150-402-111-02
L
F
IST OF
IGURES
1. Typical HiGain System .......................................................................... 1
2. Front Panel ............................................................................................ 7
3. TLOS Switch Location........................................................................ 11
4. Card-edge Pinouts ............................................................................... 15
5. HRU-402 Block Diagram.................................................................... 17
6. Installing the HRU-402 in a Remote Enclosure.................................. 19
7. DB-9 and DB-25 RS-232 I/O Interfaces ............................................. 20
8. Connecting the HRU-402 to a Maintenance Terminal........................ 21
10. HiGain HLU-231 Remote Terminal Main Menu................................ 25
11. System Spans....................................................................................... 26
14. Span 1 Status Screen for Doubler Applications .................................. 31
18. HiGain System Loopbacks.................................................................. 42
24. Four Doublers, Span 1 Alarm History Screen..................................... 53
HRU-402 List 1A
December 8, 1998
List of Figures
vii