Document: MAN00238A
Page 12 of 28
R:\Documents\MAN Manuals\MAN00238A BRC-15-1111R-STD-J37.doc
5. USER INTERFACE
Operation of the User (Remote) Interface is essentially equivalent to the local front panel controls.
Each unit has been shipped from the factory in Remote mode. To change to Local mode operation,
use the Local/Remote switch located on the rear panel. See Figure 1 for an illustration of the
Local/Remote switch and the Regulator connector located on the rear panel.
Functions that are underlined are operational in both Local and Remote modes. In addition, please
note that the local HV OFF switch is operational in both Local and Remote modes for safety reasons.
Pin Assignments- J4 (HV Regulator 9120010)
Pin #
Function (Input or Output)
1.
Voltage Reference (Input):
This high impedance input should be connected to a low impedance voltage source (less than or
equal to 1k ohms). A typical input would be the analog output of a computer interface. Zero volts
applied here is equal to a zero volt HV output, and +10V is equal to a -15.0kV HV output (0 to +10V
= 0 to -15.0kV).
2.
Common Pin for References (Input):
Connect to the return of the analog signal (or other voltage source) applied to pin 1.
3.
Current Reference (Input):
This high impedance input should be connected to a low impedance voltage source (less than or
equal to 1k ohms). A typical input would be the analog output of a computer interface. Zero volts
applied here is equal to a zero ampere HV output, and +10V is equal to a -1.111A HV output (0 to
+10V = 0 to -1.111A).
4.
Analog Voltage Monitor (Output):
This low impedance output should be connected to a high impedance load. A typical load would be
a voltmeter or the analog input of a computer interface. A micrometer or millimeter, in series with
an appropriate resistor, will function well. It is best if the resistor is adjustable so that the meter
calibration may be trimmed. Zero to +10V on this pin represents zero to -15.0kV HV output (0 to
+10V = 0 to -15.0kV). The source impedance for this signal is 1k ohm.
5.
Common Pin for Analog Monitors (Output):
Connect to negative terminal of meters or return of other measurement instrument applied to pins 4
and 6.
6.
Analog Current Monitor (Output):
This low impedance output should be connected to a high impedance load. A typical load would be
a voltmeter or the analog input of a computer interface. A micrometer or millimeter, in series with
an appropriate resistor, will function well. It is best if the resistor is adjustable so that the meter
calibration may be trimmed. Zero to +10V on this pin represents zero to -1.111A HV output (0 to
+10V = 0 to -1.111A). The source impedance for this signal is 1k ohm.
