Comtech EF Data CIC-20 LVDS to HSSI - Manual (Page 21)

9
Chapter 4. OPERATION
4.1 MODEM CONFIGURATION
After applying power to the modem, the following configuration changes must be made
to the modem in order for it to operate with the CIC-20.
1 Program the transmit and receive data rates to what is desired for Tx and Rx.
2 Set the data interface type to LVDS. The modem itself operates in this electrical format while
the converter translates between LVDS and HSSI.
4.2 MODE SELECT
The dip switch (S2) selects the functionality of the control signals, CA and TA. It can be
accessed with a small screwdriver. The OFF (down) position is the default. Switch S1 is
not used.
Dip Switch S2
ON (Up) TA CONTROLS TX CARRIER
RR CONTROLS CA
OFF (Down) TA TO CA LOOP
Figure 3.
Switch Location