Step and auto-step functions – Time Electronics 1090 Portable Process Calibrator User Manual

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1090 Technical Manual

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Recalling values

To recall the stored values the unit must be in ’SOURCE’ mode.

1. Press ‘RECALL’, the display will show, Recall 0-9 >

2. Press the required store location number, the display will show the stored value and it will
be sent to the output terminals.

3. Repeat steps 1 and 2 to recall the contents of the other store locations.

It should be noted that the store locations only store the numeric value, and not the
units. Therefore the correct units i.e. uV, mV etc must be selected before the recall is
done.

3.11. Step and Auto-Step Functions

These modes provide a method of manually or automatically stepping through the stored
values.
When in automatic mode the unit may be programmed to dwell on the stored value for
between 1 and 9 seconds before proceeding to the next one.
To use the Auto/Manual Step functions the unit must be in ‘SOURCE’ mode.

Manual Stepping

Ensure that the unit is in ‘SOURCE’ mode and the desired units are selected. Use the
‘RECALL’ key to set the pointer to the stored locations. If you want to start at location 1,
press ‘RECALL’ followed by ‘1’. This will display and output the contents of location 1.
Subsequent pressing of the ‘STEP’ key will step through the store locations in order, starting
with location 2.

After recalling the contents of location 9 the next step will return to location 1.

Note: If the ‘RECALL’ key is held in for a short while before releasing it will show the
store location number being recalled

Automatic Stepping

Use the ‘RECALL’ key to set the pointer to the required first location. The select ‘AUTO
STEP’. The display will then ask you to enter the required delay in seconds, enter a single
figure between 0 and 9 followed by the ‘ENTER’ key. This will set the dwell time on each
recall and automatically start the sequence. After the 9th location has been recalled the
sequence will continue by rolling over back to location 1. The cycle of stepping through the
locations will continue indefinitely until a key is pressed - this will terminate the cycle
immediately.

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