70
Transcrypt Programming
M2259-00-200-812
Encrypted Radio Programming and Service Manual
Copyright TEL
6.2 Direct
Programming
Via direct programming, the Transcrypt Programmer allows a computer to alter a radio’s
encryption module settings by direct connection via the TOP Encryption Direct Programming
Cable (IPN TOPA-EA-008G) as shown in the diagram below. This is used at a service desk
during initial setup of the radio, testing or maintenance, or to change the way features are
programmed.
Refer to the Transcrypt Programmer and Module manuals for features which are programmable,
what values they can have and how to set them.
Note:
Some link settings and functions on the modules may be for future use, or require
special set-up or additional components to operate. If a function is not documented, ask
for assistance before using it.
6.3 Operation
The following sequence of events occurs during Over-The-Air-Reprogramming and Direct
Programming:
1.
Codes are typed, or menus selected on the program running on the PC
2.
The RS232 cable carries data to the Programming modem.
3.
The modem encodes this data to a sequence of audio tones using PSK signalling
4.
The OTAR lead applies these audio tones to the programming radio audio input, and
transmits them over the radio channel.
5.
All radios on the channel receive the programming signal.
6.
As audio passes through the encryption modules, they check the ANI ID.
7.
Radios not matching the ANI ID ignore the data
8.
The single radio with the matching ID accepts the data, and updates its memory registers.
9.
It then transmits back an acknowledge message indicating successful data loading.
10.
The programming radio passes this message back to the modem which converts it to an
‘acknowledge response’ message displayed on the computer.
6.4
Using a TOP as an OTAR Programming Transmitter
A standard TOP radio - with no Encryption module fitted - on the correct frequency is all that is
required for an OTAR programming transmitter radio. The TOP programming cable (IPN 219-
Computer for
Direct programming
TR30-306X Programmer
- same code as radio
Data download
and acknowledge
connect cable to
a
TOP
ccessory connector
TOP Encryption Direct
Programming Cable
RS232 serial cable
(not provided)
