Operation; Introduction; Safety Precautions; Wiring - Keithley 7154 Instruction Manual

SECTION 2
Operation
2.1 INTRODUCTION
This section provides information needed to use the Model 7154 2-Pole
High Voltage Card with the Models 705 and 706 scanner mainframes.
Once the card is installed in the mainframe, refer to the mainframe in-
struction manual for complete operating instructions.
2.2 SAFETY PRECAUTIONS
WARNING
User supplied lethal voltages may be present on the PC
board or the connections. Turn off all Dower and
discharge stored energy in external circuitry before mak-
ing or breaking connections.
1. Do not exceed the Model ?l54 maximum voltages of -tllOOV peak
terminal to terminal and +llOOV peak any terminal to chassis.
2. Make sure the scanner mainframe is grounded through an earth
grounded receptacle before operation.
3. inspect all test lead connections for wear and defects such as cracks
and exposed wires.
4. Use appropriately rated cables when switching high voltages.
2.3
WIRING
Each channel on the Model il54 card consists of a double-pole. nor-
mally open (2.Form A) switching relay. The Model 7154 will switch any
one of the 10 signals (inputs) to one output, or switch one signal to
any one of 10 outputs. See Figure 1-l.
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