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4.
DATA TRANSFER OVER THE IEC INTERFACE
4.1. INTRODUCTION
The digital interface of the Type 2313 is designed according to the standard IEC 625-1
"Interface for Programmable Measuring Apparatus Byte-Serial Bit Parallel". Since the
only
significant
difference
between
this
and
IEEE
Standard
488 - 1978/ ANSI
MC1 .1 - 1975 is the type of connector used, compatibility with these standards is only
a question of which connecting cable is used. Connection of the Type 2313 to an IEC
625-1 interface bus system is made from the IEC BUS connector on the rear panel of
the Type 2313 using cable AO 0194. Connection to an IEEE/ ANSI interface bus system
is made from the same connector using cable AO 0194 and adaptor AO 0195. Connec-
tion to an earlier B & K instrument fitted with a female, slide-lock connector, is made
using cable AO 0184. For further details of instrument interconnections, refer to the
B & K publication "INTERFACING BRUEL & KJJER INSTRUMENTS".
It is important to note that although the Type 2313 interface is designed according to
the IEC standard, absolute compatibility with IEC or IEEE/ ANSI interfaces designed by
other manufacturers cannot be unconditionally guaranteed, since differences can occur
within the limits of the specifications. Any problems encountered, however, will be of a
software rather than a hardware nature. Where compatibility is in doubt, contact our
local representative for details.
4.2. IEC FUNCTIONS IMPLEMENTED
The interface of the Type 2313 implements the following functions, as specified by the
IEC standard. The clauses referred to are the relevant sections of the IEC publication
specifying the functions. The equivalent sections in the IEEE/ ANSI standard are given
in parentheses.
Clause 6,
Source Handshake (SH) Interface Function, (Section 2,3)
SH 1 -
complete capability
Clause 7,
Acceptor Handshake (AH) Interface Function, (Section 2,4)
AH 1 -
complete capability
Clause 8,
Talker (T) Interface Function, (Section 2,5)
T6
-
basic talker, serial poll capability, unaddress if M LA
Clause 9,
Listener (L) Interface Function, (Section 2,6)
L3
-
complete capability
Clause 10, Service Request (SR) Interface Function, (Section 2,7)
SR 1 -
complete capability
Clause 11, Remote Local (RL) Interface Function, (Section 2,.8)
RL 1 -
complete capability
Clause 12, Parallel Poll (PP) Interface Function, (Section 2,9)
PP 1 -
remote configuration
Clause 13, Device Clear Interface (DC) Function, (Section 2, 10)
DC 1 -
complete capability
Clause 15, Controller Interface (C) Function, (Section 2, 12)
C 1 -
system controller
C 2 -
send interface clear (IFC) and take charge
C 3 -
send remote enable (REN)
21
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