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1.2 LED INDICATORS
The ETIB contains two LEDs which have the following functions: Carrier Detect (CD) and
Request to Send (RTS). When the board is sending a Request To Send, LED DS2 (RTS) will
be ON and LED DS1 (CD) will be OFF. Conversely, when the ETIB is receiving data from a
3508 Transmitter, LED DS2 (RTS) will be OFF and LED DS1 - Carrier Detect (CD) will be
ON.
1.3 JUMPER JP1
Jumper JP1 is used to configure the ETIB for operation with one or two 3508 Transmitters.
If only one 3508 Transmitter is to be connected to the ETIB, Jumper JP1 must be installed
across JP1-1 and JP1-2. Additionally, when only one 3508 Transmitter is to be connected to
the ETIB, it must be connected to connector TB1. When two 3508 Transmitters are
connected to the ETIB, Jumper JP1 must be removed and stored in either JP1-1 or JP1-2.
PIP-EXPTIBS
Page 2
Expansion Transmitter Interface Bds.
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