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HP 13255
ASYNCHRONOUS MULTIPOINT INTERFACE MODULE
Manual Part No. 13255-91106
PRINTED
AUG-Ol-16
DATA TERMINAL
TECHNICAL INFORMATION
HEWLETT~PACKARD
Printed in U.S.A.
13255 13255-91106/02
Asynchronous MUltipoint Interface Module Rev AUG-01-76
1.0 INTRODUCTION.
The Asynchronous Multipoint Interface Module provides an RS232C compat-
ible, asynchronous data communications interface. Hardware is provided
(non RS232C) to permit multipoint daisy-chaining Of terminals. A pro-
grammable baud rate generator is included as well as two bytes of
program accessable switches. Refer to module section 13255-91086 for
parts lists for the US Modem Cable Assembly (02640-60131) and the Data
Comm Self Te~t Hood Assembly (02645-60002).
2.0 OPERATING PARAMETERS.
A summary of operating parameters for the Asynchronous Multipoint
Interface Module Is contained in tables 1.0 through 6.7.
Table 1.0 Physical Parameters
=================::=============================================================
part Size (L x W x D) I Weight I
Number Nomenclature +1-0.100 InChes I (Pounds)'
==-=======::== ::=:::::=::==::::=:=:::=::=::: ==============;======== =========
5061-2403 Modem Bypass Cable Ass'y NIA N/A
MIA N/A
12.9 x 4,,0 x 0.6 0.50
N/A N/A
N/A N/A
N/A N/A
N/A N/A
N/A N/A
N/A N/A
N/A N/A
1==============================================================================
Number of Backplane Slots Required: 1
::==============================================================================
HP 13255
ASYNCHRONOUS MULTIPOINT INTERFACE MODULE
Manual Part No. 13255-91106
PRINTED
AUG-01-76
------------------------------------- ----------------------------------,------
NOTICE
The information contained in this document is subject to change
Without notice.
HEWLETT-PACKARD MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS
MATERIAL, INCLUDING, BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PUFPOSE. Hewlett-Packard
snall not be liable for errors contained herein or for incidental or
Consequential damages in connection with the furnishing, performance,
or use of this material.
This document contains proprietary information which 15 protected by
Copyright. All rights are reserved. No part of this document may be
Photocopied or reproduced without the prior written consent Of Hewlett-
Packard Company.
--~-------------------------.----~--~~--------~------.----.---~~----------------
Copyright c 1976 by HEWLETT-PACKARD COMPANY
NOTE: This document 1s part of the 264XX DATA TERMINAL product
series Technical Information Package (HP 13255).
13255 13255-91106/02
Asyncnronous MUltipoint Interface Module Rev AUG-01-76
1.0 INTRODUCTION.
The Asynchronous Multipoint Interface Module provides an RS232C compat-
ible, asynchronous data communications interface. Hardware is provided
(non RS232C) to permit multipoint daisy-chaining of terminals. A pro-
grammable baud rate generator is included as well as two bytes ot
program accessable switches. Refer to module section 13255-91086 for
parts lists for the US Modem Cable Assembly (02640-60131) and the Data
Comm Self Test Hood Assembly (02645-60002).
2.0 OPERATING PARAMETERS.
A summary of operating parameters for the Asynchronous Multipoint
Interface Module is contained In tables 1.0 through 6.7.
Table 1.0 Physical Parameters
================================================================================
1==============================================================================
Number of Backplane Slots Required: 1
=:===============================;=========================-======:==============
13255 13255-91106/03
Asynchronous Multipoint Interface Module Pev AUG-Ot-16
Table 2.0 Reliability and Environmental Information
========================================:=======================================
~nvironmental: ( X ) HP Class B ( ) Other:
Restrictions: Type tested at product level
==============================================:===============================
Failure Rate: 1.816 (percent per 1000 hours)
================================================================================
Table 3.0 Power Supply and Clock Requirements - Measured
CAt +1-5\ Unless Otherwise Specified)
========================'=============================::::::::::=::z===:::::::==:
+5 Volt Supply +12 Volt Supply -12 Volt Supply +42 Volt Supply
@ 400 rnA ~ 150 mA ~ 10 mA mA
(An additional
200 rnA required
for 02640-60140
cable) NOT APPLICABLE
==============:======================= =======================================
115 volts ac 220 volts ac
~ A A
NOT APPLICABLE NOT APPLICABLE
==============================================================================
CloCk Frequency: 4.915 MHz +1-0.1%
===============:====z===========z=======z:==================s:==================
13255 13255-91106/04
Asynchronous Mult1point Interface Module Rev AUG-01-76
Table 4.0 Jumper Defin1tions
==z=============================================================================
Function
peA
Designat10n ---------------------.--------------.---------~------~ ------.
In Out
================ :==============:============== ==============================
IN! Interrupt on ATN2 Interrupt on ATN
PLb thru PLO Respond to an Interrupt poll NO Effect
on anyone of these bus data
bits
A4,All,A10,A9 Address Bit is a "0" in the Address Bit is a "1" in the
Module Address Module Address
-12 connect -12V to P2, Pin N NO Effect
2SB Transmit and receive Char- Transmit and receive char-
acters framed with 1 start acters framed with 1 start
and 1 stop bit and 2 stop bits
=;==============================================================================
13255 13255-91106/05
Asynchronous Multipoint Interface Module Rev AUG-01-76
Table 5.0 Connector Information
=====================================================================:==========
Connector Signal Signal
and PIn NO. Name Description
===========:=== ..
Pl, PIn 1
= ~--- .. +5V - ==============================================
---
~- ....
--~-~-~~-~~~-~ .... -- ...
+5 Volt Power Supply
-2 GND Ground Common Return (power and Signal)
-3 SIS eLK 4.915 MHz System Clock
-4 -12V -12 Volt Power Supply
-5 AD ORO Negative True, Address Bit 0
ADORI ~egative True, Address Bit 1
-1 Not Used
-8 ADDR3 Negative True, Address Bit 3
-9 ADOR4 Negative True, Address Bit 4
-10 ADOR5 Negative True, Address Bit 5
-11 ADDR6 Negative True, Address Bit 6
-t2 AODR7 Negative True, Address Bit 7
-13 ADOR8 Negative True, Address Bit 8
-14 ADDR9 Negative True, Address Bit 9
-15 ADDR10 Negative True, Address Bit 10
-16 ADDRll Negative True, Address Bit 11
-11 }
}
-18 }
} Not Used
-19 }
}
-20 }
t
-21 110 I Negative True, Input Output/Memory
I
-22 GND I Ground Common Return (power and Signal)
=========================================:===:=======:==========================
13255 13255-91106/0{)
Asyncnronous Mult1point Interface Module Hev AUG-Ol-7{)
Table 5.0 Connector Information (Cont