3 data logger function, Remote interface reference – American Magnetics 135 & 136 Liquid Helium Level Instruments (CE-Marked) User Manual

Page 35

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Rev. 3

23

Remote Interface Reference

Serial Communication DIP Switch Settings

4.1.3.3 Data logger function

Switch 1 of the communications DIP switch controls the data logger
function. This feature is normally used with a printer rather than a host
computer, since a computer can be more usefully programmed utilizing the
available command set. The data logger function generates a time relative
to instrument power-up and a corresponding helium level. The time and
corresponding helium level are formatted and output to the host device at
regular intervals as specified by the INTERVAL setting (the INTERVAL
setting may be set via the front panel, see page 3). The host device can be a
standard dot matrix printer connected via a serial-to-parallel converter, or
directly with a printer capable of receiving serial data. Presumably, any
serial-to-parallel converter which can be properly configured is acceptable.
AMI has tested the Model 135/136 with a standard, low cost converter
configured as a DTE device, 8 data bits, no parity, and 1 stop bit. In order
to communicate with the host device, it is necessary to set the Model 135/
136 to the identical baud rate of the host device. The settings for the data
logger function are:

DIP switch 1

Function

on

Data Logger On

off

Data Logger Off

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