GE 994-0089 User Manual

GE Energy 

 

994-0089–1.00–2, General

 

 

The IRIG-B Input Adapter (GE Part No. 520-0211) plugs into a dedicated IRIG-B slot (slot 9) 
on the D400. The IRIG-B Input card accepts an IRIG-B signal in one of three input formats 
through a corresponding connector type: 
•  Modulated IRIG-B through a BNC connector J2 
•  Demodulated IRIG-B (TTL) through a terminal block TB1 
•  Fiber Optic through a Receive (RX) 820-850 nm ST connector U12 
The IRIG-B signal (TTL) can be subsequently distributed to attached IEDs through one of 
the following output methods: 
•  IRIG-B Distribution Adapter (GE Part No. 520-0212). See section “3.7 IRIG-B Distribution 

•  RS-232 Adapter (GE Part No. 520-0207). See section “3.3 RS-232 Adapter” 
•  On-board fiber optic output (TX) on 820-850 nm ST connector U13 
See section “4.6 IRIG-B Connections” for wiring instructions. 

The input signal formats and output options are selectable via three switches on the IRIG-
B Input card: 
•  IRIG-B state option is configured by switch SW1 
•  Input signal format is configured by switch SW2 
•  Fiber optic TX option is configured by switch SW3 
Follow instructions for setting the switches to select the appropriate IRIG-B signal formats 
and functions

. 

The factory default setting is the Standard state on each channel. 

Switch SW1 controls the state option for the IRIG-B Input card. It contains two switch 
positions that can be set to ON or OFF to select the appropriate IRIG-B state option. 
 

Standard (default) 

ON 

OFF 

Inverted OFF 

ON