Ludlum Measurements 2350 User manual

DATA LOGGER
Revised: July 1993
Serial No. 106622 and Succeeding
Serial Numbers
Software Version # 37102n16
.
cl
I!!!
LUDLUM MEASUREMENB, INC.
501 OAK ST., P.O. 60X 810
svuEmTER,Tx78558
9l-FAx:9lW3!%672
Ludlum Model 2350

f
1
71.1 uR/hr RAT
I’ ’
0
60 SEC Et
15.3 UR DOS
218 MIN DOS
18: 44 DET#O2
#OO 1
0 *o
WAND
MODEL 2350
DATA LOGGER
AUDIO 1oo
DIVIDE
1
VOLUME
SERIAL I/O
(/@zqJ)
o o ACKNLDGE @
xxxxx
I
J

Ludlum Measurements, Inc. warmnts the,products covered in this instruction manual to be thee
of defects due to workmanship, materials, and design for a period of twelve months from the date
of delivery, with the exception of photomultiplier tubes and geiger tubes, which are warranted d&ct-
ike for 90 days. This warranty is voided in instances of improper installation abuse, mishandling,
misuse, fkight damage, or repair by unqualified persons.
In the event of instrument failure, notify Ludlum Measurements, Inc. for repair or replacement.
Liability of this warranty is limited to the purchase price of the insWment.
RECEMNG CONDITION EXAMINATION
Be sure to verify that the shipping carton is received in good condition with no visible damage,
Should the instrument be received in a damaged condition, save the shipping container and the
packing material and request an immediate inspection by the carrier.
RETURNOFGOOIISToMANuFAcllJRER
If equipment needs to be returned to Ludlum Measurements, Inc. for repair or calibration, please
send to the address below. All shipments should include documentation containing return shipping
address, customer name, telephone number, description of service requested, and all other necessary
information. Your uqXration will expedite the return of your equipment.
’
:
5olOAKS~
SWEEIWA’IE& TX 79556
91~23~5494
FAX [phone]

M2350 Data Logger
1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
3. DESCRIPTION OF FRONT PANEL CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . 2
4. DESCRIPTION OF FUNCTIONS . . . . . . . . . . . . . . . . l . . . . . . . . . . . . . . . . . . . .
2
5. OPERATINGPROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
5.1Installingbatteries.. ...........................................
5
5.2operatingtheinstrurnent ........................................
5
5.3P~orminga”coldstart” ........................................
5
6. DESCRIPTION OF DISPLAY MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6.1 Normal display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6.2ParameWs-d&play.. ...........................................
6
6.3Detectordisplay
..............................................
7
6.4Alarmdisplay.. ...............................................
7
6.5Loggeddatadisplay ............................................
8
6.6Recycledatadisplay ...........................................
8
6‘7 Recycle setup display
........................................... 9
7. DESCRIPTION OF COMMANDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
7.1setcommands ...............................................
7.2control~~ ............................................
7.3Readcommands
.............................................
8. COMMANDUSAGE ............................................
8.1 Scanthrou~thedisplaymodes ..................................
8.2Setvariousdetectorsettings ......................................
8.3Readvariousdetectorsettings
....... j.. ..........................
11
12
14
18
19
20
21
9. APPLICATIONS
..................
.
..................
.
.........
22
9.1 General M2350 setup
.......................................... 22
9.2CountratemeterwithaNaIscintillator .............................
22
9.3Micro-RmeterwithaNaIscintillator.. .............................
24
9.4SurveymeterwithaG-Mdetector.. ...............................
26
9.5Lqgingreadhgswithmultipleprobes ..............................
27
9.6Viewloggedreadings ..........................................
31
page i

10. SPECIAL,
OPEBA’I’@G MODES _ .i:t, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
10.1 Recyclemade
............................................... 34
10.2 Dead time calibration
.........................................
36
IO;3 CMibration constant
..........................................
38
11.
EIANDHEL,DTERMINALOPERATION ...........................
41
11.1Terminalsetup ...........
t...:Y; .:.
...........................
41
11.2TerminaIoperatibn;. ....... .; .........
.:
....................... 41
12.
OPTICALWANDOPERATION..
.....
.
.....
.
.....
;;.
....... .-.; ..
42
12.1 Optidtiuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
12.2Barcode generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
PAR’TSL,IST . . . . . . . . . . . . . . . ..A.....................~ ;......; . . .
43
,*’
43
Model235ODataLogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
celltral~Board,~g371x1 . . . . . . . . . . . . . . . . . . . . ...*...
43
Am@PowrsupplyBoard,~~g371x2 . . . . . . . . l . . . . . . ...’ . . . . . . . . 45
Back@w~Dr&ng371 x3 . . . . . . . . . . . . . . . . . .;‘. . . . . . . , . . . . .I 48
I/Oh~~I>rawving371 x5
. . . . . .;. . . . . . . . . . . I’. . . . .‘. . . . . . 48
WkingDiagfmqIhwing371x4 . . . . . . . . . . . . . . . . . . . . . . . . . ‘;‘.......
50
. ..
,i
PageJi ,.
.

