Tektronix 1740A/1750A Manuale Utente Scaricare il pdf (Pagina 98)

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.

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Tektronix 1740A/1750A Manuale Utente Pagina 98