DPCAV AV680RX Quick Start Manual

Rev-B Kit INTRODUCTION Thanks to this handy kit, building a high performance 5.8GHz A/V receiver has never been easier. The kit provides a custom printed circuit board set and quality electronic components. NOTICE: This kit requires assembly and is NOT recommended to beginners. It is suitable for amateur radio hobbyists, RF technicians, and engineers. The builder must have good quality soldering tools, an anti-static work environment, and electronic assembly experience. BILL OF MATERIALS QTY DESCRIPTION DESIGNATOR NOTES ==== =================== ============ ========================= 4 .1uF Cap C3, C5, C11, C12 4 47uF Cap C1, C2, C7, C9 Observe polarity 4 470uF/10V Cap C4, C6, C8, C10 Observe polarity 2 2.2 1/8W Resistor R4, R5 Red/Red/Black 1 220 1/8W Resistor R4 Red/Red/Brown 3 3.3K 1/8W Resistor R1, R2, R3 Orange/Orange/Red 1 27uH Inductor L1 1 1N4001 Diode D1 Observe polarity 1 Green LED PWR Observe polarity 1 LM2940T-5.0 VReg IC U1 2 3-Pin Vertical Header J5, J6 2 Jumper Shunt J5, J6 Assy See Text for shunt installation 2 1/8" Phone Jack J2, J3 1 4-Pos DIP Switch SW 1 2.1mm DC Jack J1 1 2.1mm DC Plug J1 Assy 1 SMA-RP Connector N/A Antenna RF connector 1 AWM680RX RF Module 8 2-56 x 1/8" Screws Cover Assy 4 2-56 x 7/16" Spacers Cover Assy Female-Female, Top Cover 4 2-56 x 3/16" Spacers Cover Assy Male-Female, Bottom cover 4 Rubber Feet Cover Assy 1 Printed Circuit Board Set PCB 3-piece set (Top/Main/Bottom) RECOMMENDED ACCESSORIES (available from www.dpcav.com) 5.8GHz 8dBi Patch Antenna, #HG5808P-SMA and Coax Cable #CSR400 or #CSR316. 5.8GHz 5dBi Patch Antenna, #AWM5.8ANT 5.8GHz 4dBi Dipole Antenna, #ANTDRP-5.8. 5.8GHz 2dBi Dipole Antenna, #ANTTRP-5.8. 5.8GHz 8dBi Log Periodic Antenna, #HG2458-08LPNF (requires #SMA-NM1 and #SMA-015) 3.5mm to RCA A/V Cable, #RSA-002.

Figure 2 Caps, Resistors, and Inductors. The photo below (Figure 1) shows what is included in the kit: These instructions are for the Rev-B hardware release. Before starting, be sure to confirm your kit is identified as Rev-B. ASSEMBLY INSTRUCTIONS 1 CAPACITORS, RESISTORS, AND INDUCTORS: See Figure 2. 9 1.1 Install C3, C5, C11, and C12 (.1uF caps). 9 1.2 Install C1, C2, C7, and C9 (47uF caps). 9 1.3 Install C4, C6, C8, C10 (470uF caps). 9 1.4 Install R5 and R6 (2.2 ohm resistors). 9 1.5 Install R4 (220 ohm resistors). 9 1.6 Install R1, R2, and R3 (3.3K ohm resistors). 9 1.7 Install L1 (27uH Inductor).

Jacks. Figure 4, Add the Semiconductors. Figure 5, RF Module Installed 2 SWITCHES AND JACKS: See Figure 3. 9 2.1 Install J1 (DC power jack). 9 2.2 Install SW1 (DIP switch). 9 2.3 Install J2 and J3 (1/8" phone jacks). 9 2.4 Install J5 and J6 (3-pin headers). 3 SEMICONDUCTORS: See Figure 4. 9 3.1 Install D1 (1N4000 diode). 9 3.2 Install U1 (LM2940T-5.0 voltage regulator IC). Solder its three legs AND heavy metal tab to the circuit board. Note: The metal tab must be soldered to the PCB. As an alternative, it can be mounted with heat sink grease and 4-40 machine screw (not included). 9 3.3 Install PWR (LED) with the anode (long lead) in the square pad. The LED must be mounted elevated so that it pokes through the hole in the top cover. We recommend that you solder the LED after the top cover is installed. 4 RF MODULE INSTALLATION: See Figure 5. 9 4.1 Install the AWM680RX module. The pin side will be slightly raised above the PCB and the RF input end must be mounted flush. If the module does not sit correctly on the PCB, per Figure-5, then it may be necessary to file its metal mounting tabs Note: The SMA-RP connector is shown in the photo for reference only. Do NOT install it at this time.

Figure 7, SMA Modification 5 SMA-RP / ANTENNA INSTALLATION: See Figures 6, 7, and 8. 9 5.1 The AWM680RX module’s antenna input port is shown in Figure 6 (see red arrow). The RF ground is the gold colored PCB trace that is found on both sides of the input (see green dots). If you will be using Wi-Fi style antennas, then go to step 5.2. If you will be using our economy PCB patch antenna (#AWM5.8- ANT), then go to step 5.4. 9 5.2 The provided SMA-RP connector is compatible with many consumer Wi-Fi style antennas. But it must be modified before installation. As seen in figure 7, cut off the ground leg that is on the top left side. This is needed to prevent shorts to the module’s nearby circuitry (on some modules there is a tiny SMD component hidden there). Also, the SMA-RP’s center post needs to be shortened a small amount so that it does not short out to the metal case, as shown. Note: The four green dots in Figure 6 indicate the connector’s ground pin alignment area. It is important to accurately align the SMA-RP’s center post conductor over the top side of the module’s RF input trace. Important: When sliding the SMA-RP onto the assembly, please use care so that you do not disturb the tiny SMD component that is on the RF input (of some modules). 5.3 Carefully solder the three ground legs and the center post, as shown in Figure 7. Ensure the module’s metal enclosure is not shorted to the center post conductor. Clean off ALL flux, even if no-clean solder was used. Perform a visual inspection (do NOT use an ohmmeter).

