DSP Modem 2015 - Applied Systems Engineering Inc.

Modems
Bell-202/202T and V.23 Modems
Rack Mount
Box/Stand Alone
Applied Systems Engineering, Inc.’s DM series products are Bell-202/202T and V.23 modems designed for
operation over leased line communication circuits as commonly used in the electric power and pipeline SCADA
industries. These modems include commonly requested features such as 900Hz soft-carrier turnoff, LED indicators,
digital control over timing parameters (in millisecond increments), Push to talk (PTT) circuit, transmit levels
from 0 to -30 db, and input power from 5 to 160 VDC. Modems are available in a 19" rack configuration with a
16-slot custom backplane and redundant AC power supplies, or packaged in a stand-alone metal box. A “board
only” version is also available for manufacturers.
RACK MOUNT MODEM FEATURES
The rack mount chassis measures 19 inches wide by 5.25 (3U) inches high, and fits into standard EIA cabinets. The
chassis holds 16 single-channel modems and redundant power supplies. The modems are hot swappable.
The 16 Channel Modem Chassis contains slots for two standard 3U VME power supplies. The power supply has a
40-watt universal input (90 to 254VAC) with over voltage protection and continuous short circuit protection. The
power supply output is +5VDC at 8.0 Amps and does not require a minimum load to obtain regulation. The power
supply module contains a +5VDC adjustment pot accessible from the front panel for adjustment +/- 0.3 volts. The 16
Channel modem chassis can run on a single supply. The second power supply can be added to provide the user with a
higher mean time between failure. Power supplies are also hot swappable.
STAND-ALONE BELL 202/202T AND V.23 MODEM FEATURES
The Stand-alone modems are available in two formats: in a metal enclosure (Box) or with 3U VME faceplate.
The metal enclosure is 187 x 105 x 36 mm or 7.35 x 4.14 x 1.42". Flanges are provided at both ends for
mounting the equipment. The 3U VME mounting bracket has screw downs for standard VME chassis'.
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FIELD PROVEN SOLUTIONS
ASE has manufactured the Bell 202/202T and V.23 modems for over 20 years with over 8000 units in use worldwide.
Installation sites include electrical substations,
water processing plants and others.
www.ase-systems.com
Applied Systems Engineering, Inc.
a kalkitech company
SPECIFICATIONS FOR RACK-MOUNT AND STAND-ALONE MODEMS
ITEM
CHARACTERISTICS
DATA RATES
0-1200 bps
OPERATING MODE
Half or full duplex; 2 or 4 wire private line, Bell-202/V.23 jumper selectable
OPERATING FORMAT
Serial
LINE REQUIREMENTS
LINE IMPEDANCE
BELL 202 MODULATION
V.23 MODULATION
TRANSMITTER
Voice Grade, private lines
600 ohms, balanced
FSK: Mark-1200 Hz; Space-2200 Hz; Soft Carrier-900 Hz +/- 1%
FSK: Mark-1300 Hz; Space-2100 Hz; Soft Carrier-900 Hz +/- 1%
Output Level: 0 dBm, switch selectable to -30 dBm in 2 dBm increments
RTS/CTS Delay: 0 to 252 mS, switch selectable (4 mS increments )
900 Hz Soft Carrier option
Receiver Operating Range: 0 to -35 or -41 dBm
Receiver Squelch: 156 mS for 2 wire only
Carrier Detect On Delay: 2 to 30 mS (2mS increments)
RECEIVER
ELECTRICAL ISOLATION
Power Supply: 1800 Vac
Telco Connection: 1500 Vrms ( Primary to Secondary)
ENVIRONMENTAL
Operating Temperature: 0 - 70° C
PHYSICAL CHARACTERISTICS
Stand Alone (Box): 187x105x36mm or 7.35x4.14x1.42 inches
Rack mount / 3U VME:
19" Rack Mount is 5 1/4 " high with slots for 16 modems plus redundant power supplies
POWER
Stand Alone (Box/3U VME): 12-160 VDC @ 100mA
Rack mount: 5VDC @ 100mA per card
USER EQUIPMENT INTERFACE
25 Pin EIA Connector (RS232 C Compatible)
2 pin PTT output
RJ11 Jack ( Box and Rack-mount), Terminal Blocks also available on Rack-mount
Analog Loop Back Switch
TXD, RXD, RTS, CTS, CD and PWR
Storage Temperature -40 to 80° C
Humidity: 0 to 95% Relative Humidity (non-condensing)
TELCO INTERFACE
DIAGNOSTIC
FRONT PANEL LED DISPLAY
BELL 202/V.23 MODEMS- STAND-ALONE
Model
DM-FSK-I-B
DM-FSK-I-V
DM-FSK-I-M
Mounting Options
No enclosure, board only.
VME Mounting bracket for mounting in a 3U logic chassis
without backplane.
Requires access to rear of board for external power,
RS-232 and Telco connections.
Metal box enclosure
BELL 202/V.23 MODEMS-RACK-MOUNT
Model
Mounting Options
DM-FSK-X-V
SM-RACK-16
SM-RACK-PS
Input Power
Regulated 5 VDC or unregulated
12-160 VDC
Input Power
Single channel modem for use with SM-RACK-16 chassis
and backplane
19" VME Rack mount chassis with 5V logic power supply
holds 16 M-FSK-X-V modems
From SM-RACK-16 chassis backplane
Redundant 5V logic power supply
120 VAC
120 VAC
Please contact ASE directly or visit our website for pricing details. Quantity discounts are available.
Applied Systems Engineering, Inc.
a kalkitech company
1671 Dell Avenue, Suite 200, Campbell, CA 95008-6900 phone: (408) 364-0500 fax: (408) 364-0550
e-mail: sales@ase-systems.com www.ase-systems.com
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