TB 9-6625-091-35
Table 6. Input Compensation
Test instrument
VOLTS/CM switch settings.
Adjustments
.1
.2
.5
1
2
5
1
10
20
1Adjust
square-wave generator form maximum output.
b. Adjustments.
Adjust C5051 (fig. 1)
for square waves with flat
tops (R).
11. Rise Time
a. Performance Check
(1) Turn Oscilloscope (A2) power switch to off position and remove extension.
(2) Insert TI directly into vertical compartment of oscilloscope and turn power
switch to on position.
(3) Turn TI VOLTS/CM switch to .05.
(4) Connect square-wave generator (A3) fast rise + output to TI INPUT, using cable
and termination supplied with square-wave generator, and if required, adapter (B1).
centimeters of vertical deflection on oscilloscope crt.
(6) Measure rise time, using standard rise-time technique. Rise time will be as
specified in table 1 for the type of oscilloscope used. If rise time is not within limits
specified, perform b below.
b. Adjustments.
Adjust R6541 (fig. 1)
(for S/N
353 and
up) for best rise time
(R).
12. Final Procedure
a. Deenergize and disconnect all equipment and replace protective covers on
oscilloscope.
b. In accordance with TM 38-750, annotate and affix DA Label 80 (US Army
Calibration System). When the TI cannot be adjusted within tolerance, annotate and affix
DA Form 2417 (Unserviceable or Limited Use) tag.
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