Drake SCT4860 8PSK Sat-1024QAM Cable Transcoder - Manual (Page 8)

8 Controls and Connections (continued)
Rear Panel Connections
R1 - RS232 OUT - this RS232 serial connector can connect to the RS232 iN connector on another rack containing
a PS150, PS151, or PS100 power supply (included transcoders could be SCt860, SCt1860, SCt2860, or
SCt3860 transcoders), thus allowing computer control of multiple racks of these units with the same PC connection.
R2 - RS232 IN - Connecting this RS232 serial connector to the serial port of a personal computer equipped with
Drake RS232 remote control software, allows remote monitoring and programming of each transcoder. Alternatively
can be connected to the Drake SCteci. No connection is required for front panel control.
R3 - Fan Power- Connect the two conductor cable from the front panel fans to this connector.
R4 - Power Out - these connectors are for connecting the power cables from each individual SCt4860 to the
PS151 power supply. the other end of each cable can be plugged into any one of the ten transcoders. However, to
minimize confusion, it is strongly suggested that the left most unit (as viewed from the front panel) be connected to
power supply socket number 1, the second from the left to number 2, etc. Do not attempt to use any power supply
other than this Drake supplied model.
R5 - Power In - this connector supplies power and program control to the SCt4860. Connect a cable from this
connector to the appropriate connector on the PS151 power supply (see R4 above).
R6 - RF Output - this is the qAm output channel Rf output. the frequency range is between 54 and 864 mHz
depending upon the channel selected. the output level is +25 to +40 dBmV, nominal, adjustable in 1 dB steps.
NOTE: Although the above discussions refer to the SCt4860 transcoder modules, other Drake
transcoders may be mixed with SCt4860s in the same Rmt150 rack mounting tray. these include
the SCt1860, SCt2860, and SCt3860. the PS151 power supply/control module will recognize
each type of transcoder. Also, SCt4860 transcoders, although controlled by a different power
supply model, the PS100, can have the RS232 control 'daisy chained' with the PS150 and PS151
controlled transcoders.