H6
T800 Ancillary Equipment
M850-00
31/09/98 Copyright TEL
External Frequency Reference
T800-06-0000 External Frequency Reference Kit
The T800-06-0000 kit provides an additional D-range plug/PCB assembly which incor-
porates a miniature RF connector to carry an externally generated 12.8MHz reference
signal into a T800 Series II module. This enables the use of very high stability external
reference oscillators for special applications.
The D-range PCB is also fitted with a Micromatch socket which can be connected to
SK805 in the microcontroller section via the supplied loom to provide access to the
channel change lines.
The kit comes complete with fitting instructions and all installation hardware.
T800-06-0001 External Frequency Reference Kit
The T800-06-0001 is the same as the T800-06-0000 kit with the addition of a special coax
cable for external frequency reference input. One end of this coax is terminated with a
miniature RF connector which fits into the D-range socket in an appropriate backplane
PCB (e.g. T800-52-0000) to connect to a T800 Series II module fitted with a T800-06-0000
kit. The other end is terminated with a BNC connector which can be mounted on the
rack frame.
T801-00 Frequency Reference Module
The T801-00 frequency reference module provides a high stability frequency source to
which the synthesiser within a T800 Series II base station can be locked. The master
standard within the T801-00 is primarily intended to be rubidium, although high qual-
ity ovenised crystal oscillators can also be used in applications where more frequent
readjustment of frequency is acceptable. The T801-00 converts the output frequency
from its master standard to the 12.8MHz required by the T800 Series II base station.
Refer to M801-00.
T801-10 OCXO Module
The T801-10 OCXO module provides a high stability frequency source to which the syn-
thesiser within a T800 Series II base station can be locked. This will provide T800 Series
II transmitters with the frequency stability required for simulcast transmission. The
master standard within the T801-10 is a high quality ovenised crystal oscillator (OCXO).
Three outputs are provided on the rear panel, which allows up to three T800 Series II
transmitters to be referenced to the source oscillator.
Refer to M801-10.
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