IBM 7220 Instruction Manual page 47

Dsp lock-in amplifier
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MAG %fs CH1/2 Voltage
+120
12.0 V
+100
10.0 V
0
0.0 V
-100
-10.0 V
-120
-12.0 V
PHASE1
When set to PHASE1 the corresponding rear panel CH1/CH2 connector will
output a voltage related to the PHA deg front panel display as follows:-
PHA deg
CH1/2 Voltage
+180
9.0 V
+90
4.5 V
0
0.0 V
-90
-4.5 V
-180
-9.0 V
PHASE2
When set to PHASE2 the corresponding rear panel CH1/CH2 connector will
output a voltage related to the PHA deg front panel display as follows:-
PHA deg
CH1/2 Voltage
+360
+9.0 V
+180
0.0 V
0
-9.0 V
NOISE
When set to NOISE the corresponding rear panel CH1/CH2 connector will
output a voltage related to the N %fs front panel display as follows:-
N %fs
CH1/2 Voltage
+120
12.0 V
+100
10.0 V
0
0.0 V
-100
-10.0 V
-120
-12.0 V
RATIO
When set to RATIO the corresponding rear panel CH1/CH2 connector will
output a voltage related to the RATIO front panel display as follows:-
RATIO
CH1/2 Voltage
+12
12.0 V
+10
10.0 V
0
0.0 V
-10
-10.0 V
-12
-12.0 V
Chapter 5, FRONT PANEL OPERATION
5-7

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