Maintenance, Service, & Calibration
EPM2000/EPM2000e Reference Guide
56
Figure 12: Removing the EPM2000 fuse and the spare fuse compartment.
How can I set the EPM2000 for the highest volume of data transfer?
Set the buffer data type binary, the buffer depth to 4095, the buffer type to fixed, and output
continuous off. Use the IEEE-488 bus. At intervals of less than one per second, use
out dump
to clear the buffer. The IEEE-488 bus can read the entire EPM2000 buffer (in binary mode) in
less time than it takes to fill it at 1000 pps, so data can be transferred in a sort of "real time"
mode.
Why doesn’t the instrument indicate an invalid ratio when Channel A, Channel B, or both
channels are overranging?
If either or both channels are overranging while the instrument is in ratio mode, the ratio reading
will be invalid. This is a known bug for instruments containing firmware Version 4.32 or earlier. If
an accurate ratio reading is desired, prevent overranging by making sure enough headroom is
available on the ranges selected for the individual channels.
FUSE REPLACEMENT
The EPM2000 has no user-serviceable parts other than the replaceable fuse located on the rear
panel. Replace the fuse by using a small flat-head screwdriver to carefully pry the fuse holder from
the power entry module. Use only a 240VAC/1A fast-blow fuse. Locate a spare fuse in the
removable fuse holder.
If the EPM2000 blows two or more fuses in a short period of time, turn the unit off, disconnect
it from the AC supply, and contact Molectron Detector, Inc.
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