April 2004
2-4 Initial Setup

Analog Input/Output Connections (cont.)

The Infrared Wireless Interface

The PT878GC comes equipped with an internal infrared
transceiver (see Figure 2-2 on page 2-2) that enables
communication between the meter and other IR devices,
particularly the IR ports or dongles (IR to RS232 adapters) of
Windows®-based PCs. Users can send and receive site and log
data. The PT878GC was designed for use with products that
comply to the IrDA protocol. For more information on
establishing IR communications between the PT878GC and your
PC, refer to Appendix B.
Table 2-1: Cable Assembly for Analog Inputs/Outputs
Pin Number Wire
Color Description
1 Black Analog Out 1
2 Red 16 V (switched)
3 White Supply Temperature
4 Yellow Return Temperature
5 Green Analog Ground
6 Orange Digital Output
7 Blue Digital Ground
8 Violet Receive Monitor