Tektronix 1740A/1750A - Manual (Page 76)

Using the Menus
1740A/1750A Series Waveform/Vector Monitor User Manual
3-21
OFFSET
H The
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 ).
H While 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.
H When
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.
H When 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.
H An offset will remain in effect until the user turns
the offset OFF. (Exiting the CONFIG menu will not
affect the OFFSET ON / OFF setting.)
CALIBRATE
These choices are offered when CALIBRATE is selected:
H CAL SIG
—
Turns the 1 V internal calibrator signal
on/off.
H GAIN CAL
—
Turns on the gain calibration adjust-
ment on/off.