ZIV MAS-2, User Manual, Page: 7 / 39

Communication solutions for power utilities
1U SHELF TYPE MAS-2
WITH ASYNCHRONOUS PROGRAMMABLE MODEM MAFP - Rev. 9 (January 2018)
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Balance >60 dB between 420 and 3800 Hz
Insulation voltage
IEC 870-2-1 class 2.
(2)
1 kV
rms
/50 Hz/1 min
Impulse voltage IEC 870-2-1 class 2.
(2)
2 kV
p
(1.2/50

s)
Fast transient bursts IEC 870-2-1 level 3.
(2)
2 kV
p
Damped oscillatory waves IEC 870-2-1 level 2.
(2)
1 kV
p
1.2.3 Receiver
Sensitivity

43 to 0 dBm.
Adjustment in three ranges
Nominal selectivity
for an attenuation of 40 dB
- At 50 Bd/

30 Hz: 192 Hz
- At 100 Bd/

60 Hz: 380 Hz
- At 200 Bd/

120 Hz: 784 Hz
- At 200 Bd/

90 Hz: 560 Hz
- At 200 Bd/

60 Hz: 381 Hz
- At 600 Bd/

180 Hz: 1600 Hz
- At 1200 Bd/

400 Hz: 1472 Hz or 1902 Hz,
depending on whether the modem works in
superimposed band or not.
At 2400 Bd/

800 Hz: 3192 Hz
Figure 3 to Figure 11 show, for each speed
and as an example, the response curve of the
transmission and reception filters at a
determined frequency
(2)
For waves applied between:
- Output terminals and power supply terminals.
- Output terminals and alarm relay terminals.
- Output terminals and ground terminals.