PMX MANUAL
23
118164-001 REV. A
CHAPTER 4 CONFIGURATION,
CALIBRATION AND OPERATION
4.1
INTRODUCTION
This chapter describes the procedure for
configuring the tube type, configuring user
allowed dual speed starter data and
operating filament auto-calibration.
WARNING:
USE EXTREME CARE IN MEASURING HIGH VOLTAGES. ACCIDENTAL CONTACT
MAY CAUSE SERIOUS INJURY OR DEATH.
MAINS VOLTAGE WILL BE PRESENT INSIDE THE GENERATOR CHASSIS, EVEN
WITH THE POWER SWITCHED OFF. THIS VOLTAGE IS EXTREMELY DANGEROUS,
USE EXTREME CAUTION.
THE DC BUS CAPACITORS, LOCATED ON THE DC BUS ASSEMBLY, PRESENT A
HAZARD FOR A MINIMUM OF 5 MINUTES AFTER THE GENERATOR HAS BEEN
SWITCHED OFF. CHECK THAT THESE CAPACITORS ARE DISCHARGED BEFORE
TOUCHING ANY PARTS IN THE GENERATOR.
WARNING:
THE PROCEDURES IN THIS CHAPTER REQUIRE THE PRODUCTION OF X-Rays.
TAKE ALL APPROPRIATE SAFETY PRECAUTIONS TO PROTECT PERSONNEL
FROM X-Ray RADIATION.
WARNING:
ALWAYS ENSURE THAT THE EQUIPMENT UNDER TEST AND ALL ASSOCIATED
TEST EQUIPMENT IS PROPERLY GROUNDED
ENSURE THAT THE HIGH VOLTAGE CABLES ARE INTACT / UNDAMAGED AND
PROPERLY CONNECTED BEFORE ATTEMPTING EXPOSURES
ENSURE THAT THE PMX IS PROPERLY
INSTALLED AS PER CHAPTER 2 AND
CHAPTER 3 BEFORE OPERATING WHAT
THIS CHAPTER DESCRIBES.
4.2
TUBE PREHEAT TABLE
CONFIGURATION
The PMX contains up to 2 tube types power
limitation and filament value tables. Consult
Spellman representatives when ordering for
available tube tables pre-installed or tube
type field configuration possibility.
Reloading the default preheat tables in the
PMX unit requires use of the DIP switches.
The DIP switches are located near the edge
of the board, to the right of the connector. The
DIP switch identifiers are stenciled on the PC
Board just above the switches, and the
individual switches are numbered at the
bottom of the DIP switch. The figure below
illustrates the DIP switch placement.
