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2.2 Extension unit
2.2.1 Functions and instructions
Figure 2.4 HCS-3900ME extension unit
Figure 2.4:
1. Power input
2. Power light (Red)
3. Extension input
Connecting to CMU or last HCS-3900ME.
4. Extension input indicator
5. Extension output (with switch)
Connecting to next HCS-3900ME.
6. Extension output indicator
7. Contribution unit outlet 6P-DIN (1-3)
8. Contribution unit (CU) connection LED
When output works properly (
≥
1 CU connected),
LED will flash; when no CU is connected, LED is
off.
