TB9400 Installation and Operation Manual
Installation
71
© Tait International Limited November 2019
P25 Phase 1
The requirements for an external frequency reference and a 1PPS signal are
set out in the following table.
An NTP source is also strongly recommended for P25 Phase 1
non-simulcast systems. This will ensure log timestamps are synchro-
nized, which will assist the diagnosis of faults.
Synchronization requirements are more stringent with the introduction
of simulcast and with TDMA in Phase 2. See Technical Note TN-2411a
Providing Synchronization to Tait Networks.
4.5.2
Equipment Required
It is beyond the manual’s scope to list everything required. However, the
following tools and equipment are specifically required for installing the
base station:
■
Pozidriv PZ3 screwdriver for the M6 screws used in the DC input
terminals on the PMU; M6 (0.25in) screws are also used to secure the
subrack to the cabinet in factory-assembled systems
■
Pozidriv PZ2 screwdriver for the M4 screws used to secure the module
retaining clamps, and for the fasteners used to secure the front panel to
the subrack
■
8mm AF spanner for the SMA connectors, and the subrack ground
connector.
You can also obtain the
TBA0ST2
tool kit from your regional Tait office.
It contains the basic tools needed to install, tune, and service the base
station.
Base Station
Calibration Test
Unit & Cable
The Base Station Calibration Test Unit supports test and diagnosis. It is
available for order under
TBA0STU
. It contains a breakout box, tone
source and speaker.
Transmit and Receive
Receive Only
Band
System
External
Reference
1PPS
External
Reference
1PPS
B band
H band
Non-simulcast
✘
✘
✘
✘
Simulcast
✔
✔
✘
✘
K band
Non-simulcast
✔
✘
✔
✘
Simulcast
✔
✔
✔
✘
