PPC2+™ Operation and Maintenance Manual
Page 151
©2001 DH Instruments, Inc.
7 . 2 A N A L O G
Table 21 should be used to correctly build the interfacing cable required to connect analog signals
to the PPC2+ analog input option.
Table 21. Analog Port/Signal Descriptions
PPC2+ ANALOG PORT
(15 PIN DSUB) PIN NO.
SIGNAL DESCRIPTION
1 Power
Common
2 Power
Common
3 Power
Common
4
Analog input + for channel 4
5
Analog input + for channel 3
6
Analog input + for channel 2
7
Analog input + for channel 1
8
Analog input - for channel 4
9
Analog input- for channel 3
10
Analog input - for channel 2
11
Analog input - for channel 1
12
+24 V power source
13
+24 V power source
14
+24 V power source
15
+24 V power source
7.2.1
DETAILED SIGNAL DESCRIPTIONS
•
V power source: These four pins provide common access to a +24 Volt power supply.
This power source can be used to power the analog equipment that is providing an analog
signal to the PPC2+. These pins can source up to 250 mA at 24 Volts. Any combination
of devices on the four channels can be powered by this source as long as their total draw
is less than 250 mA at 24 Volts.
•
Power common: These three pins are common and provide the ground path for the
+24 Volt line.
•
Analog input + for channels 1 - 4: These pins are used to input analog signals from
external devices into the PPC2+.
•
Analog input - for channels 1 - 4: These pins are the analog ground to which each analog
input channel is referenced. They should be connected to the - signal of your device
under test and not to the power common.
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Summary of Contents for PPC2+
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