DH Instruments PPCK PLUS, Operation And Maintenance Manual

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PPCK+™ Operation and Maintenance Manual
Page 45
©2001 DH Instruments, Inc .
3.2.11 [
←
] AND [
→
] (JOG PRESSURE SET POINT)

PURPOSE
To jog the pressure target value in small increments around the set point.
See Section 3.2.10 for information on setting pressure automatically.

PRINCIPLE
PPCK+ sets and adjusts pressure automatically to a user designated target value.
In some cases, it can be useful to slightly adjust the target value, for example to set the
DUT to read a specific value as commonly done when verifying or calibrating an
analog gauge.
The PPCK+ jog function makes it easy to adjust the target pressure slightly. Pressing
the
[
←
] and [
→
] keys of the 4 x 4 keypad while controlling pressure in the main run
screen or when displaying the target pressure in the set pressure screen, causes the
target value to increase or decrease by the amount of the current hold limit (see Section
3.2.3).
For information on setting pressure automatically with PPCK+ see Sections 3.2.10,
3.1.2.3, 3.1.2.4).

OPERATION
The target pressure value can be jogged:
•
In dynamic control mode while controlling pressure in the main run screen.
•
In dynamic control mode in the set target screen.
To jog the target pressure value, press [
←
] to increase the target value or [
→
] to
decrease the target value.
Each time [
←
] or [
→
] is pressed, the target value is adjusted up or down by the current
value of the hold limit each time the key is pressed. Use [CUSTOM CONTROL] to adjust
the hold limit (see Section 3.2.6).
It will take several seconds after the pressure control target value has been adjusted for
PPCK+ to respond.