User's Manual

UHF Fibre-Fed Remote Site
User Handbook
Handbook N.-60-137601HBK Issue No:-1
Date:-18/03/2005
Page:-
37 of 38
4.9 JWS150-24/A PSU (96-300060)
4.9.1 Description
The power supply unit is a switched-mode type capable of supplying 24V DC at
6.25Amps continuously. Equipment of this type typically requires approximately 2-
2.5Amps at 24V DC, so the PSU will be used conservatively ensuring a long operational
lifetime.
No routine maintenance of the PSU is required. If a fault is suspected, then the output
voltage from the power supply may be measured on its output terminals. This is typically
set to 24.5V. The output voltage may be varied using a multi-turn adjustment
potentiometer mounted close to the DC output terminals.
All the PSU’s used in AFL Cell Enhancers are capable of operation from either 110 or
220V nominal AC supplies. The line voltage is sensed automatically, so no adjustment or
link setting is needed by the operator.
4.9.2 Technical Specification
AC Input Supply:
Voltage: 110 or 220V nominal
90 to 132 or 180 to 264V
(absolute limits)
Frequency: 47 to 63Hz
DC Output Supply:
Voltage: 24V DC (nominal)
22 to 26V (absolute limits)
Maximum current: 6.25A (150Watts)