Nat PTA12-300 - Specifications; Electrical Specifications

:*:nat
t
PTA12-300
POTS Telephone
Adapter with NVIS Display
SM55-3 lnstallation
and
Operation Manual
1.4
Specifications
1.4.1
Electrical
Specifications
Power
Supolv
lnput Voltage
Normal
operation
lnput Current
Liqhtinq
lnput Siqnals
Microphone
lmpedance
Circuitry Type
Mic Bias
Key ln
Outout
Siqnals
Rated
Level
Circuitry
Type
Frequency
Response
Distortion
Audio Noise
AbnormalOperation
+32.2Vdc(maximum)
+27.5
Vdc
(nominal)
+20.5 Vdc
(minimum)
Power lnput Voltage
with reverse, over voltage
and
over current
protection
+30.3 Vdc
(maximum)
+27.5Vdc
(nominal)
+22.OVdc
(minimum)
+18.0
Vdc
(emergency)
0.3 Amps max.
@
+27.SVdc
1.0
mA max.
@
+27.5Vdc
1.0 mA
max.
@
+5.0 Vdc
250 mVrms rated input level,
amplified dynamic
150 Ohm t10%
Single Ended
+13
+0.5
Vdc
(selectable
via
switch)
Used to remotely
controlthe Hook function. Momentarily
pull
to
Power Ground for
a
period greater
than 500 ms to
activate the
Hook
function. Momentarily open
circuit or apply voltage
greater
than 26 Vdc for
a
period greater
than 500 ms to
set the Hook to
inactive. Optically isolated
and requires 10 mA max
source
current.
20
dBm
+3
dB into 600 or 150 Ohms
@
100mW
Differential
(3
dB roll-off
from 350
Hz
to 3 kHz
<5% THD
@
rated
power
output
<
-50
dB
from
rated output
(no
signal)
Section 1
Rev: 1.00
lssue 4
Page 1-2
ENG-FORM:
800-01
14.DOT
CONFIDENTIAL
AND PROPRIETARY
TO NORTHERN AIRBORNE
TECHNOLOGY LTD.
The document reference is online, please check the correspondence between the online documentation and the printed version.