Agilent Technologies E8285A Manual page 150

Performance Tests
RF Generator FM Accuracy Performance Test 2
Procedure
NOTE Test Sets with firmware revision A.04.5X and above operate only at RF
frequencies from 800 to 1000 MHz and 1700 to 2000 MHz. A text only error
message "Input value out of range" , will be displayed if invalid
frequencies are set.
Steps 1, 2, and 3 in the following procedure apply to both of the setups (shown in
figure 6-3
1. On the measuring receiver:
2. On the Test Set:
3. For frequencies up to 1000 MHz measure the FM deviation at the RF
4. On the signal generator:
150
and figure 6-4 on page
a. Reset the instrument.
b. Set the high-pass filter to 300 Hz.
c. Set the low-pass filter to 3 kHz.
d. Set the measurement mode to FM.
e. Set the FM de-emphasis off.
f. If the microwave converter is being used, set the frequency offset mode to
exit the mode (27.0 Special).
a. Press .
Preset
b. Select the CONFIGURE screen.
c. Set the RF Display field to Freq.
d. Set the RF Offset to Off.
e. Set the Output Port field to Dupl.
f. Select the RF GENERATOR screen.
g. Set the RF Gen Freq field to the appropriate RF frequency (based on the
firmware revision; see NOTE above) from the Performance Test Record.
h. Set the Amplitude to -10 dBm.
i. Set the AFGen1 To field to FM at 99 kHz deviation.
frequencies and deviations shown in the Performance Test Record (PTR) and
compare the measured deviation to the limits.
The following steps are for measurements to 2 GHz.
a. Set the frequency to 1500 MHz CW.
b. Set the level to +8 dBm or whatever level is suitable for the microwave
converter's LO input.
149).
S:\agilent\e8285\ALR\Book\chapters\perf_test.fm