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Data Sheet

4NSA

LF Interface Module, 4-Wire

The low frequency (LF) interface module is designed for the switching on of 4 call

stations in four-wire technology.

At a Glance:

• Switching-on of up to four call stations

• Call station monitoring from the control unit

• Monitoring of call station voltage

• LF monitoring function (special model)

• Establishing long-distance lines

• Sending/receiving level can be regulated

• Special functions (optional)

Fig. 4NSA (L- No. 2.300)

Date:

13.03.2009

Page:

1/4

Author:

Document-No.:

DB_4NSA_ 2300_01

Summary of content (4 pages)

PAGE 1
Data Sheet 4NSA LF Interface Module, 4-Wire The low frequency (LF) interface module is designed for the switching on of 4 call stations in four-wire technology. At a Glance: • Switching-on of up to four call stations • Call station monitoring from the control unit • Monitoring of call station voltage • LF monitoring function (special model) • Establishing long-distance lines • Sending/receiving level can be regulated • Special functions (optional) Fig. 4NSA (L- No. 2.300) Date: 13.03.
PAGE 2
Data Sheet 4NSA LF Interface Module, 4-Wire The principle functions of the 4NSA are illustrated in the following block diagram. 4NSA Satz Set 11 + - +5V -48V Sb Modem Sa S CODEC C S pa lr e l c h S st at e t l i l o e C La Lb + GND -5V t KS e O + n uN eT R r Satz Set 44 + - -48V O u L Sa Modem n Sb Lb + -48V g La CODEC C S a p lr e l c h S ts at e t il l o e BUS +0V + n Block diagram 4NSA The 4NSA has four independent sets.
PAGE 3
Data Sheet 4NSA LF Interface Module, 4-Wire The mode of operation is set in the configuration software ICS: - Call station operation mode: Master operation mode: Slave operation mode: expected No modem operation mode: One call station is expected as subscriber As counterpart a 4NSA as slave is expected As counterpart a 4NSA as master is The 4NSA only transmits LF signals A slide-in attachment on the 4NSA as well as a special call station are necessary in order to realize the LF monitoring function.
PAGE 4
Data Sheet 4NSA LF Interface Module, 4-Wire Technical Data: Operating Voltage: +/-5 V (control) Operational Current (+5 V): 200 mA Operational Current (-5 V): 4 mA Temperature Range: 0 C to 45 °C Date: Weight: 300 g Installation Height: 3HE Installation Width: 6TE 13.03.2009 Page: 4/4 Author: HS Document-No.