MODEL 9DP-1 Operator’s Manual
Ludlum Measurements, Inc. 16 December 2015
USB Error Messages
4.5 Changing the View
The Model 9DP-1 is programmed to only have one view. This view may,
however, be exchanged for one of three other views already pre-programmed
into the instrument. Exchanging views can be accomplished by connecting a
standard USB keyboard to the instrument and selecting the desired view. See
Section 5.4 for more detail.
4.6 Correction Factor Function
4.6.1 Description and Use
The Model 9DP-1 has an added function to add up to three pre-configured
correction factors, and also optionally fixing the electrometer range. This
function is useful, especially for integrating pulsed fields from different
equipment. These correction factors can be applied in order to correct for losses
due to low energy or short duration pulses. Fixing the electrometer to a particular
range reduces ranging losses – losses accrued while the electrometer decades up
to measure a high field. This function is called "CORRECTION FACTOR" and
is accessed by pressing the function key on the front panel until CORRECTION
FACTOR is displayed in the bottom right corner of the display. Once
CORRECTION FACTOR is displayed, pressing the ACK/RESET or * key for
3 seconds will activate the first correction factor setting. Use the ACK/RESET
or * key to select the second or third correction factor settings, or to turn the
CORRECTION FACTOR off.
4.6.2 Defaults
The first default correction factor locks the main display in the top range
(range 5) with a correction factor of 1.000 displayed. Pressing the
ACK/RESET or * key for 3 seconds again will activate the second
correction factor of 1.429, with the main display still locked in the top range.
To activate the third and final correction factor of 1.000 with the main
display auto-ranging, press and hold the ACK/RESET or * key for 3
seconds. Pressing and holding the ACK/RESET or * key for 3 more
seconds will turn the CORRECTION FACTOR off again. Note that the
correction factor (or CF) is also used in calculating the ratemeter display.
4.6.3 Zeroing Integrated Dose
When using any of these correction factors, the user may press the function key
on the front panel until the integrated dose function is displayed. The user may
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