GDI SM2400 Series 2400 bps Dialup Modem
GDI Smart Modem SM2400 SM2400 (170
Plug-in) SM2400SA (standalone)
GDI SM2400 Series 2400 bps
Dialup Modem
1-301-924-7400 ext. 17
Features
* Standard AT Command Set
* RS232 Interface
* Call Monitor Speaker
* Error Correction / Data Compression
* Integral Power Supply
* Rugged Metal Enclosure
* Wide Operating Temperature Range 37 to +74oC
* Standalone or 170 Plug-in Card
Description
The GDI Smart Modem SM2400 is an AT command
set compatible dial-up modem. This modem has been designed specifically for the
demands of the traffic industry. The GDI Smart Modem SM2400 can be used to
communicate with traffic controllers, variable message signs, dial-up to the web
or most any other dial-up application that requires
communications over the public switched network.
The GDI Smart Modem SM2400 offers 3 data rates from 300 to 2400 bps. The GDI
Smart Modem SM2400 is AT command set compatible with auto-dial, auto-answer,
and auto-speed detect. The GDI Smart Modem is compatible with the GDI Smart
Modem SM2400 dial-up modem. The internal fused power supply eliminates the
common
brick external power supply. The unit is also available in a 170 Plug-in form
factor.
General Specifications
Modulation
Quadrature Amplitude Modulation FSK and DPSK
Serial Interface
RS232C compatible, Asynchronous 7 data bits with any parity type, 1 or stop
bits, or 8 data bits with Mark or parity, 1 or 2 stop bits
Data Rates 2400, 1200, 300 bps Automatic selection for highest error free rate
Compatibility Bell 103, Bell 212A, V.22, V.22 bis,
Modes
Asynchronous full or half duplex
Automatic/manual call originate and answer
PC Compatible Serial Plug and Play
Data & Line Interfaces
Data RS232C and RS485 via DB-9S
Phone handset RJ11
Phone line RJ11
Telephone Line Interfaces
FCC compliant Part 68 and Part 15
Line Interface RJ11, 600 ohms, Public
Switched Network
Ring Equivalent 1 Bel
Return Loss Better than 14dB from 200 to 4000 Hz
Dialing Pulse and Tone
DTMF Duration and spacing 50 to 255 ms
Receiver Performance
Signal to Noise Ratio -10 dB
Dynamic Range -10 dBm to 45 dBm
Indicators
SD, RD, OH, CD,AA and HS
Receiver Carrier Detect
NVRAM Allows storage of two user profiles and four 36 digit dial strings. Eliminates switches and jumpers. Power Requirements SM2400SA Voltage 90 to 130 VAC (Standard) 180 to 260 VAC (optional) Frequency 60 Hz +/- 3 Hz Power 4 watts maximum SM2400 Voltage +12 and 12 VDC +/- 5% Power 200 ma Mechanical SM2400SA Size 1.5" H x 5.5" W x 8.5" D Weight 2 lbs Environmental Temperature Range -37 to 74oC Humidity 5 to 95% non-condensing Models:
Off-to-On Threshold -43 dBm
On-to-Off Threshold -48 dBm
Hysteresis Greater than 2 dB
Transmit and Receive Frequencies
Data Carrier 1800 +/- 0.5 Hz
Calling Tone 1300 +/- 10 Hz
Answer Tone 2100 +/- 15 Hz
Receive Frequency +/- 14 Hz
Transmit Level Fixed at 11 +/- 2 dBm
SM2400 (170 Plug-in)
SM2400SA (standalone)