LumaSense Technologies INNOVA 1309 - Manual (Page 35)

Chapter 4
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BE1285-15 1309 Multipoint Sampler LumaSense Technologies A/S
Page 35 of 42
4.1 Introduction
The digital interface of the 1309 Multipoint Sampler is designed accord-
ing to ANSI/IEEE Std 488-1978, “IEEE Standard Digital Interface for
Programmable Instrumentation”. The only significant difference be-
tween this and the digital interface of IEC Publication 625-1 is in the
type of connector specified; a full range of connectors and adaptors
from LumaSense ensures compatibility between instruments fitted with
either connector.
The 1309 is connected to other instruments with IEEE/IEC interfaces
using the following LumaSense cables and connectors.
Cable AO0265, which has an IEEE standard connector at each
end, connects the 1309 to other instruments equipped with the
IEEE connector.
Cable WL0845, which has IEEE connectors at both ends, is used
to connect the 1309 to the IEEE connector of the Gas Monitor.
The codes and formats used in sending and receiving data to and from
the 1309 over the IEEE/IEC interface have been designed according to
the recommendations of IEEE Std 728-1982, “IEEE Recommended
Practice for Code and Format Conventions (For Use with ANSI/IEEE Std
488-1978)”. Note in particular that the 1309 carries out all communi-
cations other than defined bus command sequences using ASCII (ISO
7-bit) coded messages.
It is important to note that although the digital interface of the 1309 is
designed according to IEEE Std 488 and follows the recommendations
of IEEE Std 728, absolute compatibility with IEEE/IEC interfaces de-
signed 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 your local
LumaSense representative for further information.
4.1.1 IEEE Functions Implemented in the 1309
The interface of the 1309 implements the following functions as speci-
fied in IEEE-488. The sections referred to are the relevant sections of
the IEEE Std 488-1978 which specify the functions. The equivalent
clauses of IEC Publication 625-1 are given in parentheses.
Section 2.3 Source Handshake (SH) Interface Function,
(Clause 6)
SH 1 – complete capability