V23 Modem

DM-16 - V.23 Modem

The DM-16 modem is a V.23, Frequency Shift Keyed (FSK) modem designed for voice frequency (VF) circuits and copper cable pairs for data rates of up to 1,200 Baud. This modem can operate over up to 36km of unloaded copper pairs or a 2/4 wire CCITT standard VF channel with frequency range of 300-3,400 Hz

see other V23 modem


DM-16 - V.23 Modem
NO straps -        
Software Configured

Configurable through Windows based software

The software configuration utility allows the user to:

  • modify and create new DM-16 V.23 modem configurations
  • save configurations to files on the PC
  • download configurations to DM-16 V.23 modems
  • load configurations from files on the PC
  • upload configurations from DM-16 V.23 modems
  • examine the firmware revisions of the DM-16 V.23 modems

 


DM-16 - V.23 Modem

The DM-16 modem is a V.23, Frequency Shift Keyed (FSK) modem designed for voice frequency (VF) circuits and copper cable pairs for data rates of up to 1,200 Baud. This modem can operate over up to 36km of unloaded copper pairs or a 2/4 wire CCITT standard VF channel with frequency range of 300-3,400 Hz

Operation

The V.23 modem is designed for use in a single EuroCard 19'' sub-rack system. This rack can accommodate 17 V.23 modems as well as 2 redundant power supplies for the system. The rear communications interface consists of one DB-9 female connector for serial connection to each modem module. The 2/4-wire interface is provided for on an RJ-11 4/4 connector.


Features

 
2 and 4 Wire Operation
DM-16 configured in V.23 mode
Operates as point-to-point and multi-
drop configuration (party line)
19" Rack or mounted or stand-alone

Configuration

Configuration is achieved by means of the DB-9 (female) serial interface on the front panel of the modem using the user-friendly Windows based software configuration utility. When a PC is plugged into this port, (and RTS is asserted) the modem will enter configuration mode automatically. Once the PC plug is removed, the modem will restart. This prevents the necessity to withdraw each modem from the rack for configuration.

This configuration utility runs under Windows 95™, Windows 98™, Windows NT™, Windows 2000™, Windows XP™.

The software configuration utility allows the user to:

The following parameters are available for configuration using the software utility:


Specifications

 

 

Number of Serial Ports

1 Channel

Type of Interface

RS 232 CCITT V.28

Data Transfer Rate

1200 Baud

Flow Control

RTS, CTS, DCD

Type of Connection

Standard 9 pin serial connection

 

 

Number of channels

1 or 2 Channels

Isolation

5 kV through matching transformer

Termination

600 Ohm, 10 kOhm ( high impedance)

Transmitter output range

- 4 to – 20 dBm

Minimum output power

-20 dBm

Receiver Sensitivity

Four ranges, 0 to -15dBm, -5 to -20dBm, -15 to -25 dBm, and -20 to -40dBm

Test facilities

4 x 2mm test jacks and line disconnect switches

 

 

Input Range

+12 Vdc and –12 Vdc

Power Consumption

50 mA @ +12 Vdc & 8 mA at –12Vdc

 

 

Process Indications

1 x Power On LED Indication

 

4 x DCE Interface LED Indication for TXD, CTS, RXD, DCD

 

 

Radiated Emission

EN 55 022 Class A (formerly CISPR –022)

 

 

Protection Class

IP 00 (IP 20 in rack)

Ambient temperature

 

· Continuous Operation

-10° to +60° C

· Transportation and storage

-40° to +70° C

Relative Humidity

95%

 

 

Dimensions (W * H * D)

5 hp x 3U (25.4 x 133.3 x 170 mm)

Mass

Approx. 160 grams

 


Related 202T pages


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