TB 9-6625-2325-35
b. Adjustments
(1) Adjust R101 (fig. 1) until TI indicates one-tenth of value recorded in a(4)
above (R).
(2) Press and release RANGE HOLD/AUTO pushbutton to AUTO and repeat
a(4) through (6) above.
NOTE
Due to the coarseness of adjustments in (3) and (4) below, it
is only necessary to adjust within the tolerance listed.
(3) Adjust R72 (fig. 1) until TI indicates between 2.49 and 2.51 V (R).
(4) Adjust R26 (fig 1.) until TI indicates between .249 and .251 V and repeat a(8)
through (10) above (R).
9. High Frequency
Response
a. Performance Check
(1) Connect calibrator OUTPUT HI and LO to TI INPUT.
(2) Press and release all front panel pushbuttons to out position, except LO
RANGE ENABLE and POWER.
(3) Set calibrator for a 1 mV, 1 kHz output. TI will indicate between 0.98 and
1.02 mV. Record TI indication
(4) Set calibrator for a 10 mV, 1 kHz output. TI will indicate between 9.9 and
10.1 mV. Record TI indication
(5) Set calibrator for a 100 mV, 1 kHz output. TI will indicate between 99.5 and
100.5 mV. Record TI indication
(6) Set calibrator for a 1 V, 1 kHz output. TI will indicate between 0.995 and
1.005 V. Record TI indication
(7) Set calibrator for a 3 V, 1 kHz output. TI will indicate between 2.985 and
3.015 V. Record TI indication
(8) Connect calibrator WIDEBAND to TI INPUT using calibrator wideband
cable and 50Ω feedthrough termination.
(9) Set calibrator for a 1 mV, 1 kHz wideband output.
(10) Adjust calibrator amplitude output adjustment controls until TI indication
equals TI indication recorded in (3) above, then press calibrator NEW REF key.
(11) Set calibrator to 2 MHz and adjust amplitude output adjustment controls
until TI indication equals TI indication recorded in (3) above. If calibrator Error display
indication is not within 4 percent, perform b(1) below.