17
CHARGEMASTER VCM
5201247 Rev. C
Monitoring the Output Voltage Remotely
1. The output voltage can be monitored externally by a digital meter or analog
interface. The maximum output current supplied by the D-Sub connector for
this option is 0.5 mA.
2. Connect external multimeter to D-Sub connector pins 4 and 17. If the Remote
I/O setting is 0-5V or 0-10V, set multimeter to a DC voltage meter. If remote
I/O setting is 0-20 mA or 4-20 mA, set the multimeter to a current meter.
3. In order to determine the output voltage, multiply the multimeter reading by
the scale factor in the table.
30 kV Units Voltage Output
60 kV Units Voltage Output
Remote I/O Setting
Scale Factor
Remote I/O Setting
Scale Factor
0-5V
6
0-5V
12
0-10V
3
0-10V
6
0-20 mA
1.5
0-20 mA
3
4-20 mA*
1.875
4-20 mA*
3.75
* Subtract 4 from the meter reading, then multiply by scale factor.
Monitoring the Output Current Remotely
1. The output current can be monitored externally by a digital meter or analog
interface. The maximum output current supplied by the D-Sub connector for
this option is 0.5 mA.
2. Connect external multimeter to D-Sub connector pins 5 and 18. If the Remote
I/O setting is 0-5V or 0-10V, set multimeter to a DC voltage meter. If remote
I/O setting is 0-20 mA or 4-20 mA, set the multimeter to a current meter.
3. In order to determine the output current, multiply the multimeter reading by
the scale factor in the table.
30 kV Units Current Output
60 kV Units Current Output
Remote I/O Setting
Scale Factor
Remote I/O Setting
Scale Factor
0-5V
1
0-5V
0.5
0-10V
0.5
0-10V
0.25
0-20 mA
0.25
0-20 mA
0.125
4-20 mA*
0.312
4-20 mA*
0.156
* Subtract 4 from the meter reading, then multiply by scale factor.
