Summary of Contents for GDI COMMUNICATIONS 2070-6A
- Page 1 2070-6A Manual 2070-6A Manual Dual 1200 baud Modem For The 2070 Controller GDI 2070-6A MANUAL This Manual covers Modems with the Serial numbers……………D700000 and up. 2070-6Asm v2 Standard Manual A00886-A.doc...
- Page 2 2070-6A Manual GDI 2070-6A Manual This Manual covers Modems with the Serial numbers……………D700000 and up. GDI COMMUNICATIONS, LLC 280 Interstate 80 Exit 1 PO Box 1330 Verdi, NV 89439 Phone (775) 345-8000 Fax (775) 345-8010 2070-6Asm v2 Standard Manual A00886-A.doc...
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Page 3: Table Of Contents
2070-6A Manual TABLE OF CONTENTS General Description ..................4 Specifications ....................4 Installation....................... 6 SWITCH 3&7 POSITION TABLE ............7 FUNCTION....................7 POS......................8 MAINTENANCE AND ADJUSTMENTS ............ 9 ADJUSTMENTS .................... 9 AMPLITUDE ADJUSTMENT ..............10 FREQUENCY ADJUSTMENT ..............10 SYMMETRY .................... -
Page 4: General Description
Separate switches also allow the timings on the handshake and modem control The front panel of the 2070-6A also has signals to be cut in half for faster Full Duplex/Half Duplex switches for communications. - Page 5 Data Rate……..0-1200 baud. (RXD) +5 VDC Modulation…….Phase Coherent FSK. Audio Out DC Gnd #1 Data Format…Asynchronous, serial by 96 pin connector pin out for the 2070-6A Line interface…..Private Metallic wire A2-5 Pin Assignments 600 Ohm Mark Frequency……1200 Hz +/- 1%. SP1-TXD+ SP6TXD+...
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Page 6: Installation
+5VDC DC Gnd #1 DC Gnd #1 DC Gnd #1 Installation The 2070-6A has 5 front panel switches, 2 eight position dip switches for configuring the Modem, and a 5 position A1 Pin Assignments dipswitch for configuring the polarity of the backplane signals. -
Page 7: Switch 3&7 Position Table
2070-6A Manual The switch labeled “ON” “OFF” is used to turn power on and off to the 2070-6A If 2 wire half duplex operation is Module. This makes it safer to unplug required, switch position 5 should be and insert the 2070-6A from the 2070 turned ON so the modem won’t hear its... -
Page 8: Pos
2-WIRE HALF DUPLEX systems carry the back plane signals. This switch will the transmitted data from the Master and allow the 2070-6A to mate with any 2070 Local Controllers on the same pair. All Controller. of the AUDIO OUTs of the system are connected together. -
Page 9: Maintenance And Adjustments
2-wire half duplex system. ADJUSTMENTS There are 3 potentiometers for each HOW FAR WILL THE SIGNAL GO? section of the 2070-6A modem for making adjustments. The potentiometers This is an important question in higher are all located on the topside of the PC speed FSK Modem operation. -
Page 10: Amplitude Adjustment
0 dB but can be adjusted to +10 need to be able to generate Mark and dBm. Space signals to the 2070-6A to check 3) Symmetry. This adjustment varies the the frequency. slicing level of the demodulator. If... - Page 11 The isolated signals on the C2 and C20 connectors should be measured The chart below will help you find the referenced to pin “N” the isolated problem if you decide to fix the 2070-6A yourself. PROBLEM CAUSE Both sections dead Power coming into the board or the relays could have a problem.
- Page 12 2070-6A Manual 2070-6Asm v2 Standard Manual A00886-A.doc...
- Page 13 2070-6A Manual GDI COMMUNICATIONS, LLC 280 I-80 WEST EXIT 1 PO BOX 1330 VERDI, NEVADA 89439 TELEPHONE: 775-345-8000 FAX: 775-345-8010 2070-6Asm v2 Standard Manual A00886-A.doc...