August 2008
1-4 Installation & Operation
Input/Output Connections
(cont.)
The Infrared Interface The PT878 comes equipped with an internal infrared transceiver
(shown in Figure 1-1 on page 1-2) 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; they can also program the meter
via the optional PanaView™ software interface. The PT878 was
designed for use with products that comply with the IrDA protocol.
Caring for the PT878
Batteries
The PT878 is equipped with built-in rechargeable batteries to support
portable operation. To maintain optimum performance, these batteries
require a minimum of maintenance.
Charging the Batteries When you receive the PT878 or if the batteries have not been used for
a long period of time, you must charge the batteries before operation.
To fully charge the batteries, eight hours is required. When fully-
charged, the batteries provide 8 to 10 hours of continuous operation.
An internal battery gauge indicates the remaining power in the
batteries.
Table 1-1: Cable Assembly for Analog Inputs/Outputs
Pin # Wire Color Description
1 Black Analog Out 1
2 Red 16 V (switched)
3 White Temperature Transmitter Supply or
Return (Input A)
4 Yellow Temperature Transmitter Supply or
Return (Input B)
5 Green Analog Ground
6 Orange Digital Output
(frequency output,
pulse totalizer, diagnostic output or
calibration gate)
7 Blue Digital Ground
8 Violet Receive Monitor
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