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Figure 6. Frequency response - equipment setup.
Figure 7. Boonton, Model 92C

Calibration Procedure For Rf Millivoltmeter Me-526/Usm (Model 92Bd With Serial Number 2890 And Below) And Models 92B, 92Bd With Serial Number 2891 And Avobe, And 92C Page Navigation
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TB 9-6625-2074-24
(22) Reverse the output ports connections of the power splitter.
(23) Repeat technique of (19) through (20) above and record TI indication under TI
indications No. 2 column in table 15.
NOTE
Refer to table 15 for (24) below.
(24) Add TI indications No. 1 value to TI indication No. 2 value and divide the sum
by two. Record results in TI indications average column. Results recorded in TI indications
average column will be within the limits specified in the minimum-maximum columns of
table 15.
(25) Repeat (24) above for each row listed in table 15.
b. Adjustments
(1) Adjust calibrator controls for an output of 3.0 V ac and adjust R208 (fig. 7) for a
TI indication between 2.88 and 3.12 mV (ideal 3.0 mV) (R).
(2) Adjust calibrator controls for an output of 10.0 V ac and adjust R220 (fig. 7) for a
TI indication between 9.6 and 10.4 mV (ideal 10.0 mV) (R).
(3) Adjust calibrator controls for an output of 30.0 mV ac and adjust R228 (fig. 7) for
a TI indication between 28.8 and 31.2 mV (ideal 30 mV) (R).
(4) Adjust calibrator controls for an output of 100 mV ac and adjust R236 (fig. 7) for
a TI indication between 96 and 104 mV (ideal 100 mV) (R).
(5) Adjust calibrator controls for an output of 0.3 V ac and adjust R255 (fig. 7) for a
TI indication between 291 and 309 mV (ideal 300 mV) (R).
(6) Adjust calibrator controls for an output of 1.0 V ac and adjust R268 (fig. 7) for a
TI indication between 970 and 1030 mV (ideal 1000 mV) (R).
(7) Adjust calibrator controls for an output of 3.0 V ac and adjust R281 (fig. 7) for a
TI indication between 291 0 and 3090 mV (ideal 3000 mV) (R).
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