TB 9-6625-2250-24
(e) [VIDEO BW] to 1 Hz.
(f) MARKER ON.
(10) Record TI MKR amplitude indication as actual MKR indication for [REF LVL]
0 dBm setting in table 18.
(11) Set attenuator No. 2 to 60 dB.
(12) Press AMPLITUDE key then [REF LVL] to 10 dBm. Record TI MKR
amplitude indication as actual MKR indication for [REF LVL] 10 dBm setting in table 18.
(13) Repeat technique of (12) above for remaining [REF LVL] settings listed in table 18.
(14) Subtract actual attenuation of attenuator No. 2 at 60 dB (correction chart) from
ideal MKR indication for TI [REF LVL] 0 dBm setting recorded in (7) above and record
difference in table 18 as ideal MKR indication for [REF LVL] -10, -40, and -50 dBm
settings in table 18.
(15) Subtract actual MKR indication from ideal MKR indication in each [REF LVL]
row listed in table 18. The difference will be between -3.3 and +3.3 dB.
b. Adjustments. Refer to paragraph 1 a.
21. Power Supply
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
a. Performance Check
(1) Press TI LINE switch to OFF.
WARNING
Allow 30 seconds for the high-voltage capacitors to discharge
before removing the protective cover from the A6 power supply
(located at TI top).
(2) Remove A6 power supply cover.
(3) Set multimeter to measure 1000V dc.
(4) Connect multimeter INPUT HI to A6TP405 (fig. 9) and INPUT LO to
A6TP401 (fig. 9).