PPC3™ OPERATION AND MAINTENANCE MANUAL
© 2002-2007 DH Instruments, a Fluke Company Page 34
For PPC3 to successfully identify and initialize external RPM4s, the RPM4 COM1 port
settings must be:
Baud rate: between 1 200 and 19 200
Parity: Even
Date bits: 7
Stop bits: 1
If PPC3 is not able to establish communications with RPM4s and their Q-RPTs, check
that the RPM4 COM1 port setting conform to the requirements above. If the COM1 port
settings are correct, check that the correct communications cable is being used
(standard pin-to-pin DB-9M to DB-9F RS232) and is connected to the correct
communications ports.
PPC3 COM2 > 1
st
RPM4 COM1; 1
st
RPM4 COM2 > 2
nd
RPM4 COM1
See the RPM4 Operation and Maintenance Manual for additional information on RPM4
RS232 communications and COM port settings.
When an RPM4 is initialized as an external device to a PPC3 pressure controller, the RPM4
front panel keypad is locked out and the second line of the display becomes:
<PPC3 EXT DEV: IDLE> (if RPM4 is initialized by PPC3 but not currently in use)
<PPC3 EXT DEV: ACTIVE> (if RPM4 is initialized by PPC3 and is currently in use)
After using an RPM4 as an external device for a PPC3, cycle power to return to the
previous RPM4 settings, restore front keypad capability and return to the normal MAIN
RUN screen.
Some screens, such as the RPT identification screen, go beyond the two lines provided by
the display. Press the cursor control keys to move the cursor to access the lines that
are not visible or directly enter the number of the hidden menu choice if you know it.
The third line is not included if no 2
nd
(X2) RPM4 is detected.
3.3.6 [AUTOTEST]
PURPOSE
To execute a programmed sequence of automated pressure control target values and/or to
AutoRange the PPC3 based on the full scale and tolerance of the device under test.
PRINCIPLE
The AutoTest function is intended to facilitate the execution of a series of pressure control
target values such as is commonly needed when PPC3 is used to run a calibration sequence
on a device or system being tested.
There are two types of sequences:
Quick Test Allows quick definition and execution of a sequence in the
current range and using all of the current settings
(pressure unit of measure, measurement mode, control
mode, control settings, display resolution).
Quick DUT Test (QDUT) AutoRanges PPC3 based on the full scale and
tolerance of a device under test, prompts the user
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