User's Manual Part 2

104 Part ######A revision 00a-DRAFT March 29, 2006
Macro Base Station Installation Procedures (NPM-1000)
Configure GPS Clock Module
Base stations configured for +24V operation require a GPS clock module for synchronization purposes
over the air interface. To ensure correct operation of the GPS clock module, you need to perform the
following configurations:
 Set compensation for antenna cable delay
 Select automatic determination of antenna position
 Select UTC as a time reference
 Verify GPS clock module has acquired
To configure the GPS clock module, you need to log in to the module over a serial connection. Figure
6.1 shows the wiring and connections for the custom adapter.
Figure 6.1 GPS Serial Interface Adapter
NOTE: See the Zyfer AccuSync-R GPS Synchronized Time and Frequency
Instrument User’s Manual for information about cabling and issuing commands over a
serial interface.
NOTE: Base stations configured for –48V operation do not require a GPS clock
module.
FREQUENCY OUT
PULSE OUT
TTL
ANTENNA
TPPS
TTL
ALARM
1
2
CONTROL
TTL
00330
DB9F
Null Modem Cable
Control Cable
Laptop or Workstation
DB9FDB9M
DB9M
Back of GPS Clock Module