Tektronix 1740A/1750A OFFSET, CALIBRATE, The, and, When both, While the offsets are enabled, the, These choices are offered when CALIBRATE is selected:

Using the Menus

OFFSET

HThe VERTICAL POSITION control normally positions all channels together. When OFFSET is enabled, the bezel controls can be used to offset input channels 2 (A or B) and 3 (A or B) with respect to channel 1 (A or B).

HWhile the offsets are enabled, the VERTICAL POSI- TION control will still position all channels together, with the offset amount remaining constant. When OFFSET is turned off, the input channels will be re-aligned. The selected offset amount will be recalled the next time OFFSET is enabled.

HWhen A2A3 OFFSET is on, the center and right bezel controls are assigned to CH A2 and CH A3 offsets. On-screen labels appear just above each control. Turning these controls will offset the CH A2 and CH A3 signals with respect to CH A1. When B2B3 offset is on, the same two controls are assigned to CH B2

and CH B3.

HWhen both A2A3 and B2B3 offsets are on, the user assigns the controls to either A or B offsets. The CONTROL selection only appears when both A and B OFFSETS are selected.

HAn offset will remain in effect until the user turns the offset OFF. (Exiting the CONFIG menu will not affect the OFFSET ON / OFF setting.)

CALIBRATEThese choices are offered when CALIBRATE is selected:HCAL SIG — Turns the 1 V internal calibrator signal on/off.HGAIN CAL — Turns on the gain calibration adjust- ment on/off.

1740A/1750A Series Waveform/Vector Monitor User Manual 3-21