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Optional Equipment Installation
108
025-9416
DIAL CLICK DECODER
The dual dial click decoder option (Part No. 702-9119) enables the terminal to process numbers
dialed by rotary telephones. Dial
clicks
are distinctly different from dial
pulses
. The Model 640
decodes dial pulses without the optional dual dial click decoder board.
Installation
To install this option onto a dual trunk card (Part No. 702-9361 or 702-9488) of the Model 640,
proceed as follows:
CAUTION
Please exercise electro-static discharge (ESD) precautions when handling all parts.
q
1.
Power-down the paging terminal.
q
2.
Remove the top cover.
q
3.
Unscrew the card guide from the back of the chassis for the dual trunk that the dial
click decoder is to be installed onto. Pull the dual trunk from its connectors.
q
4.
Mount the supplied standoff near the center of the board as shown in Figure 58.
J5
P2
P1
standoff
mount
Dial Click Board
(Part No. 702-9119)
Dual Trunk Card
(Part No. 702-9361)
Figure 58. Dial Click Board Installation
q
5.
Install the dual dial click board into the 10-pin female connector (J5) on the dual
trunk. The card should extend toward the rear of the dual trunk board. Bolt the board
to the standoff installed in Step 4.
q
6.
Plug the supplied extender card into the connectors on the paging terminal peripheral
board where the dual trunk was installed. Then plug the dual trunk into the extender
card. This enables easy access to the dial click pots for adjustment.
Note:
If an extender card is not available and trunk A or B needs adjustment, remove the
other dual trunk card (C/D) to perform the procedure.
Summary of Contents for 640 DAPT XTRA
Page 2: ......
Page 6: ...Statements vi 025 9416...
Page 20: ...Introduction 8 025 9416...
Page 26: ...Specifications 14 025 9416...
Page 96: ...Installation 84 025 9416...
Page 126: ...Optional Equipment Installation 114 025 9416...
Page 134: ...Voice Prompts 122 025 9416...
Page 174: ...Parts Lists and Schematics 162 025 9416 Schematic...
Page 175: ...Parts Lists and Schematics 025 9416 163...
Page 176: ...Parts Lists and Schematics 164 025 9416...
Page 177: ...Parts Lists and Schematics 025 9416 165...
Page 178: ...Parts Lists and Schematics 166 025 9416...
Page 179: ...Parts Lists and Schematics 025 9416 167...
Page 180: ...Parts Lists and Schematics 168 025 9416...
Page 181: ...Parts Lists and Schematics 025 9416 169...
Page 182: ...Parts Lists and Schematics 170 025 9416 Silkscreen...
Page 185: ...Parts Lists and Schematics 025 9416 173 Schematic...
Page 186: ...Parts Lists and Schematics 174 025 9416...
Page 187: ...Parts Lists and Schematics 025 9416 175...
Page 188: ...Parts Lists and Schematics 176 025 9416...
Page 189: ...Parts Lists and Schematics 025 9416 177...
Page 190: ...Parts Lists and Schematics 178 025 9416 Silkscreen...
Page 193: ...Parts Lists and Schematics 025 9416 181 Schematic...
Page 194: ...Parts Lists and Schematics 182 025 9416...
Page 195: ...Parts Lists and Schematics 025 9416 183...
Page 196: ...Parts Lists and Schematics 184 025 9416 Silkscreen...
Page 198: ...Parts Lists and Schematics 186 025 9416 RAM Disk 702 9386B ROM Disk 702 9389B...
Page 199: ...Parts Lists and Schematics 025 9416 187 TNPP Interface 702 9362C 2...
Page 200: ...Parts Lists and Schematics 188 025 9416 Terminal Block Adapter 702 9470B...
Page 201: ...Parts Lists and Schematics 025 9416 189 CONFIGURATION DIAGRAMS Dual Trunk Telco DID 024 0076A...
Page 202: ...Parts Lists and Schematics 190 025 9416 Dual Trunk Telco End to End 024 0077A...
Page 203: ...Parts Lists and Schematics 025 9416 191 Dual Trunk Telco E M 024 0078A...
Page 204: ...Parts Lists and Schematics 192 025 9416 Dual Trunk Telco Ground Start 024 0079A...
Page 210: ...025 9416...