VXI 3002 - Manual (Page 80)

5-5
Attenuator accuracy
Test procedure
UUT
C2559
RF
RF
OUT
Frequency offset
mode connection
LO
RF OUTPUT
Signal generator
Sensor
Measuring
receiver
Down converter
Fig. 5-2 RF output test set-up
(1) Connect the test equipment as shown in Fig. 5-2.
(2) On the UUT set:
Carr freq 2.6 MHz
RF Level −4 dBm
Set ∆ 11 ENTER
(3) Tune the receiver to 2.6 MHz and record the output level measured in Table 5-9 checking
that the result is within specification.
(4) Set the UUT RF level to −4.1 dBm. Measure the received level and record the result in
Table 5-9, checking that the result is within specification.
(5) Decrement the UUT, using the ß icon, in 11 dB steps down to an RF level of −103.1 dBm
measuring the received level at each step shown in Table 5-9 checking that the results are
within specification.
(6) Set the UUT to carrier frequency 480.1 MHz and repeat (2) to (5) using Table 5-10.
(7) Set the UUT to carrier frequency 1199 MHz and repeat (2) to (5) using Table 5-11.
The down converter will automatically be enabled when testing frequencies above
1300 MHz.
(8) Set the local oscillator to +8 dBm at a carrier frequency of 62 MHz less than the test
frequency (i.e. 1813.1 MHz).
(9) On the receiver, enter the local oscillator frequency followed by the test frequency.
(10) Set the UUT to carrier frequency 1875.1 MHz and repeat (2) to (5) using Table 5-12.
(11) Set the UUT to carrier frequency 2399 MHz and repeat (2) to (5) using Table 5-13.