Delta Tau Universal PMAC Lite, Hardware Reference Manual

Page: 63 / 66

Universal PMAC Lite
PMAC L
ITE
Connector Pinouts 56
TB1 (JPWR): Power Supply
(4-Pin Terminal Block)
Top View
Pin # Symbol Function Description Notes
1 GND Common Reference Voltage
2 +5V Input Positive Supply Voltage Supplies all PMAC digital circuits
3 +12V Input Positive Supply Voltage Ref to digital GND
4 -12V Input Negative Supply Voltage Ref to Digital GND
This terminal block can be used to provide the input for the power supply for the circuits on the PMAC board when it is
not in a bus configuration. When the PMAC Lite is in a bus configuration, these supplies automatically come through the
bus connector from the bus power supply; in this case, this terminal block should not be used.
To keep the optical isolation between the digital and analog circuits on PMAC, provide analog power (+/-12V to +/-15V
and AGND) through the JMACH connector, instead of the bus connector or this terminal block.