________________________________________________________________________________________________
__________________________________________________________________________________________________________
Operator Manual for TACT TA-4800 in NSW National Parks & Wildlife Service User Mode G/00123B Issue 1 Page 25
SPECIFICATIONS
Enclosure
1U
high,
19”
rack
mount,
250mm
deep.
Finish
Dulux
metallic
charcoal
powder
coat.
Power
Requirement
12V
d.c.
nominal,
ground
insensitive.
Power
Consumption 300
mA
@
12V.
Initial Start Up Current
750 mA for 90 ms @ 12V.
Operating Temperature Range
-10
+60
C.
Storage
Temperature
Range -20
80
C ambient.
Humidity, Storage and Operating
To 98% non condensing.
Mean Time Between Failure:
> 20 years.
TACT Radio Interface
IN
10K Ohm input impedance.
Strappable
600
Ohm
termination.
OUT 600
Ohm
output
impedance.
Input
level
-30
+6 dBm adjustable (-13.5 dBm nom.).
Output level
-30
+6 dBm adjustable. (-13.5 dBm nom.).
Frequency
range 300
Hz
5 kHz.
COS detect
High impedance input, floating to +5V, grounded by radio to
indicate COS (inverted sense programmable).
PTT Relay
contact,
switching
to
ground
for
PTT
activation.
Telephone Line Interface
Standard two wire analogue ring in/loop out.
Ringer Equivalent Number (REN)
0.5.
Ring Detect
10V RMS @ 13-55 Hz (25 Hz nominal),
100 ms.
Answer
Delay
100
ms
minimum.
Impedance
Selectable
TN12
Complex
(220
Ω
+ 120nF//820
Ω
) or TN6 (600
Ω
).
TN1 -4, TN7 - 8 also available.
In-band
Signalling
Dual Tone Multi Frequency (DTMF).
DTMF
Dialler
100
ms
on/off,
-10dBm.
DTMF Receiver
-40
0 dBm sensitivity.
5
Tone
Paging
Protocol
CCIR
40
ms.
Keypad
12
push
button
4
x
3
numeric
silicone
membrane
keypad.
Displays 7
segment
numeric
readout,
6
x
status
LEDs.
RS232
Port
9600
baud,
N81
format.
Telephone Service Tone detection
-30 dBm sensitivity, automatic cadence detection.
ACMA Supplier Code Number
N468.
New
Zealand
Telepermit PTC
210/96/003
Warranty
Two years
Firmware
Storage
Medium
EPROM
System
Number
V99530
or
later
Speech
Number V4901.03
or
later