6-6 REMOTE/AUTOMATED CONTROL
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maintain the program values for the discharge voltage and current, while
maintaining the ratio established by the starting gas setpoints.
Table 6-3. Pin descriptions for the analog inputs on the DB-37 connector.
Pin
Number
Description
3
Discharge Voltage Setpoint. 0-5 volts corresponds with 0 to the maximum
output voltage for the Discharge Power Supply. Referenced to pin 7 or 8.
4
Emission current set point. 0-5 volts corresponds with 0 to the maximum
emission current in amps for the Emission Power supply being used.
Referenced to pin 7 or 8.
7
Common.
8
Common.
11
Gas Channel 1 Setpoint. Referenced to pin 13.
12
Gas Channel 3 Setpoint. Referenced to pin 13.
13
Gas Setpoint Common. Reference for gas channel setpoints. See section
6.2.3.1 below.
22
Discharge Current Setpoint. 0-5 volts corresponds with 0 to the maximum
level of discharge current in amps for the Discharge Power Supply that is
being used. Referenced to pin 7 or 8.
26
Keeper Current Setpoint. 0-5 volts corresponds with 0 – 2 amps. This
should usually be set to 1.5 amps
30
Gas Channel 2 Setpoint. Referenced to pin 13.
31
Gas Channel 4 Setpoint. Referenced to pin 13.
6.2.4 Analog Outputs for the DB-37 Connector
The analog outputs for monitoring the operating parameters are available
on the on the DB-37 connector as described below in table 6-4. The analog
outputs are available in both remote and local operating modes.
When the controller is in Standby Mode, the values on the analog output
pins are the setpoint values stored in the individual programs. The setpoints
for each of the four programs can be reviewed in standby mode by select-
ing the program as indicated in table 6-2 above. Note that the setpoints
can only be viewed with the Auto Controller in standby. Once a program is
enabled, the values for the analog outputs are the actual values.
