PERFORMANCE TESTS
FLATNESS TEST 4-10.
A power meter and sensor are used to verify the high level flatness of the instrument.
REQUIREMENT:
Amplifier flatness is:
< ± 1 dB at +10 dBm over the frequency range of 0.5 to 1024 MHz.
TEST EQUIPMENT:
• Power meter
• Power sensor (high level)
REMARKS:
If the UUT fails this test, calibration (see Section 3) or repair (see Section 6) is
necessary. If no power-on status codes are present, likely problem areas needing repair
include the A8 Output PCA, the A21 Attenuator PCA, or the A7 Relay Driver PCA.
PROCEDURE:
1. Calibrate and zero the power meter.
2. Connect the power sensor to the instrument RF Output.
3. Program the instrument to SPCL 909 and then to 0.5 MHz and + 10 dBm.
4. The power meter should read + 10 ±1 dBm.
5. Repeat step 4 for the following frequencies:
a. 0.5 to 2.0 MHz in 0.1 MHz steps
b. 2.0 to 20.0 MHz in 1.0 MHz steps
c. 20.0 to 200.0 MHz in 10.0 MHz steps
d. 200.0 to 1024.0 MHz in 20.0 MHz steps
4-13
To Next Page
Loading...
