TB 9-6625-2333-24
(27) Press TI keys and enter values using DATA keys as listed in (a) through (d) below:
FREQUENCY then [CENTER FREQ] to 2.9 GHz.
(a)
AMPLITUDE then [REF LVL] to -10 dBm.
(b)
AMPLITUDE then [ATTEN] to 10 dB.
(c)
MARKER MKR [MARKERS OFF].
(d)
(29) Press TI MARKER MKR key.
(30) Adjust synthesized signal generator level output for a TI MKR indication
between -12.95 and -13.05 dBm.
(31) Press TI keys and enter values using DATA keys as listed in (a) through
(c) below:
(a) MARKER MKR.
(b) [MARKER DELTA].
(c) AMPLITUDE then [ATTEN] to 20 dB.
(32) Wait for completion of sweep. Record ' MKR indication for TI ATTEN 20 dB
setting in table 9.
(33) Repeat technique of (31)(c) and (32) above for remaining TI ATTEN settings
listed in table 9.
(34) Subtract IF GAIN CORRECTION from ' MKR indication and record results
as corrected ' MKR indication for each ATTEN setting listed in table 9. The corrected '
MKR indications will be within limits specified for each setting.
(35) The step-to-step accuracy for TI ATTEN 20 dB setting is equal to the ATTEN
20 dB setting corrected ' MKR indication recorded in table 9. The corrected ' MKR
indication will be between -0.6 and +0.6 dB.
(36) Calculate the step-to-step accuracy for TI ATTEN 30, 40, 50, 60 and 70 dB
settings by subtracting previous ATTEN setting corrected ' MKR indication recorded in
Difference will be between -0.6 and +0.6 dB for each setting.
EXAMPLE:
(Current)
(Previous)
30 dB step-to-step
TI ATTEN 20 dB
TI ATTEN 30 dB
corrected ' MKR indication
corrected ' MKR indication
accuracy
=
12. IF Gain Uncertainty
a. Performance Check
(1) Connect equipment as shown in figure 3.
