TB 9-6625-2074-24
17. Equipment Setup
a. Connect RF probe to PROBE jack.
b. The RF probe authorized for use with TI must have serial numbers matching the TI
serial numbers. If a new probe is calibrated with TI, annotate new probe with TI serial
number. Do not use any probe not calibrated with TI.
c. Remove TI protective cover as required for adjustment.
d. Connect TI to a 115 V ac source.
e. Energize TI and allow 1 hour for warm-up.
18. RF Millivoltmeter Accuracy
a. Performance Check
(1) Connect ac divider input to calibrator OUTPUT V: A HI and LO terminals.
(2) Set TI pushbuttons as listed in the first row of table 12 and adjust ZERO control
for zero indication on TI meter.
(3) Connect TI probe to ac divider output.
(4) Adjust calibrator controls for 10 kHz and a full-scale indication on TI. If
calibrator does not indicate within limits specified, perform corresponding TI adjustments.
(5) Disconnect TI probe from ac divider.
(6) Repeat technique of (2) through (5) above for remaining TI pushbutton settings
in table 12.
Table 12. Accuracy
Calibrator output
TI
TI pushbutton
(Vac)
indication
TI adjustment
setting
(mV)
Min
Nominal
Max
b(1)
3 mV
2.88
3
3.12
3
b(2)
10 mV
9.6
10
10.4
10
(7) Disconnect TI probe and calibrator from ac divider.
(8) Connect TI probe to calibrator OUTPUT V:A HI and LO terminals.
(9) Set TI pushbuttons as listed in the first row of table 13.
(10) Adjust calibrator controls for 10 kHz and a full-scale indication on TI. If
calibrator does not indicate within limits specified, perform corresponding TI adjustments.