LUDLUM MODEL 2241-2 Technical Manual page 30

Model 2241-2
Ludlum Measurements, Inc.
Technical Manual
:
POSITION 5
AUDIO DIVIDE
rate for the current detector setup. If the
position, no audible clicks-per-event will be heard.
This parameter ranges from:
0  Divide By 1
1  Divide By 10
2  Divide By 100
3  Divide By 1000
:
POSITION 6
RESPONSE TIME
the current detector setup. If the response is set to 0, the Model 2241-2
automatically calculates (for variable mode) the time constant based on the
incoming cps. If a variable of 1-199 is entered for TC, the response time
becomes fixed.
Variable Response
the incoming count rate. The two-position
toggle switch selects the maximum time constant (TC) for the
variable mode. The fast position varies the TC from 4-25
seconds, and the slow position varies from 4-60 seconds.
Fixed
programmable from 2-50 seconds, and the slow response is five
times slower than the fast TC. For MDA-type measurements,
the fixed response time mode is recommended.
:
POSITION 7
RATEMETER ALARM
alarm for the current detector setup. The units of this alarm are the same as
the units for the ratemeter display. The fifth push of the left button allows
the decimal point to be moved. The ratemeter alarm adjusts from 1 to 999
R/hr (or Sv/h), 1 to 999 kcpm. or 1 to 100 kcps. The units of the alarm are
determined by the units for the ratemeter.
:
POSITION 8
SCALER ALARM
from 1-999999, corresponding to the accumulated scaler count. After the
scaler alarm variable is entered, the scaler count time is prompted. The scaler
count time is adjustable from 1-9999 seconds.
:
POSITION 9
NOT USED
POSITION A :
NOT USED
- selects the audible clicks-per-event division
BY
allows changing the time constant (TC) for
- Response time is varied in proportion to
- The Fast (
Response
/
ALERT
/
COUNT TIME
Page 8-4
/ switch is in the
AUD ON OFF
/ (Fast/Slow)
F S
) response position is
F
allows changing the ratemeter
sets the scaler alarm variable
January 2016
Section 8
OFF