NB3000-Line-Hd User Manual 4.2
Audio Port Specification (Option A)
The Audio port has the following specification:
Feature
Specification
Protocol
Audio Line In/Out
Input impedance
44 k
Ω
, signal level 2 V
pp
Input bandwidth
100 Hz- 15 kHz
Input galvanic isolation to enclo-
sure
functional (max. 250 V
DC
)
Output impedance
100
Ω
, signal level 2 V
pp
Output bandwidth
300 Hz- 4 kHz
Output galvanic isolation to enclo-
sure
functional (max. 250 V
DC
)
Max. cable length
30 m
Cable shield
mandatory
Table 3.20.: Audio Port Specification
EP Pins
Signal
1 / 5
Input Channel
+
2 / 6
Input Channel
−
3 / 7
Output Channel
−
4 / 8
Output Channel
+
Table 3.21.: Pin Assignments of Audio Port Signals (EP1 / EP2)
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