HA243821
Issue 5 Mar 98
Section 4
Page 4 - 13
MODEL 346 INSTALLATION AND OPERATION MANUAL
4.8 CHANNEL CONFIGURATION (Cont.)
4.8.10 MAG CENTRE
C1 Mag Center
-D.DDDD units
This page allows entry of a value about which the trace will be centred when trace magnification is instigated. See
section 5.5 for further details.
4.8.11 INPUT FILTER
C1 Filter time
XX seconds
The Input Filter slows the Full-range response of the complete instrument from its normal 0.5 seconds (None) to:
1, 2, 4, 8, 16 or 32 seconds. All functions, including alarm sensing and response, are slowed by this feature. The
Up/Down arrow keys are used to change the selection.
4.8.12 CJC TYPE
C1 CJC type
Internal
The TC Cold (reference) Junction compensation site (where the signal lead changes from Thermocouple wire or
compensated leadwire to copper) can be specified as either the recorder case input terminal board (Internal) or a
remote terminal area (External).
The Up/Down Arrows are used to select the appropriate CJC Type. If ‘external’ is chosen, the temperature of the
remote site must be entered in the Instrument Menu (see Section 4.9).
4.8.13 CHANNEL DESCRIPTOR
C1 Ch. Descr.
????????????????
The Channel Descriptor is a 16-character tag which appears above the current value on a single channel display
and is printed on the chart when the channel range is printed or the channels logged. The Descriptor is entered
using the Up/Down/Side Arrow keys. See section 4.4 ‘Entry of Alphanumeric Data’ for a list of available charac-
ters.
4.8.14 CHANNEL ADJUST
C1 Ch. Adjust
X.XXXX ?????
In some cases it is desirable to adjust the displayed and recorded Channel Value to agree with other measure-
ments. The Adjust value is not limited. Positive values add to, and negative values subtract from the measured
value.
The Channel Adjustment can also be used to ‘zero’ an input (such as a load cell) which has a unique input value for
a zero output reading. The Up/Down/Side arrow keys are used to enter the amount of adjustment.