SC4000 REFERENCE MANUAL
5
5.2 POWER SUPPLY
Power is supplied to the SC4000 through the Vdc and GND pins provided on the spring
clamp connector.
The power switch (see Figure 14) switches the power supply ON or OFF for both the
SC4000 and any optional device powered through the 25-pin connector.
CAUTION
The power switch does not control power to the Vdc/GND, +V/-V spring
clamps, therefore any devices connected to these signals (i.e. external
trigger, encoder, etc.), are live and are not protected from polarity inversion.
Disconnect the power supply when working inside the
SC4000
.
OFF
ON
Figure 14 - Power Switch ON/OFF Positions
V+
in
Earth
Ground
Power Supply
VGND
Figure 15 - Power Supply Connections
NOTE
Vdc is electrically connected to +V, just as GND is electrically connected to
-V. This is useful for supplying external trigger, inputs and outputs from the
SC4000 power source, hV and -V signals should not be used as
power supply inputs to the SC4000.
The power supply must be between 10 and 30 Vdc only.
In special cases SC4000 can alternatively accept power through the 25-pin connector (see
par. 4.1.1 for jumper settings).
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