Yokogawa DR240 - Manual (Page 105)

6-7 IM DR231-01E
Setting the Recording Conditions
6
6.3 Setting Recording Zones and Partially Expanded Recording
Setting Recording Zones (ZONE)
This setting specifies the recording zones for each channel. The set left and right position of the
zone correspond to the left and right span set at the SPAN menu (recording span). The left value
of the ZONE menu corresponds to the value of the left position of the zone, whereas the right
value of the ZONE menu corresponds to the value of the right position of the zone.
A zone can be set in 1-mm steps and must be within the range of dot-printed recording. The
configurable ranges of the left and right stops of a zone and their defaults are as follows:
Left Stop (Default) Right Stop (Default)
DR130 0 to 145 mm (0 mm) 5 to 150 mm (150 mm)
DR231/241 0 to 245 mm (0 mm) 5 to 250 mm (250 mm)
The right stop must be set to be at least 5 mm larger than that of the left stop. No decimal points
are allowed.
If the instrument is equipped with the optional computation function or floppy disk drive, this
setting can also be made for computation channels A01 to A30.
Partially Expanded Recording (PARTIAL)
This setting specifies whether to carry out partially expanded recording, and if so, which
percentage of the recording span will be compressed and the corresponding boundary value.
If the instrument is equipped with the optional computation function or floppy disk drive, this
setting can also be made for computation channels A01 to A30.
• Selecting Partial Recording ON/OFF
ON: Partial recording will be carried out;
OFF: Partial recording will not be carried out.
The default setting is OFF.
• Specifying the Compressed Part and Boundary Value
RATE
This setting specifies which percentage (1 to 99%) of the full recording span will be
compressed. The default value is 50%.
Boundary value
This setting specifies the boundary value which corresponds to the previous set compressed
part. The setting lies within the recording span, but when linear scaling is being used, the
setting lies within the left/right scale range. The default value is 0.
Note
If boundary values are to be set for succeeding channels, the decimal point is handled as shown below.
If succeeding channels are set, the decimal point position of boundary values when the measurement range
for each channel setting is different, is that determined for each corresponding range. As a result, it
exceeds the measurable range, an error occurs.
For example, if channels whose measurement ranges are 20 mV, 2 V, and type T thermocouple are set and
the boundary value is set to 10000, the following applies:
The boundary value of the channel whose measurement range is 20 mV: 10.000 mV;
The boundary value of the channel whose measurement range is 2 V: 1.0000 V; and
The boundary value of the channel whose measurement range is type T thermocouple: 1000.0 °C
As the measurement range of type T thermocouple is -200.0 to 400.0 °C, an error occurs for this channel.
For decimal point positions for each measurement range, see Chapter 14, "Specifications."
• Points to Note when Using Partially Expanded Recording
• Partial recording cannot be carried out if the input type of the computation channels is SKIP
or DI or if the computation channels are OFF.
• Partially expanded settings will be automatically canceled when either of the following
changes occur.
• the input type has been changed;
• the measurement range has been changed;
• the recording span has been changed;
• linear scaling settings have been changed;
• the reference channel for difference between channels has been changed.