Figure 9, Covers Installed 9 5.4 Do not use the SMA-RP connector when installing dpcav.com’s #AWM5.8ANT economy patch antenna (available separately). Instead, directly solder the coax to the RF port. See Figure 8. Warning: While soldering, do not disturb the tiny SMD component installed on the input pad of some RF modules. Ensure the coax braid is not shorted to the center coax conductor on the module’s RF input. Perform a visual inspection (do NOT use an ohmmeter). 6 COVER INSTALLATION: See Figure 9. 9 6.1 Using the 2-56 screws, install the four female-female standoffs to the top cover. 9 6.2 Place the top cover over the main PCB and attach using the four male-female standoffs. The LED should protrude through the hole in the top cover. If the LED has not been soldered, then now is the time to do that. 9 6.3 Attach the bottom cover using the 2-56 screws. 9 6.4 Apply the four rubber feet to the bottom cover.

Config. 7 FREQUENCY AND AUDIO CONFIGURATION: See Figure 10. 9 7.1 The DIP switch is used to change the received frequency. The transmitter and receiver must both be on the same RF channel. The three switches are set as follows: CH MHz SW1 SW2 SW3 1 5740 ON ON ON 2 5760 ON ON OFF 3 5780 ON OFF ON 4 5800 ON OFF OFF 5 5820 OFF ON ON 6 5840 OFF ON OFF 7 5860 OFF OFF ON ON = Switch closed (Down position) OFF = Switch open (Up position). Note: The forth DIP Switch (SW4) is NOT used and should be ignored.

9 7.2 The two audio channels are identified as Left (L) and Right (R). Two plug-in shunts are used to select which audio channels will appear on the AV-1 and AV-2 jacks. The top cover is labeled to help you configure the audio. For example, in the diagram below the audio has been set so that AV-1 uses the left audio channel and AV-2 uses the right audio channel. Your settings will depend on how your preferences and application. AUDIO CONFIG 1 2 L R Note: The black areas represent the placement of the configuration shunts for the example described above. 8 DC POWER AND AUDIO/VIDEO JACK WIRING: See Figures 11 and 12. 9 8.1 The DC input connector is center positive. Using the provided 2.1mm DC plug, create a cable to connect to your battery supply (6.5VDC to 14VDC). Traditional AC mains operated DC wall “wart” supplies are not recommended because they are rarely regulated or filtered. If AC mains operation is needed then consult with the wall adapter supplier to ensure it is a voltage regulated design. 9 8.2 There are two audio/video outputs (AV-1 and AV-2). They use a traditional 1/8" (3.5mm) 3-conductor miniature phone plug (available separately). The pin-out is shown in Figure 12. Note: A slight decrease in video brightness may occur if both A/V jacks are used. If the brightness is affected too much then it will be necessary to use only one A/V jack and an external video amplifier such as our #PLV2-001.

A/V RF system. As such, no liability may be assumed, nor will any liability be accepted, for any damages resulting from the use of this product. Under no circumstances will the buyer be entitled to consequential or incidental damages. By act of using it, the buyer accepts all resulting liability. 9 AIRFLOW REQUIREMENT 9 9.1 Airflow to the internal components is required to ensure adequate cooling. Do not block the airflow. 10 TECHNICAL INFORMATION For complete technical information, please consult the AWM680RX data sheet (available from dpcav.com’s web site) and the attached schematic.

AV680RX B Title: Size: Date: Revision: Sheet of Letter DPC A/V AUDIO VIDEO www.dpcav.com Copyright: JAN-29-2008 2008 + C8 470uF/10V + C9 47uF 1 5 2 J3 1/8" PHONE PWR GRN + C1 47uF + C2 47uF GND 14VDC MAX IN 1 OUT 3 GND 2 U1 LM2940T-5.0 D1 1N4001 L1 27uH + C10 470uF/10V VCC 1 2 3 J1 PWR TP1 TP AIRWAVE AWM680 RX + C7 47uF 1 5 2 J2 1/8" PHONE + C6 470uF/10V VCC +5F C5 .1uF C3 .1uF R4 220 GND 12 N/A 8 SW2 9 AUD-L 4 SW1 10 SW0 11 AUD-R 3 VID 5 GND 13 GND 15 ANT 14 VCC 6 BYPASS 7 RSSI 2 GND 1 RF-MODULE1 AWM680RX 1 2 3 4 J4 HDR4P 1 2 3 4 8 7 6 5 SW1 SW DIP-4 1 2 3 J6 HDR3P 1 2 3 J5 HDR3P RSSI +5F + C4 470uF/10V AUDR AUDL VID R3 3.3K R2 3.3K R1 3.3K+5F VCC R5 2.2 R6 2.2 EXP C11 .1uF C12 .1uF 6.5VDC MIN