Campbell Scientific SC532A CS I/O Peripheral to RS-232 Interface - Manual (Page 8)

SC532A 9-Pin Peripheral to 9-Pin RS232 Interface
6. Portable Battery Power
The 14020 and 14291 field cables are available for remote sites lacking 120
VAC. The 14020 field cable is equipped with a DB9 for connection to the
datalogger’s CS I/O port.
The 14291 cable terminates in two wires for attachment to the 12 V and power
ground terminals of the datalogger or 12 Vdc power supply. For earlier
dataloggers lacking 12 V on CS I/O port (check voltage between pin 8 and
power ground), the 14291 field cable needs to be used.
If using the 14291 cable, connect RED wire to the “12 V” terminal and
BLACK wire to power ground terminal. The correct barrel connector polarity
is (+) on the inner bore and (
−) on the outer sleeve. If using a separate 12 Vdc
power supply, a common ground must be shared with the datalogger’s power
source.
See Table 2 for the maximum operating currents required for selected CSI
peripherals.
Before plugging power connector into SC532A, if you have
1) the 14291 field cable, 2) replaced the factory AC
adapter, or 3) built your own dc power cable, make sure
that the voltage polarity is correct on the coaxial (barrel)
connector. Application of REVERSED POLARITY power to
the SC532A can damage the SC532A, datalogger, and
peripheral (not covered under warranty)! CAUTION
Barrel connector inner bore (+)
Barrel connector outer sleeve ( −)
The maximum POWER input voltage is 17 VDC!
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