© 12/2006 UltraVolt HV Rack System Installation and Operators Manual, Rev A
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2) Voltage Programming Dial
This is a ten-turn locking control. When used in conjunction with the
Current/Voltage Preset Switch
(momentary)
, it varies and sets the high-voltage output for the associated channel.
Output voltage can be set
prior to enabling the output, depending on the status of
HV ON
(
HV ON
switch, item 11).
3) Voltage Monitor/Voltage Preset Meter
Each channel has a 4½-digit LED display to indicate either actual output voltage or preset voltage, depending
upon the position of the
Current/Voltage Preset Switch (momentary)
(item 10). The indicated output voltage is
derived from the high-voltage monitor signal on the UltraVolt power supply and is scaled and calibrated to
within 1% of full scale.
4) Voltage Scale Indicator
Each channel has illuminated indicators for voltage scale. The indicators will light with either “VOLTS” or
“KILO VOLTS,” depending upon channel configuration, which is preset at the factory. The indicators are
illuminated whenever the chassis main power is on.
5) Voltage Regulation Indicator
Each channel has an indicator that, when lit, indicates the channel is in voltage regulation mode. Either the
Voltage Regulation Indicator
or the
Current Regulation Indicator
will illuminate, depending upon output load
and upon the programmed settings for voltage and current. The status is selected automatically by the
HV
Rack
®
power supply’s “automatic-crossover
”
capability. This indicator is inactive when the channel’s high-
voltage output is disabled.
6) Current Programming Dial
This is a ten-turn locking control. When used in conjunction with the
Current/Voltage Preset Switch
(momentary)
, this dial varies and sets the maximum output current for the associated channel. Output current
can be set prior to enabling the output, depending on the status of
HV ON
(
HV ON
switch, item 11).
7) Current Monitor/Current Preset Meter:
Each channel has a 4½-digit LED display to indicate either actual output current or preset current, depending
upon the position of the
Current/Voltage Preset Switch (momentary)
. The indicated output current is derived
from the current monitor on the UltraVolt power supply and is scaled and calibrated to eliminate any offsets.
8) Current Scale Indicator
Each channel has illuminated indicators for current scaling. The indicators will light “AMPS,” “MILLI
AMPS,”
or “MICRO
AMPS,” depending upon channel configuration, which is preset at the factory. The indicators are
illuminated whenever the chassis main power is on.
9) Current Regulation Indicator
Each channel has an indicator that, when lit, indicates the channel is in current regulation mode. Either the
Voltage Regulation Indicator
or the
Current Regulation Indicator
will illuminate, depending upon output load
and the programmed settings for voltage and current. The status is selected automatically by the
UltraVolt HV
Rack
power supply’s “automatic-crossover
”
capability. This indicator is inactive when the channel’s high-
voltage output is disabled.
10) Current/Voltage Preset Switch
The
Current/Voltage Preset Switch (momentary)
is used to display or to both display and change the voltage
and current program settings for each channel. When pressed and held, voltage and current set points are
displayed. When pressed and held while manipulating either the
Voltage
or
Current Programming Dial (items 2
and 6)
, the set points can be adjusted. Releasing the
Current/Voltage Preset Switch (momentary)
returns the
voltage and current meters to output monitor. Voltage and current can be adjusted when the output is either
enabled or disabled, depending on the status of
HV ON
(
HV ON
switch, item 11).
11) Channel Output Enable Switch, HV ON
When the pushbutton
HV ON
(latching) switch is depressed, the switch illuminates and the high-voltage output
for that channel is enabled.