M2350 Data Logger
1. GENmAJJ
The Ludlum Model 2350 Data Logger is
a self contained counting instrument designed
for operation with scintillation, proportional,
or G-M detectors. The M2350 is complete
with a voltage-sensitive amplifier, single
channel analyzer, detector high voltage power
supply, detector overload sensing circuitry,
and data logging memory all under micropro
cessor control. The settings can be changed
through the bar code reader or the RS-232
serial I/o port.
‘The M2350 provides four different types
of data readout. ‘Ihey are 1) a digital
ratemeter, 2) a five decade. log bar graph
ratemeter, 3) a timed counter, and 4) an
integrated dose counter and timer. All four
readouts operate from the same count input.
The count displays can be cone&d for
detector dead time.
The digital ratemeter and integrated dose
counter can also have a calibration constant
applied to them to allow direct readout in user
selected units (ie. R/hr, dpm cps, etc.). All
readout displays can be individually turned on
or off except for the bar graph display, which
is always displayed. The counters will
continue to function even when the counter
display is turned off.
The M2350 provides a click per event
audio output with a programmable AUDIO
DIVIDE selector switch to increase its
usefulness with sensitive detectors. There is
also a five decade analog output available on
the backplane.
The data logging memory can store the
readings fi-oin 250 samples and the setups for
sixteen different detectors. The logged reading
contains the count da& count time, date,
detector number, location code, sample
number, status, time, and type of reading. ‘Ihe
detector setup memory contains the settings
for the detector calibration constant, detector
dead time, detector high voltage, detector
model number, detector serial number, display
range multiplier, display time base, display
units, integrated dose alarm setting, overload
current, ratemeter alarm &tin& scaler alarm
setting, scaler count time, threshold, and
window.
The memory is powered by the M2350
batteries even when the M2350 is turned off.
In addition, there is a backup capacitor that
keeps the memory powered for about thirty
minutes when the batteries are removed to
allow time to replace weak batteries.
l HEH WJLTAGEz 0 to 2500 volts. l AUDIa Click per event through built
in unimorph speaker with adjustable volume
.SmsrxlWIYz With threshold at 100, and selectable divide by 1, 10, or 100.
adjustable from 1.5mV to 35mV, f&ory
calibrated to 1OmV.
*
l CAUBMTION CZCINMU: None;
’ all calibrations done through the bar code
l INPUTIMPEDANCE 1Ok input or RS-232 serial I/O.
l Dl!XlEKR cKBNEKR Zkries l BA’lJERIE Four “D” cell flashlight
II 11
C. batteries in
separate externally accessible
compartment.
l DISPUW8lineby15chamcterLCD
display with EL backlight.
l BATJJRY HFE From 50 hours to 90
hours with Duracell MN1300 batteries
paw 1

M2350 Data Logger
dependiig upon use of EL backlight. 4.4
l WEIGHR 2.3 kg (Sibs) including four
volts is considered the end point of the battery
“D” cells.
life. When the batteries reach this point’ there
is about two to four hours use left.
l FINISH Computer beige polyurethane
enamel with black silk-screened nomenclature.
. SIZE 1 lcm (4.25”) W x 22cm (8.75”)
L x 15~x11 (6”) H (21~x1 (8.25”)H with
handle).
3. DESQUETIONOFFlRONTPAN]E3L~
l DISPIAYz 8 line by 15 character
backlit liquid crystal display.
l DFLEcI[1DR: seiies “C” connector for
detector.
o 1: Provides 1 click per event
. o10: Provides 1 click per 10 events
o 100: Provides 1 click per 100
events
0 Impedance: 1ok.
o Ballast resistor: 1M
l VOUTME: One-turn potentiometer
used to adjust the vohune of the speaker.
l F0WERz Twoposition switch to turn
power to instrument on or off.
l BACKLZGHF Turns LCD backlight
on or off.
l AUDIO DIVIDE Three-position
switch used to control audio divide by:
l ACKNUKEz Pushbutton switch used
to acknowledge and silence the alarms.
l WAND: Connector for optical wand
used to read “3 of 9” code bar codes.
l SERIAL IlO: Connector for RS-232
signals to interface to computers or ternGnals.
4. DEERFIlOl’T OF FuNcIIc)INS
l cJlxmmm: l-here are four counters
available. They all use the same input but
provide different types of readouts.
0Digital Ratemeter:
Provides a
digital readout of the detector count rate.
r
‘Ibis readout is corrected for detector dead
timeandcanalsobecalibmtedfordirect
readout in the desii units and timebase.
o BarGraph-:
Provides a
five-decade log readout of the detector
count rate in counts per second Tom one
cps to 100 kcps that is corrected for
detector dead time.
o Scaler: Providesatimedcounter
for accumulating the detector counts far a
preset time. The count range is up to
999,999 counts with count times f.?om 1
second to 65,535 seconds in one-second
increments.
0 Integrated Dose: Provides a
readout of the total accunmlated dose and
the accumulation time in minutes. This
readout is also corrected for detector dead
time and displays in the same units as the
digital ratemeter.
page 2

