Midian Encryption Programming and Service Manual
Tait Orca Portable (TOP) Encryption
29
June 2006
© Tait Electronics Limited
Signal levels and pin assignments
3.3
Programming the TOP Radio
Before programming the TOP Encryption radio, you will need:
■
up-to-date standard Tait Orca Portable (TOP)
Programming Applications installed, and familiarity with their
operation. TOP Programming Applications are on the CD with
the TOPA-SV-116 Programming Kit or from http://
support.taitworld.com/ at Portable/Programming Software
which requires Tait Authentication System (TAS) access.
■
conventional and trunked programming applications
■
download and configuration application
■
calibration application
■
encryption flex fitted to the TOP radio. The flex is available in the
TOPA-EA-001 Encryption Upgrade Kit. Instructions for fitting begin
on page 29
.
Function
Mode
Name
Pin
Module
TOP Radio
Power Supply
V+
1
5V regulated
Reset
I/P
RS
2
Active low
Resets whenever supply lower
than 4.75V
Tx pressel
I/P
PTT
3
Active low
CMOS
Busy
I/P
RX
4
Active low
CMOS
Mode
I/P
MO
5
Active low
Momentary or level sensitive
Data to Scrambler
I/P
D-SC
6
Hardwired module
programming I/P
If reqd.
Data to Radio
O/P
D-RA
7
Hardwired module
programming O/P
If required
Mode Indicator
O/P
IND
8
Active high
3mA into LED
Emergency
I/P
EMG
9
Active Low
Module pull-up to 5V
Code select 8
I/P
CS8
10
Active Low
Module pull-up to 5V
Code select 4
I/P
CS4
11
Active Low
Module pull-up to 5V
Code select 2
I/P
CS2
12
Active Low
Module pull-up to 5V
Code select 1
I/P
CS1
13
Active Low
Module pull-up to 5V
Ground
Gnd
14
Transmitter to
scrambler
I/P
TX-SC
15
AC coupled to 250Hz
200 mV p-p at 1kHz for 2/3 max
deviation
Scrambler to
transmitter
O/P
SC-TX
16
DC coupled
Approx. unity thru gain
Receiver to scrambler I/P
RX-SC
17
AC coupled to 250Hz
650 mV p-p at 1kHz for 2/3 max
deviation
Scrambler to
Receiver
O/P
SC-RX
18
DC coupled
Approx. unity thru gain
Audio alert
O/P
AL
19
DC Coupled
Trunking delay
I/P
TRK
20
Provision for future
