2070-6B - Western Pacific Signal, LLC

GDI 2070-6B Modem

Features
• Two 9600 Baud Modems
• Front Panel Switches for Full/Half Duplex for each Modem
• Each Modem section can be individually enabled/disabled from front Panel switches
• The entire Modem can be powered down for live insertion/removal
• 170 compatible M14 connectors on the front panel (C2 and C20)
• Front Panel mounted status indicators
• Compatible with the GDI 496 Modems
• Switch selectable Anti-streaming
• All Line Drivers and Receivers are mounted in sockets

Description
The GDI Model 2070-6B Modem is designed to plug into the H1 slot of the 2070 Controller and meets or exceeds the May 1996 TEES from CALTRANS. This Modem consists of two complete 9600 baud Modems in one module. The front Panel has two 170 type M14 Connectors for easy access. The pin out is exactly the Same as the C2 and C20 connectors on the 170 Controller. The front panel Enable/disable switches allow the EIA-232 ports to be used without interference from the Modem.

Specifications - General

Physical:	Plugs into the H1 slot of the 2070 Controller
Connector Pin-Out:	Same as the pin-out for the 170 Controller for the C2 and C20 connectors
Power Requirements:	+5V, +12V, -12V from 2070 Controller
Environmental:	Temperature: -37 to +74 degrees C Humidity: 95% (non-condensing)

Specifications - Technical

Data Rate and Format: 0 - 9600 baud Serial Asynchronous

Modulation Type and Frequencies: Phase Coherent FSK
Mark: 11.2 KHz
Space: 17.6 KHz
Soft Carrier: 7.8 KHz
Frequency Tolerance: ± 1%

Line Interface: Private Metallic Wire
Maximum Distance: 10 to 20 miles
Characteristic Impedance: 600 Ohms

Receiver Characteristics: Dynamic Range: +3 dbm to -48 dbm
Carrier detect Threshold: -42 ±3 dbm
Carrier Detect Hysteresis: ~3dB
Demodulator Distortion: <10% peak
(9600 bps, -40 dbm, 1:1 data pattern)
Receiver Frequecny Tolerance: ± 25Hz
(for -40 dBm)

Transmit Level: -8dbm to 0dbm continuously adjustable
Factory setting: 0dbm (600 Ohms)

Serial Interface: Front Panel Connectors: EIA-232C
2070 Interface: EIA-422

Indicators: Transmit Data: TX
Receive Data: RX
Carrier Detect: CD
(for each Modem)

Front Panel Switches: Full/Half Duplex
Enable/Disable
Power ON/OFF

On Board Switches: Anti-streaming: On/Off
Soft-Carrier Turnoff time: 5/10 ±2msec
Local Echo Enable/Disable

Timings: RTS-CTS: 12 ± 2 msec
Carrier Delay: 8 ± 2 msec
Receiver Squelch: 6.5 ± 2 mse

2070-6B Manual

Data Rate and Format:	0 - 9600 baud Serial Asynchronous
Modulation Type and Frequencies:	Phase Coherent FSK Mark: 11.2 KHz Space: 17.6 KHz Soft Carrier: 7.8 KHz Frequency Tolerance: ± 1%
Line Interface:	Private Metallic Wire Maximum Distance: 10 to 20 miles Characteristic Impedance: 600 Ohms
Receiver Characteristics:	Dynamic Range: +3 dbm to -48 dbm Carrier detect Threshold: -42 ±3 dbm Carrier Detect Hysteresis: ~3dB Demodulator Distortion: <10% peak (9600 bps, -40 dbm, 1:1 data pattern) Receiver Frequecny Tolerance: ± 25Hz (for -40 dBm)
Transmit Level:	-8dbm to 0dbm continuously adjustable Factory setting: 0dbm (600 Ohms)
Serial Interface:	Front Panel Connectors: EIA-232C 2070 Interface: EIA-422
Indicators:	Transmit Data: TX Receive Data: RX Carrier Detect: CD (for each Modem)
Front Panel Switches:	Full/Half Duplex Enable/Disable Power ON/OFF
On Board Switches:	Anti-streaming: On/Off Soft-Carrier Turnoff time: 5/10 ±2msec Local Echo Enable/Disable
Timings:	RTS-CTS: 12 ± 2 msec Carrier Delay: 8 ± 2 msec Receiver Squelch: 6.5 ± 2 mse