Optelecom 9522A Installation And Operation Manual page 15

Switch S3 — BERT Test (on Front Panel, Positions 2 and 3)
Position Function
2 Down = BERT Test On (TX1/RX1)
3 Down = BERT Test On (TX2/RX2)
Switch S2 — Timeout/Streaming/Priority Select/CTS/Ring Propagations Set Up
1 2 3
Down Down Down
Up Down Down
Down Up Down
Up Up Down
Down Down Up
Up Down Up
Down Up Up
Up Up Up
4 5 6
Down
Up
Down
Up
Up
Down
Down
Down
7 8 Function
RS232 Anti-Stream Disabled
RS232 Anti-Stream Enabled – 64 Seconds
RS232 Anti-Stream Enabled – 32 Seconds
RS232 Anti-Stream Enabled – 16 Seconds
RS232 Anti-Stream Enabled – 8 Seconds
RS232 Anti-Stream Enabled – 4 Seconds
RS232 Anti-Stream Enabled – 2 Seconds
RS232 Anti-Stream Enabled – 1 Second
Optical Anti-Stream Disabled (RS232 Only)
Optical Anti-Stream Enabled (RS422, RS485 Only)
Priority Select Timeout 2.22 ms.
Priority Select Timeout 8.88 ms.
CTS Low upon Optical Activity — Enabled
CTS Low upon Optical Activity — Disabled
Up Up Ring Propagation Timeout 1 ms.
Up Ring Propagation Timeout 4 ms.
Down Ring Propagation Timeout 12 ms.
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Up = BERT Test Off (TX1/RX1)
Up = BERT Test Off (TX2/RX2)