AVAIR AV-201 Instruction

control instruments. the measured values can be easily read in the large scale instruments. The AV-201 and AV-601 or is an insertion type RF wattmeter and can be permanently fitted into a transmission System for continuous monitoring of station working condition . The unit can be work without external power supply . but with 13.8DC power which permits to light up the Meter and shows the active led corresponding to the selected RF coaxial line ( for AV-601 ) DESCRIPTION OF CONTROL 1 POWER/SWR reading meter 14 led sensor 1 2 Indicator adjustment 15 led sensor 2 (BANK2 ,BANK3 ,BANK4) 3 Power range switch 16 sensor1/sensor2 switch 4 Function switch 5 FWD /REFLECT POWER/OFF SWITCH REMARK :FIG1/FIG2 FOR AV-200/AV-400/AV-201 6 SWR calibration potential-meter :FIG3/FIG4 FOR AV-601 7 Average pep to pep switch 8 200W/1KW select switch 9-12 Antenna connector(connect to the antenna with 50 ohm coaxial cable) 10-13 TX connector (connect to the radio with 50 ohm coaxial cable) 11 Power jack (13.8VDC) light up the meter and sensor 1 / sensor 2 led FIG1 FIG2 1 7 6 9 10 8 11 2 3 4 5 1 15 14 7 6 12 16 9 8 2 3 4 5 13 11 10 FIG3 FIG4

The cable coming from the transmitter or from the linear amplifier to the connector marked “TX” AV-201/or AV-601 is ready to operate. POWER MEASUREMENTS 1 Select the RANGE (3) switch on the end-scale position value as to the power of the unit 2 Select the FUNCTION (4) switch in the power position 3 Select the POWER switch the FWD position to measure the direct power(from the radio to antenna) or REF position to measure the reflected power(from antenna to the radio) 4 Select the power value can be read on the corresponding scale. SWR MEASUREMENTS 1 Select the RANGE (3) switch on the end-scale position value as to the power of the unit. 2 Select the FUNCTION (4) switch in the CAL position . 3 Let the radio transmit and adjust the instrument by turning the CAL knob, position the end-scale index in the CAL position. 4 Select the FUNCTION (4) switch in the SWR position 5 Read the SWR value in the above scale. FIG5 (FOR AV-201) FIG6 (FOR AV-601 ) TO ANT TO RADIO TO ANT TO RADIO TO RADIO TO ANT (1.8-160MHZ)OR(140-525 MHZ) (1.8-160MHZ) AV-601 (140-525 MHZ) REMARK: SWR VS. REFLECT POWER Pfwd + Prev SWR 1.0 1.1 1.2 1.5 2.0 2.5 3.0 SWR (STANDING WAVE RATIO)= Pfwd - Prev Prev% 0 0.22 0.8 4 11.1 8.4 25.0 SPECIFICATION FREQUENCE RANGE: ………...1.8~160 MHZ(AV-201,AV-601 ,) , 140~525 MHZ (AV-401,AV-601) POWER MEASURE RANGE :….0.5~1KW(5W/20W/200W/1KW ) FOR AV-201 AND AV-601 HF BAND 1KW input condition (1KW 10 SECONDS ON 50 SECONDS OFF) if continuous 1KW input will burn the sensor . POWER MEASURE RANGE :….0.5~400W(5W/20W/200W ) FOR AV-601 UHF BAND 400W input condition (400W 25 SECONDS ON 35 SECONDS OFF) if continuous 400W input will burn the sensor . MINIMUN POWER INPUT :.…..0.5W Maximum continuous input 200W PRECISION………………………5W RANGE ±5% , 20W RANGE ±7.5% , 200W RANGE ±10% , 400W RANGE ±12.5% 1KW RANGE ±15% SWR:……………………..………. 1~INFINITY IMPDANCE:……………………...50ohm INPUT LOSS:……………………..0.2db (1.8~160 MHZ) , (140~525MHZ) , 0.3db(430-1300MHZ) DEMISION:…………………….…15X6.5X10CM WEIGHT:……………………….…720gr.(AV-601) , 630gr.(AV-201)