IBM 7220 Instruction Manual page 46

Dsp lock-in amplifier
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Chapter 5, FRONT PANEL OPERATION
5-6
OFF
Output expansion is turned off.
X ONLY
A ×10 output expansion is applied to the X output only.
Y ONLY
A ×10 output expansion is applied to the Y output only.
X & Y
A ×10 output expansion is applied to both the X and Y outputs.
CH1
OUTPUTS
CH2
This control, shown on the right-hand LCD, allows the two rear panel analog outputs
CH1 and CH2 to be connected to the required instrument outputs. The left-hand
ADJUST keys are used to select the output provided at the CH1 connector and the
right-hand ones select that at the CH2 connector. Each output may be set to one of
the following settings:-
X %
When set to X % the corresponding rear panel CH1/CH2 connector will output a
voltage related to the X %fs front panel display as follows:-
X %fs
CH1/2 Voltage
+120
12.0 V
+100
10.0 V
0
0.0 V
-100
-10.0 V
-120
-12.0 V
Y %
When set to Y % the corresponding rear panel CH1/CH2 connector will output a
voltage related to the Y %fs front panel display as follows:-
Y %fs
CH1/2 Voltage
+120
12.0 V
+100
10.0 V
0
0.0 V
-100
-10.0 V
-120
-12.0 V
MAG %
When set to MAG % the corresponding rear panel CH1/CH2 connector will
output a voltage related to the MAG %fs front panel display as follows:-

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