Performance Check/Calibration—Type 422 AC-DC
Standard
amplitude
calibrator
Square-wave
generator
Low-frequency
constant-amplitude
sine-wave
generator
High-frequency
constant-amplitude
sine-wave generator
s®— —e-‘9*
42-inch
BNC cable
Dual-input
coupler
Three-inch
screwdriver
GR to BNC
adapter
Tuning
tool
Low-capacitance
screwdriver
BNC to dual
binding post
adapter
Fig. 5-14. Test equipment required for steps 16 through 32.
Partial Procedure
If beginning a partial procedure with this step, set the
controls as given under Preliminary Control Settings except
as follows:
CH 2 Input Coupling GND
TIME/DIV ,5 ms
16. Check/Adjust Channel 1 and 2 Gain
a. Test equipment required for steps 16 through 32 is
shown in Fig. 5-14.
b. Connect the standard amplitude calibrator
(067-0502-00) output connector to the INPUT 1 and
INPUT 2 connectors through a 42-inch BNC cable and the
dual-input coupler.
c. Set the standard amplitude calibrator for a 0.2-volt
square-wave output.
d. Position the display to the center of the graticule
with the Channel 1 POSITION control.
e. CHECK—CRT display for four divisions ±0.12 divi
sion of deflection (within 3%).
PERFORMANCE CHECK ONLY
Front-panel adjustment; can be adjusted as part of
performance check.
f. ADJUST—Channel 1 GAIN adjustment R80 (see Fig.
5-15) for exactly four divisions of deflection.
5-18
Fig. 5-15. Location of gain adjustments.
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