Installation
Page 18
Jumper S12 − Soft Carrier Turn Off
Settings: None
8 ms (default)
26 ms
Jumper S12 configures the modem to either turn off the transmitter
immediately upon release of Request To Send, or send a Soft Carrier
Turn Off signal of 900 Hz for 8 or 26 ms at the end of each
transmission.
Jumper S13 − Anti-Streaming
Settings: None (default)
4 seconds
7.6 seconds
14 seconds
28 seconds
56 seconds
Jumper S13 lets you select an anti-streaming time or use no anti-
streaming at all. Anti-streaming is typically used in multi-point
applications to prevent a malfunctioning slave from occupying the line
indefinitely.
When anti-streaming is active, the modem can only transmit data for up
to 56 seconds. Thereafter, the modem’s transmitter is automatically
turned off. The modem then looks for an ON-to-OFF transition of
Request To Send (RTS) before proceeding with normal operation.