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2 Identifying the instrument version
2.1
Instrument description
The pen recorder provides up to three chan-
nels for recording measurements, which are
isolated from each other by optocouplers.
Channel 1 can be used to write text in addi-
tion to the signal trace. All channels are ze-
roed using Hall sensors. The measurements
can be indicated by pointers against scales.
A 4-digit 7-segment display is available for
programming. Operation is by six keys on
the instrument front. The configuration data
are stored permanently in EEPROM.
Input signals include current and voltage
signals (standard signals). The watchdog
monitors the recorder function and triggers
a restart in the event of a fault. On a power
failure, the real-time clock is supplied by a
lithium battery.
An overview of all the parameters of the pen
recorder
is
given
in
the
Appendix
( Section 12.4).
7
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