7.9 Setting Pen Offset Compensation On/Off (Pen model, /D1 option)
The POC function eliminates deviation (phase difference) between the pens on the time axis. The following figure shows a side view of the recording status for the 2 pen model (3 pen model is similar).
The initial value is ‘OFF’.
Reference pen (2nd pen)
Recording chart
Reference pen is
1st pen
Front of Recorder
P
Chart feeding direction
2nd pen for 2 pen model 3rd pen for 3 pen model
Recorder as Viewed from the Side
This figure shows that, in any pen recorder (in order to prevent collision between pens) the pens must be offset by a distance P. Therefore, points recorded at the same time are separated on the time axis.
In the case of Pen Offset Compensation, a delay memory is used to store measurement data, equivalent to the time offset P of the pens (other than the reference pen).
The pens will start to record these stored data when the chart is fed by the amount of P (time offset).
NOTE Immediately after the recording has been started, only the reference pen operates normally. The other pens might not seem to operate correctly, but this is due to the time offset.
When you stop the recording, the chart will stop and therefore data stored in the delay memory will not be recorded anymore. Therefore, these data will be lost.
Note that an asterisk will be printed in the periodic printout when POC is ‘ON’.
SETTING PROCEDURE:
Enter the SET UP mode by turning ‘ON’ the power while pressing and holding the [CH UP] (
ENT) key until the SET UP display appears.
Use the [
] key to select the display [ 
]. Press the [ENT] key.
Select ‘ON’ or ‘OFF’ using the [
] key. Then press the [ENT] key. The display
[ 
] appears.
Before leaving the SET UP mode, you have to store your new settings. Use the [
] key
to select the [ | ] display, and press the [ENT] key. |
|
Select [ | ] to keep your new settings or [ | ] to abort the settings, and |
press the [ENT] key. After a few seconds, the OPERATION mode will appear.
7 - 10
