Olson Technology OLRR - Manual (Page 5)

Page 5
DC POWERING AND ALARMS
The current requirements for the Tx and Rx units are as follows:
Input Voltage
8VDC 12VDC 15VDC 18VDC 24VDC
Tx 250mA 170mA 135mA 115mA 85mA
Rx 200mA 150mA 120mA 100mA 70mA
CAUTION!
The Tx & Rx have flying leads which carry DC inputs and alarms. Any unused wires
should be wrapped with electrical tape to avoid shorting that could damage the unit.
The Tx & Rx have built in bias-T for remote powering of an LNB for the Tx or could be
used to power the Tx & Rx though the RF connector. This feature can be enabled or
disabled (Factory Preset) by moving the internal jumper JP1, see Figures 2 & 3. The Tx
& Rx is powered by the Red Wire; +8V to +24 V and the Black Wire; ground or “-”. The
DC DC
flying cable also has a shield wire that can be grounded to shield any external signals.
The Rx also has a Brown or White Wire that is an Open Collector Low Optical Level
Alarm. It pulls low when the optical level falls below an acceptable level.
Flying Lead Signal Description:
COLOR Tx/Rx SIGNAL DESCRIPTION
Red Tx DC Input, 8-24 V
DC
Black Tx Ground, DC Return
Silver Tx Shield, Shield wire, connect to Ground
Red Rx DC Input, 8-24 V
DC
Black Rx Ground, DC Return
Silver Rx Shield, Shield wire, connect to Ground
Brown or White Rx Open Collector Output/Low Rcvd Optical Power
INSTALLATION
Optical Connectors
Only APC type connectors in the product. Most installation problems are caused by the
use of the wrong type of mating optical connector. Be sure that all mating optical
connectors are APC type. They are usually green. Mating to a PC or UPC type will result
in poor to no performance. PC or UPC connectors sometimes have a blue marking.