User Manual

27745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

2.9 Local and RF Connectors

The Local connector allows the technician to communicate with the transponder and power

supply through a PC’s RS-232 serial port.

The RF connector is the primary I/O port to the CMTS.

Fig. 2-10, Local Port Fig. 2-11, RF Connection

2.10 Verify Transponder Operation

During initial transponder power-up, the RDY LED will be on solid.

• Once the reset is complete, the RDY LED will ﬂ ash at a ½ sec ON, ½ sec OFF rate.

• The RX LED will now be ON, ﬂ ickering OFF occasionally, indicating a link with the CMTS

has been established.

• The TX LED will be off (idle state), but will ﬂ icker on when transmitting data to the CMTS.

T C/D

T A/B

AUX PWR

LOCAL

LCL

RDY