILIARY Terminal Strip J7 J8 An extra 4 terminals at the bottom of the right–hand terminal block. Loop Detector Connector Noise Reduction Connector (under left half–cover)

2. Replace the cover on the base station module. 3. Check the operation of the system. 4. Check the operation of the auxiliary intercom. 5. Perform operator training, including the following functions: • Normal use and care of the system. • Use and care of the headset. • Battery replacement and recharging. • Operation of the base station module switches and controls. • Operation of optional Noise Reduction Module • Operation of Loop Detector Refer to the Model C960/C860 Headset Intercom System Operating Instructions. Troubleshooting Audio Feedback If audio feedback occurs, check the following and correct as necessary: • Is the microphone audio cable shielded twisted pair – grounded at the inside end? • Is the microphone audio wiring separately contained in its own cable, with no other “active” wires in the same cable? • Are the speaker and microphone at least 14 inches apart? • Is the outbound audio level too high? • Is speaker audio being reflected back to the microphone from nearby surfaces? Technical Assistance For technical assistance, call 1–800–328–0033 or write to: 3M Commercial Care Division Food Service Business 3M Center St. Paul, MN 55144–1000

©3M 2003 October 78-6912-0672-2 Rev. H Commercial Care Division Food Services Business 3M Center St. Paul, MN 55144-1000