
Communication solutions for power utilities
1U SHELF TYPE MAS-2
WITH ASYNCHRONOUS PROGRAMMABLE MODEM MAFP - Rev. 9 (January 2018)
8/39
S/N
12 dB for BER<10
-4
Input impedance
Selectable by means of jumper between:
600
.
High impedance: >6 k
up to 600 Hz.
>10 k
between 600 Hz and 3800 Hz
Return loss
>18 dB between 420 and 3800 Hz
Balanced
>60 dB between 420 and 3800 Hz
Isochronous distortion
<3% for all speeds
Carrier detection
Generation of alarm at 14 dB below the
adjusted receive nominal level
Hysteresis
3 dB
Insulation voltage
IEC 870-2-1 class 2.
(3)
1 kV
rms
/50 Hz/1 min
Impulse voltage
IEC 870-2-1 class 2.
2 kV
p
(1.2/50
s)
Fast transient bursts
IEC 870-2-1 level 3.
2 kV
p
Damped oscillatory waves
IEC 870-2-1 level 2.
1 kV
p
(3)
For waves applied between:
- Input terminals and power supply terminals.
- Input terminals and alarm relay terminals.
- Input terminals and ground terminals.