Technical data

Installation
Cable and Power Connections
Electrical installation must only be carried out by suitably qualified
personnel. Particular attention should be given to protecting the site
from the damaging effects of lightning strikes (refer to the section on
Protection against Lightning on page 2-6).
The GPS Receiver requires a minimum of four connections to be made:
 Chassis Earth
 Antenna
 Output (Timing/Frequency)
 Power
Power supply voltage is to be a nominal 48Volts DC. Before commencing
electrical connection, reference should also be made to the technical
data (see Appendix 1). Power supplies and returns cables should be
secured to avoid accidental damage, and isolated from the chassis at all
times.
Ensure compatibility of power supply with the GPS Receiver being
installed. The integrity of the GPS Receiver cannot be guaranteed if
operated outside specified design limits.
2.048MHz
Command Unit: rear panel
GPS TIME & FREQUENCY
RECEIVER
ANTENNA
1PPS
FUSE
2A
TIME OF DAY
CHANNEL
COMMAND
CHANNEL
POWER LED
-48V
2A
POWER
Figure 2-12: Cable Connections
Casing Ground Connection
The GPS Receiver is grounded (earthed) through a threaded stud which
is provided on the rear of the casing. Alternatively, this may be
repositioned to utilize one of the unused threaded insets (on the side of
the GPS Receiver casing), intended for the fitting of alternative
mounting flanges.
GPS Timing Receiver Installation and Operation Manual
2-17