Step 18. When menu C3 returns, select TEST SIGNALS to
bring up menu SU2 (left).
Step 19. Menu SU2 lets you define the power level of the sig-
nals at the two test ports. Power delivered to the
DUT by the test set must be such that the measured
signals are well above the noise floor but below the
0.1 dB compression level of the Test Set samplers.
(Noise floor and maximum signal into Port 2 levels
are specified in Appendix C.)
For measuring high power signals, a Port 2 attenu-
ator in the forward transmission path allows up to
1 Watt of power (30 dBm) before 0.1 dB compression
occurs.
Determine the required input power level and the
expected output RF power level from the DUT.
Ideally, the Port 2 step attenuator should be set so
that the input to the test sampler (left) is less than
–10 dBm. For example, if the input to the DUT is set
for –20 dBm and the device gain is 40 dB, set the
PORT 2 ATTN menu option for 20 dB.
(If you needed to calibrate the test port for power
flatness, you would move the cursor to FLATNESS
CORRECTION and press the Enter key.)
Finally, move the cursor to PREVIOUS MENU and
press the Enter key. This returns you to menu SU1.
When you get there, press the Enter key to return to
menu C3.
SOLT CALIBRATION MEASUREMENT CALIBRATION
7-26 37xxxE OM
MENU SU2
TEST SIGNALS
POWER CONTROL
0.0 dB
(0 TO -20)
PORT 1 ATTN
20 dB (0 - 70)
PORT 1 POWER
XX.XX dBm
PORT 2 ATTN
X0 dB (0-40)
CALIBRATE
FOR FLATNESS
(CAL EXISTS)
FLATNESS
CORRECTION
AT XX.X dBm
SOURCE 2 PWR
XX.X dBm
PREVIOUS MENU
PRESS <ENTER>
TO SELECT
TB