Specifications

l Page 6 Kaval Telecom Inc. - Company Secret DCD000000003
• BIAS TEST
This test is performed for each booster PCB. A multimeter is used for all voltage measurements. All measurements
are with respect to chassis ground, so connect multimeter negative lead to any convenient point on metallic housing
using an alligator clip.
Plug test adapter module into 9 pin connector.
Set a laboratory power supply to 24 VDC +/- 0.1 VDC and current limit it to 0.75A.
Connect PSU to banana jacks on test adapter.
Set AGC switch to off position and coarse gain to on position.
Apply power. Verify PSU does not current limit. Verify supply current draw is 600 mA +/- 50 mA
Verify voltage at TP 10 is +24 VDC +/- 0.1V
Verify voltage at TP 14 is +23.85 VDC +/- 0.1V.
Verify voltage at TP18 is 23.5 VDC +/- 0.15 V
Verify voltage at pin 3 of U9 is 12 VDC +/- 0.25 V
Verify Voltage at TP12 is 8 VDC +/- 0.25 V
Verify voltage at TP1 is 4.4 VDC +/- 0.2 V
Verify voltage at TP2 is 5.0 VDC +/- 0.25 V
Verify voltage at TP4 is 5.0 VDC +/- 0.25 V
Verify voltage at TP5 is 2.8 VDC +/- 0.25 V
Verify voltage at TP9 is < 0.3 VDC
Verify voltage at TP15 is < 0.3 VDC
Switch Coarse Gain off.
Verify voltage at TP4 is < 0.3 VDC
Verify voltage at TP5 is < 0.3 VDC
Verify voltage at TP9 is 3.8 VDC +/- 0.25 VDC
Verify voltage at TP8 is 5.5 VDC +/- 0.25 VDC
Verify voltage at TP11 is 8.0 VDC +/- 0.25 V
Verify voltage at TP17 is 5.0 VDC +/- 0.25 VDC
• ALIGNMENT OF FAULT DETECT
Connect a 1W 1 Ohm resistor between TP14 and TP18. This simulates a reduction of power module current by 50%.
Adjust R40 so that fault light on test adapter turns off.
Carefully adjust R40 so that fault light barely turns on.
Remove 1W resistor. Verify fault light goes out.
• RF TEST
• Swept Response
• Overall Gain
Connect unit to scalar network analyzer or spectrum analyzer with tracking generator. Set input level to –50
dBm. Sweep center frequency +/- 100 MHz. Set AGC off, coarse gain off fine gain to maximum. Verify
midband gain is 54 dB +/- 2 dB. See Fig. 1 for sample plot. Note: Plot shows booster at full gain. Shape
should be the same at lower gains.
• Passband
Verify gain within operating passband does not vary from reading in 6.8.2 by more than +/- 1 dB.
Verify rejection at offsets of +/- 100 MHz is at least 35 dB.
• Input Return Loss
Set coarse gain to on. Verify input return loss over operating passband is greater than 10 dB. See Fig. 2 for
sample plot.
• Single Tone Tests
• Saturated Power
Apply a single tone at input at a level of –30 dBm at the center of the application operating band. Verify
output power is at least +30 dBm.
• Coarse Gain Adjustment
Set coarse gain off. With input signal at a level of –50 dBm, measure output level. Set coarse gain on.
Adjust R21 to obtain an output level of 16 dB +/- 0.25 dB higher than reading obtained with coarse gain off.
• Maximum Gain
Calculate difference between output level and – 50 dBm. This is the maximum gain. Verify this to be +70
dB +/- 2 dB.