l CIDCKTheM2350hasarealtime
clock that keeps the time (24hour format) and
date.
programmable up to 2500 volts in one-volt
increments.
l USER ID: A fifteen-character identifi-
cation code that can be used to identity each
instrument. The characters can be numbers or
letters.
l DEIlZIORMODElLNUMB~This
function allows the detector settings to include
the model number of the detector. The model
can be up to nine characters long and can
include both numbers and letters.
l DEIKI0R SELKIlaS: Up to
sixteen different detector setups can be loaded
into the M2350. Once the setups are loaded a
single co-d is all that is required to
change setups to a different detector. The
following items are stored for each detector
setup:
o Detector calibration constant
0 Detectordeadtime
0 Detector high voltage
0 Detector model number
0 Detectorserialnumber
0 Display range multiplier
o Display time base
0 Display units
l DEIKTORSEEUALNUMB~UMBER:s
function allows the detector serial number to
be saved so there will be a record of which
detector took which data.
. DJSPLAY RANGE MMlXIPLWt
The digital ratemeter can be programmed to
auto-range or be forced into using a multiplier
of micro, milli, none, or kilo.
l DISPLAY TIME BASE: For all units
except Ci/d and E%q/cn?, the digital
ratemeter can have a time base of seconds,
mini, or hours.
M2350 Data Log&r
l DISPLAY UNlTS: The digital
o Integrated dose alarm setting
0 overload current
0 Ratemeter alarm setting
0 scaler alarm setting
0 Scaler count time
o Threshold
oWindow
ratem- and integrated dose can be $ro-
grammed to readout in the following units:
oad, @MY9 NW9 (W, 09, -mg),
@)isintegratioion, (C)aunts, (Ci/cn?), or
wcti.
l DETECTOR CALIBRATION
CXWSTANT me digital ratemeter and
integrated dose can be calibrated to read
directly in the desired units. This is
accomplished by dividing the dead t$ne
corrected ratemeter or integrated dose by the
calibration constant.
l ALf!RMS: There are programmable
almns for the digital ratemeter, scaler, and
integrated dose. When a level is equal to or
exceeds the alarm setting the audio output is
turned on and a status message is displayed in
the appropriate display line. The audio output
can be turned off by pressing the ACK-
NLDGE button ‘Ihe status message will
continue to display the alarm message until
the alarm condition is no longer present.
l DETEcroR DEAD ‘Ills The
M2350 allows for the correction of dead time
1OsseS.
l DEIlXXX HIM VOLTAGE:
Supplies the bias voltage to the detector. It is
l OlvBImD CURRENTP. used to
detect when the detector is drawing excessive
current and the output fi-om the detector may
not be accurate. It is programmable up to 40.0
p4 in 0.1 /LA increments. It also can be
disabled if desired.
page 3

