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PDF HP12792B Data sheet ( Hoja de datos )
| Número de pieza | HP12792B | |
| Descripción | (HP12792B/C) 8-Channel Asynchronous Multiplexer Subsystem | |
| Fabricantes | HP | |
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HP 12792B/C 8ĆChannel Asynchronous
Multiplexer Subsystem
Configuration Guide
Manual Part No. 5955Ć8868
E0693
Software Technology Division
11000 Wolfe Road
Cupertino, CA 95014Ć9804
Printed in U.S.A. June 1993
Second Edition
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1 page  
Figure 3Ć1
Figure 3Ć2
Figure 3Ć3
Figure 3Ć4
Figure 3Ć5
List of Illustrations
Relocating HPĆSupplied Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing PVM00 Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Table Entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DRT Entries for the MUX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interrupt Table Entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3Ć2
3Ć3
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Table 1Ć1
Tables
Software Modules for HP 12792B/C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2Ć1
6
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5 Page 
Other HP Subsystems
Support of nonĆHP terminals and devices by the HP 12792B/C Multiplexer Subsystem does not
imply support of the devices by other HP systems or subsystems communicating with these devices
through the HP 12792B/C. Consult the specific subsystem documentation for devices supported by
that subsystem.
Modems
The MUX passively supports asynchronous, full duplex modems. Passive support means the
MUX does not recognize or supply any modem control or status lines. The RSĆ232ĆC connectors
on the HP 12828A Multiplexer Panel have modem clear to send" connected back to request to
send" and carrier detect" wired back to data terminal ready". (Data set ready" is pulled to
+12v through a 1KĆohm resistor for those terminals that require it.) Use of the HP 12828A or
connectors similar to these allow the passive support of modems. The user should be aware that
line loss" or other modem not ready" problems cannot be detected by the MUX or user
software through the MUX.
When using modems be aware that if the modem line (with auto answer) is disconnected, no
provision is available to detect the condition. If the user was logged on under an RTEĆIVB or
RTEĆ6/VM session and the line is disconnected before the user logs off, anyone dialing in to that
port will be reĆconnected to the session in progress at the time of the previous disconnect.
If the user wishes to have full modem capability, the HP 37214A Systems Modem subsystem
should be used in place of the HP 12828A Multiplexer Panel. The systems modem subsystem
consists of the HP 37214A Card Cage having eight slots to hold a modem controller card and any
combination of up to seven of these optional cards:
S HP 37213A Modem Card, one for each telephone line,
S HP 37215A External Modem Card, for userĆsupplied modems, or
S HP 37216A Terminal Interface Card, for local terminals or printers.
The HP 37213A Modem Card is compatible with Bell 212 and 103 modems. A modem control
card is supplied with the HP 37214A card cage and must always be used when communicating via
telephones lines. Slot 7 (counting from zero) of the card cage is reserved for the modem control
card. Connect the control card to port 7 of the multiplexer card. Refer to the Systems Modem
Installation and Reference Manual, part number 37214Ć90000, for more information.
System Planning 2Ć5
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| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet HP12792B.PDF ] | |
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