AMH-38™ AND AMH-100™ OPERATION AND MAINTENANCE MANUAL
2.3.2.4
CONNECTING PG7000 PLATFORM COMMUNICATIONS
Locate the 9 pin D-sub cable delivered with the AMH accessories.
The communications connection configuration depends upon whether the
PG7000 is being used with a PPC automated pressure controller.
AMH Communications Connection Without a PPC Automated Pressure
Controller
Connect the female end of the 9 pin D-sub cable to the AMH COM1 port.
Connect the male end of the 9 pin D-sub cable to the PG7000 COM3 port.
Set the PG7000 COM3 port to (see the PG7000 Operation and Maintenance
Manual):
−
Baud rate: 9600
−
Parity:
None
−
Data bits: 8
−
Stop bits: 1
AMH Communications Connection With a PPC Automated Pressure
Controller
The AMH shares PG7000 COM3 with the PPC automated pressure controller.
Connect the female end of the 9 pin D-sub cable to the AMH COM1 port.
Connect the male end of the 9 pin D-sub cable to the PPC COM2 port.
Set the PPC COM2 port to (see the PG7000 Operation and Maintenance
Manual):
−
Baud rate: 9600
−
Parity:
None
−
Data bits: 8
−
Stop bits: 1
Use another 9 pin D-sub cable to connect the PPC3 COM1 port to the PG7000
COM3 port.
Be sure that the COM3 port of the PG7000 Platform and the COM1 port of the
PPC have the same COM settings (see the PG7000 Operation and Maintenance
Manual).
2.3.2.5
CONNECTING A REFERENCE VACUUM SUPPLY
(AMH-38 ONLY)
The AMH-38 vacuum chamber is equipped with two KF-40 vacuum connections.
One of these may be used as an alternate to the KF-25 connection built-in to the
PG7601 platform (see the PG7000 Operation and Maintenance Manual). This
may be desirable when a very low reference vacuum is desired, for example
when using a turbo molecular pump.
To use the KF-40 connection on the AMH-38 for the vacuum reference supply,
use a KF-40 vacuum hose. Plug the platform’s KF-25 connection. Consider the
need to shut-off the vacuum supply when vacuum is not desired in the vacuum
chamber and the need to remove the AMH-38 from the PG7601 Platform to
access the piston-cylinder module or the mass set.
© 2007 DH Instruments, a Fluke Company
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