Model GDI 400 Series Modem

 
 
Models 400, 400F, 400NY, 404, 419, 496 Cards and Standalone
 
 
 
Features:
  • 1200 to 19,200 bps
  • Bell 202T Type (400 only)
  • Integral Power Supply
  • Model 170/179 Style Card
  • RS232 Interface
  • Temperature Hardened
  • 2 & 4 Wire Switchable 
  • Anti-Streaming Option
  • Rugged Metal Enclosure
  • Switch Selectable Timings
 
 
Description

The GDI Series 400 Modems are the most versatile models for private wire and Telco 3002 interconnect. There are 11 versions of standalones and card for different applications. Begin with the industry standard Model 400 at 1200 bps, add anti-streaming for the Model 400F/400NY and 2400 bps for the Model 404. Then raise the speed to 9600 or 19,200 bps for Models 496 and 419 respectively. They are temperature tested rugged modems designed for the transportation industry. Directly connected to traffic controllers or variable message signs, they communicate at 1200 bps over leased telephone lines or higher speeds via private wire interconnect. Both point-to-point and multi-drop, the GDI Series 400 modems offer data rates of 1200 to 19,200 bps. The internal fused power supply on the standalone model eliminates the common “Brick” external transformer.
 
   
Temperature Range -37 to + 74oC
Humidity 95% non-condensing
Modulation Frequency Shift Keying
Data Interface RS-232C compatible via DB9F for standalone and Model 400 for card 
  14,400; 12,000; 9600; 7200; 4800; 2400; 1200; 0-300 bps
Mechanical Standalone case 1.5”H X 5.”W x 8.5”D
Card Model 400 standard
   
   
Model Mark Hz Space Hz Soft Carrier Hz Data Rate
400 1200 2200 900 0 - 1200
400F 1200 2200 900 0 - 1200
400NY 1300 2100 900; 0 - 1800
404 2400 4400 1800 0 - 2400
496 11200 17600 7800 0 - 9600
419 19200 38400 13800 0 - 19200
 
 
Power Requirements
Standalone:
  • Voltage 90 to 130 VAC (Standard) 180 to 260 VAC (Optional)
  • Frequency 47 Hz to 63 Hz
  • Power 4 watts maximum
  • Optional DC operation 12 VDC
    		•
     
     
    Indicators
  • TXD Transmit Data
  • RXD Receive Data
  • RTS Request To Send
  • CTS Clear To Send
  • Carrier Detect Carrier Detect
  • Power Modem Ready
  • KOD KOD option enabled
  • RS422 RS422 option Enabled
    •  
    Timing (Switch Selectable)    
    Function  Model 400  All other Models 
    RTS—CTS  12mS + 2mS  6 or 12 mS + 2mS
    CAR Delay  8mS + 2mS  4 or 8 mS + 2mS
    Soft Carrier Off  10mS + 2mS 5 or 10 mS + 2mS
    Rcvr Squelch /td> 6.5mS + 2mS 3 or 6 mS + 1mS
    Anti-Streaming  None  Switchable on/off 
     
     
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