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1740A/1750A Series Waveform/Vector Monitor User Manual 4-17
Calibration
Instrument gain may require readjustment for special moni-
toring applications. To prevent erroneous measurements,
gain should be adjusted only by qualified personnel. Normal
instrument calibration, performance verification, and service
maintenance are covered in the service manual, which will
be published as a separate volume.
Adjusting Instrument Gain
Instrument gain can be adjusted through the CONFIG—CALI-
BRATE
menu. CONFIG menu is described on page 3-18.
Set Vertical
Gain
1. To adjust vertical gain, select
WAVEFORM display
mode and push the
CONFIG menu button. Select
CALIBRATE, then CAL SIG ON and GAIN CAL ON.
a. Turn the VERT CAL control until the calibra-
tor signal (or applied reference signal)
amplitude is 140.0 IRE (1000 mV for PAL),
as read on the graticule.
b. Pushing
RESET VCAL will cancel any gain
adjustment and reinstate the factory gain
setting.