TB 9-6625-2288-35
Table 3. Range Accuracy and Linearity - Continued
RANGE-FULL-
Test instrument meter
SCALE VOLTS
indications
Calibrator indications
scale settings
(V)
Min
Max
.1
.03
25.0
mV
35.0
mV
.06
55.0
mV
65.0
mV
.1
95.0
mV
105.0
mV
.3
.1
85.0
mV
115.0
mV
.2
185.0
mV
215.0
mV
.3
.285 V
.315 V
1
.3
.250 V
.350 V
.6
.550 V
.650 V
1
.950 V
1.05
V
3
1
.850 V
1.15
V
2
1.95 V
2.15
V
3
2.85 V
3.15
V
b. Adjustments
(1) Set TI RANGE-FULL-SCALE switch to .001-VOLTS.
(2) Short TI RF probe to chassis and adjust SET REF control until meter pointer is
at SET REF mark.
NOTE
Operate calibrator in wideband operation.
(3) Connect TI RF probe to calibrator WIDEBAND OUTPUT.
(4) Adjust calibrator for .001 V ac output. Adjust 1MV HI (fig. 1) for a meter
indication between .0009 and .0011 mV (ideal .001) (R).
(5) Adjust calibrator for .0006 V ac output. Adjust 1MV MID (fig. 1) for a meter
indication between .0005 and .0007 V ac (ideal .0006) (R).
(6) Adjust calibrator for .0003 V ac output. Adjust 1MV LO (fig. 1) for a meter
indication between .0002 and .0004 V ac (ideal .0003) (R).
(7) Repeat (4) through (6) above until no further adjustments are required.
(8) Disconnect TI RF probe from calibrator output.
(9) Set TI RANGE-FULL-SCALE switch to .003-VOLTS.
(10) Short TI RF probe to chassis and adjust SET REF control until meter pointer is
at SET REF mark.
(11) Connect TI RF probe to calibrator WIDEBAND OUTPUT.
(12) Adjust calibrator for .003 V ac output. Adjust 3MV HI (fig. 1) for a meter
indication between .00285 and .00315 V ac (ideal .003) (R).
(13) Adjust calibrator for .002 V ac output. Adjust 3MV MID (fig. 1) for a meter
indication between .00185 and .00215 V ac (ideal .002) (R).
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