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Page 32
Analog Output
The Terranova® 752A has analog output available for use as a secondary method to read the high
voltage and current values shown on the HIGH VOLTAGE and CURRENT display, respectively. The
unit outputs a 0 V to 10 V signal for each type of analog output. Analog output is accessible via
the MISC I/O or AUXILIARY I/O connector for CHANNEL 1 and the AUXILIARY I/O connector for
CHANNEL 2. See
on page 6 and
on page 7 for relay pin configuration.
High Voltage Monitor
The high voltage monitor is based on the value shown on the respective HIGH VOLTAGE display.
The analog output function provides a normalized value (i.e. divided by 1000) of 1 V per 1 kV for
the high voltage output. For example, an output of 7.5 V corresponds to 7.5 kV.
Current Monitor
Three different user-selectable analog output voltage scales – two linear, one logarithmic – are
available to monitor the current value shown on the respective CURRENT display. Default current
monitor scale is linear at 2 mA per 1 V. Although the linear scales can be independently set for
each channel, the logarithmic scale applies to both channels. See
on page 34 to change current monitor scale.
Linear Output
Linear output is available in the following two scales: 200 μA per 1 V or 2 mA per 1 V. The lowest
recommended value for accurate readings when linear output is selected is 1% of full scale. See
for analog output to current relationship.
Voltage [V]
Current [mA] Current [μA]
0.1
0.2
20
0.5
1
100
1.0
2
200
2.0
4
400
3.0
6
600
4.0
8
800
5.0
10
1000
10.0
20
2000
Table 7.
Linear current monitor voltage output
