TB 9-6625-2185-24
NOTE
If correction is changed more than 20 counts perform (32)
through (44) above.
(51) Set control board bit switch to OPERATE MODE (fig. 3). If display does not
indicate between +9.92 to +10.08 dBm, repeat (47) through (51) until no further
adjustment is necessary.
(52) Repeat technique of (32) through (44) above for a power level of +7 dBm in (33)
and range 6 in place of range 5 for all steps concerned.
(53) Repeat technique of (32) through (38) above for a power level of +3 dBm in (33)
and range 6 for all steps concerned. If (38) above is within tolerance, adjustments are
complete, if not perform (54) below.
(54) Repeat technique of (47) through (51) for range 6 until display indicates 0.12
dBm of values recorded in (36) above.
10. Dc Instrumentation Accuracy
NOTE
Do not perform the following paragraph if paragraph 9, Basic
Instrument Accuracy, was within specifications.
a. Performance Check
(1) With TI LINE power OFF, remove sensor from interconnect cable and connect
calibration adapter to interconnect cable.
(2) Set multimeter to measure resistance and connect to banana plugs on
calibration adapter.
(3) Record resistance value indicated on multimeter (resolution two decimal places)
as Ra (approximately 998 :).
(4) Using following formula, solve for Rd.
Rd - (Ra X 1000) - Ra
2
Where:
Rd - Resistance value for dividers (approximately 498 k)
(5) Set calibrator to OPR at 0 V dc output.
equipment as shown in figure 4.
(7) Set TI LINE power switch to ON.
