PIP-EXPTIBS Page
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Expansion Transmitter Interface Bds.
Section 1
INTRODUCTION
1.1 DESCRIPTION
Expansion Transmitter Interface Boards (ETIBs) allow up to two (2) Bristol, Series 3508C
Transmitters to communicate with an ACCOL loaded host TeleFlow Plus Electronic Gas
Measurement Computer (EGMC) (3530-20B) or TeleRTU Plus (3530-25B). The EGMC/RTU
polls and stores data from each transmitter and communicates with the network. Two
LEDS on the ETIB Board [CD (DS1) & RTS (DS2)] indicate the communication status.
The ETIB Board is housed in either the standard TeleFlow Plus or TeleRTU Plus enclosure
and is interfaced to a TeleFlow/TeleRTU CPU Board via the CPU Board’s Expansion Con-
nector. Power from and communication with the host CPU Board is supplied through the
Expansion Connector. ETIB Boards contain one jumper (JP1) for configuration purposes.
1.1.1 Transmitter Operation
Each Transmitter must be assigned a unique address via the SMARTKIT program as
described in Section 4.2 PROGRAM LOADING AND STARTUP of the appropriate 3508
Transmitter manual. Additionally, all Transmitters wired to the TI Board must be operated
in the minimum current mode (3.8 mA). This mode is selected via the SMARTKIT program
as described in Section 4.7 TRANSMITTER OPERATING MODES of the appropriate 3508
Transmitter manual, i.e., CI-3508-10C, CI-3508-30C or CI-3508-99C.
Figure 1 - Transmitter Interface Board P/N 392951-01-0