Line Powering
The SLx4 has built-in full line powering which can
be used to provide power to masthead amplifiers.
When connected to a masthead amplifier, the SLx4
will send the required power out of the IN UHF
socket up to the masthead amplifier (up to 25mA).
Please see your masthead amplifier operating
instructions for more details.
It is important to ensure that there is no equipment
between the IN UHF socket and the masthead
amplifier output socket in order to provide a non-
interrupted 12V power supply to the masthead
amplifier. When connected after any equipment, the
amplifier will automatically detect that no masthead
amplifier is present and so will not output 12V.
Short circuit protection
For added safety the SLx4 has built-in short circuit
protection. Should a short circuit be detected, the
amplifier will shut down in order to prevent any
possible damage. Should this occur, all outputs will
be switched off but the power LED will remain lit.
To reset the system following a short circuit,
simply remove all outputs and inputs, switch off
the amplifier and remove the power cable from
its socket for approx 30 seconds. You should then
reconnect the amplifier outputs one by one until
you can find which output is causing the short
circuit.
Amplifier features
Specifications
Inputs Outputs UHF Freq. VHF Freq. Max output Gain per port
(VHF) UHF
Noise
Isolation
Loss
Weight
Dim. mm
2
4
470-790MHz 30-300MHz 90dBµV
(9dB) 12dB
3.5dB
23dB
518g
178 x 85 x 46
