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RAD STM-8 STM-16HS STM-24 STM-24HS
 8 16 24 Channel Statistical Multiplexers

Call us for Pre-sales and discount pricing

  301-924-7400 Support

RAD STM-8 STM-16HS STM-24 STM-24HS
8 16 24 Channel Statistical Multiplexers

FEATURES

SPECIFICATIONS

Subchannels

8 for STM-8
16 for STM-16
24 for STM-24

Transmission Format

Asynchronous

Data Rate

75 bps to 19.2 kbps

Interface

V.24/RS-232

Configuration

DCE

Connectors

8-pin, RJ-45 sockets

Control signals

RTS, CTS, DTR and DCD

Character Length

5, 6, 7 or 8 data bits

Stop Bits

1, 1.5 or 2

Parity

Odd, even or none

Flow Control

Hard: DTR/CTS for end-to-end (DTE–DTE) RTS/DCD for channel to terminal (DCE–DTE)

Soft: X-ON, X-OFF selectable from DC1–DC4 and 91H–94H

Control signal: RTS/DCD passed end-to-end

Command Port

Commands can be entered through any channel

Composite Channel

Synchronous data rate: Up to 64 kbps, externally clocked

Interfaces:

V.24/RS-232 via 25-pin male connector
V.35 via 34-pin female connector
X.21 via 15-pin female connector RS-530 via 25-pin female connector

Configuration: DTE

Protocol: Frame structure variant of HDLC framing protocol defined by ITU X.25 level 2

Note: STM protocol used to connect to RAD packet switching products is supported by STM EPROM version 2.0 or higher.

Indicators

! POWER (green): ON when unit is powered

! MAIN (yellow): ON when data is transferred through the sync port

! Channel activity (yellow): ON when data is transmitted or received

! SYNC (green): ON when synchronization is achieved with opposite device

! ERROR (red): ON when a hardware problem occurs or when the STM unit is connected to an incompatible device

! OVF (red): ON when the flow control mechanism is malfunctioning and/or when the flow of data in the channels is not well controlled

! TEST (red): ON when the device is in configuration mode

Controls

Reset (Front panel)
Power ON/OFF (rear panel)

Power

115 or 230 VAC 10% 47-63 Hz, 10W

Physical

STM-8

Height: 4.4 cm / 1.7 in
Width: 21.6 cm / 8.5 in
Depth: 24.6 cm / 9.5 in
Weight: 1.6 kg / 3.5 lb

STM-16, STM-24

Height: 4.7 cm / 1.7 in
Width: 43.2 cm / 17.2 in
Depth: 30.0 cm / 11.6 in
Weight: 3.2 kg / 7.1 lb

Environment

Temperature: 0–50C / 32–122F
Humidity: Up to 90%, non-condensing

 

ORDERING

STM-8/115
STM-8/230

STM-16/115
STM-16/230
STM-16/HS/115

STM-24/115
STM-24/115/HS
STM-24/230
STM-24/230/HS
STM-24/R
 
APPLICATIONS

 

RAD Products

For discount pricing on RAD Data Communications
email us at sales@data-connect.com
or call 301-924-7400


     

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Sales Ext 17   Support Ext 25

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