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2070-6A Manual

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2070-6Asm v2 Standard Manual A00886-A.doc

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 ................................................................................................ 10
TROUBLESHOOTING................................................................................ 10

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Содержание 2070-6A

Страница 1: ...2070 6A Manual 1 2070 6Asm v2 Standard Manual A00886 A doc 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 ...

Страница 2: ... v2 Standard Manual A00886 A doc 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 ...

Страница 3: ...0886 A doc 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 10 TROUBLESHOOTING 10 ...

Страница 4: ... 6B Modem or the 2070 Controller from being harmed during insertion or being unplugged Six LEDs are also located on the front panel 3 for each channel They include Transmit Data TX Receive Data RX and Carrier Detect CD All of the RS 232 signals in the C2S and C20S connectors are optically isolated from the controller signals The 5V supply and Ground in the C2S and C20S connectors are also isolated...

Страница 5: ...eaming time out 5 sec C2 and C20 Pinout Pin Function Pin Function A Audio In J RTS B Audio In K Data In TXD C Audio Out L Data Out RXD D 5 VDC M CTS E Audio Out N DC Gnd 1 F NA P NA H CD R NA 96 pin connector pin out for the 2070 6A A2 5 Pin Assignments Pin A B C 1 SP1 TXD SP6TXD SP5TXD 2 SP1 TXD SP6TXD SP5TXD 3 SP1 RXD SP6RXD SP5TXC 4 SP1 RXD SP6RXD SP5TXC 5 SP1 RTS SP1 TXC O SP5RXD 6 SP1 RTS SP1...

Страница 6: ...12V Serial 12V Serial 5VDC STBY 29 5VDC 5VDC 5VDC 30 DC Gnd 1 DC Gnd 1 DC Gnd 1 31 NA NA NA 32 NA NA NA Installation The 2070 6A has 5 front panel switches 2 eight position dip switches for configuring the Modem and a 5 position dipswitch for configuring the polarity of the backplane signals There is 1 dip switch for each section of the Modem SW3 is for Modem A which uses the C2S connector SW7 is ...

Страница 7: ...reaming is wanted turn switch 8 ON If 2 wire half duplex operation is required switch position 5 should be turned ON so the modem won t hear its own transmissions Switch positions 1 and 2 are normally provided by the front panel toggle switches and should be left OFF so they don t conflict with the toggle switches Turning switch positions 3 4 6 and 7 ON will cut the normal times for these function...

Страница 8: ...he Master connects to all of the Local Controllers AUDIO INs All of the Local Controllers AUDIO OUTs are connect together and returned to the Master AUDIO IN 2 WIRE HALF DUPLEX systems carry the transmitted data from the Master and Local Controllers on the same pair All of the AUDIO OUTs of the system are connected together With a 4 wire full duplex system you have to be concerned with the Local C...

Страница 9: ... expect about 5 6 miles on 22 AWG wire With 19 AWG wire can go about 25 further If more range is required turning the transmitter output amplitude potentiometer clockwise can increase the transmitter output These POTS are labeled AMP A for channel A and AMP B for channel B An extra 10 dBm of output power is available This will give you another 1 5 to 2 miles You may have more crosstalk problems in...

Страница 10: ...meter should be 0 dB or 0 775 V The Oscilloscope s pattern should be about 2 2 V p p FREQUENCY ADJUSTMENT Use the same load as above and connect a frequency counter across the Load You need to be able to generate Mark and Space signals to the 2070 6A to check the frequency Send a Space signal to the 2070 6A section being checked The frequency indicated should be 2200 Hz 1 Send a Mark signal to the...

Страница 11: ...ont panel ON OFF switch and the connectors are included in this group The chart below will help you find the 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 Check ON OFF Switch or connectors and cables Measure power at test points Modem is not generating Mark and Space Freq No RTS or TXD coming from T...

Страница 12: ...2070 6A Manual 12 2070 6Asm v2 Standard Manual A00886 A doc ...

Страница 13: ...2070 6A Manual 13 2070 6Asm v2 Standard Manual A00886 A doc GDI COMMUNICATIONS LLC 280 I 80 WEST EXIT 1 PO BOX 1330 VERDI NEVADA 89439 TELEPHONE 775 345 8000 FAX 775 345 8010 ...

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