Ametek 7230 Instruction Manual page 76

Chapter 5, WEB CONTROL PANEL OPERATION
5-34
Magnitude% (2.5V fs)
In this setting the corresponding DAC connector on the rear panel of the
instrument outputs a voltage related to the MAG1%fs display as follows:-
MAG%fs
+300
+100
0
Phase (+9 V = +180°)
In this setting the corresponding DAC connector on the rear panel of the
instrument outputs a voltage related to the Phase 1 display as follows:-
PHA deg
+180
+90
0
-90
-180
Noise (2.5V fs)
When set to Noise the corresponding DAC connector on the rear panel of the
instrument outputs a voltage related to the Noise%fs display as follows:-
Noise%fs
+300
+100
0
NOTE: When Noise is selected as an output, the noise measurement mode
(Main Controls panel) must be ON.
Ratio (10.X%/ADC1)
When set to Ratio the corresponding DAC connector on the rear panel of the
instrument outputs a voltage related to the result of the Ratio calculation, which
is defined as follows:-


10 X output
 
RATIO

ADC1 Input
where X output is the X channel output as a percentage of the full-scale
sensitivity and ADC 1 is the voltage (expressed in volts) applied to the ADC 1
input connector on the rear panel of the instrument. Hence, for example, if the
instrument were measuring a 100 mV signal when set to the 500 mV sensitivity
setting, the X channel output were maximized and a 1 V signal were applied to
the ADC1 input, then the value of RATIO would be:-

0.1

10

0.5
 
RATIO
 1.000


RATIO 2
The relationship between the voltage at the DAC connector and the RATIO
value is defined as follows:-
DAC Voltage
7.5 V
2.5 V
0.0 V
DAC Voltage
9.0 V
4.5 V
0.0 V
-4.5 V
-9.0 V
DAC Voltage
7.5 V
2.5 V
0.0 V







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