M23!50 Data Logger
l 0-W If the count rate is
high enough for 75% dead time conection, the
digital ratemeter will display the message
‘OVER RANGE!’
. sm alum mm This
provides the preset time the scaler counts. It
can be set from 1 to 65,535 seconds in
one-second increments.
0 Location code: This is the location
code the user enters. It can be up to ten
characks long and can be a combination
of numbers and letters. The location code
does not need to be unique for each
readiig since the sample number is
unique.
1
. sINGLJ3m
ANALYzEFt
The SCA can be disabled to allow for gross
counting or enabled to allow energy discrim-
ination. Both the threshold and window are
rrosle up to 1000 in integer
.
l LQGGlNG MEMORY: Up to 250
samples may be stored inthe internal logging
memory and be retrieved later. The following
data is saved:
0Sample number: This is the unique
sample number of the logged reading and
will be fkom 0 to 249.
0 Status: This records the IV2350
status at the time of the reading. It con-
tains the alarm, ov&ad, and over-range
conditions.
0 Time: The time is stored as
hours,minutes and is in the 24 hour
format.
0 Count data: This is the value of the
counter that was logged. The counter is
either the digital ratemeter, scaler, or
integrated dose.
0 Logging mode: Ibis is the
identifier that records the type of reading
whether it was the digital ratemeter,
scaler, or integrated dose.
0 Count time: This is the count time
of the reading. For the digital ratemeter, it
is 0. For the scaler, it is the number of
seconds the scalar counted for. For the
integrated dose, it is the number of
minutesthattheintegrateddosehasbeen
accumulating.
l luxx;ED DATA DISPLAYz This
allows the readout of a specified data sample
without requiring the complete memory to be
dumped.
l RECYCIE The M2350 has a recvcle
0 Date: The date is stored as month,
day, yf=*
0 Detector number: This is the
number of the detector (from 0 to 15)
whose settings were loaded into the data
loggeratthetimethereadingwastaken.
mode where automated logging can-be
pe~%ornxd The recycle cycle can consist of
f?om 1 to 6 logging cycles per recycle. Each
of the 6 logging cycles can be setup to log the
digital rakmekr, scaler, or integrated dose
and then wait from 1 to 65,535 seconds before
karting the next logging cycle. The recycle
mode can be programmed to continue until the
data logger memory is full or for a set number
of recycles.
page 4

lM23!50 Data Logger
5.OPER4'IlNGl'RCXXDuREs
5Mnstallingbatteries 5.3 Performing a ‘kold statt”
To install the batteries,unscrewthebattery
door latch and insert four “D” cell batteries in
the battery compartment. The correct position
of the batteries is marked on the bat&y door.
Refasten battery door.
5.2Ope1atingtheimtn1ment
Switch the
power ON/OFF
switch to the ON
position. The
display should
turn all blue afkr
about one second.
The blue will
remain on for two
37102N16
MEMORY TEST OK
CJ?UTESTOK
$llle 1.
seconds and then self check.
be replaced with
the display in Figure 1. After two seconds, the
display will then be replaced with the last
display that was active before the power was
turned off. If the display appeam abnormal, a
cold start needs to be done.
After the power up cycle is completed,
select the desired diilay mode and the
desired detector parameters and proceed with
the instmmnt operation.
NOTE
P A cold start wil clear all detectors
and also clear the logging memory.
OncedoneJhedata~be
recoVered.
A cold start is needed to clear the
M235O's memory if the batteries have been
removed long enough for the memory to be
lost or if the user desires to reset the memory
before setting up for specific detectom.
To do a cold start, enter SSRwith either
the hand held knninal or the optical wand
The display should turn all blue afler about
one second The blue display will remain on
for two seconds and then be replaced with the
display in Figure 2.
This will be dis-
played for two
seconds and then
‘the IV2350 will
MEMORY TEST OK
resume operation
mu TEST OK
with all settings COLDINITIALJZE
set to their default
Values.
*
Cold Start Execute.
,

MZ350 Data Logger
6. DESCFUPIlm OFDISPLAY MODES
There are seven different display modes.
‘Ihey are described below.
6.1 Nomal display
The normal display mode displays all four
counters, the time, the detector number,
thelocation code and the number of samples
stored in the logging memory. The display is
shown in Figure 3. ‘Ihe meanjng of each line
follows:
l Line 1:
The digital
ratemeter is dis-
played in the left
part of the line.
The message
‘RAT indicates
that this is the
digital ratemeter.
0. OuC!s RAT
I'( "
0 sa
10 SEC SCL
0. out
4MIN DOS
0:05 DEX'#OO
(IXXTION) #000
iIgure 3.
If there is a digi-
NOrmal DisplaY,
tal ratemeter
alarm, the message alternates between ‘RAT
and ‘AIR at one-second intervals. If there is
a detector overload, the message ‘OVER
LOAD!’ alternata with the digital ratemeter
reading. If there is an overrange, the message
‘OVER RANGE!’ alternates with the digital
ratemem. If both overload and overrange
conditions exist, the overload message is used.
* Iine2: Thefivedecadelogbargraph
is displayed on this line. The count rate is
always in counts per second ‘Ihe bar graph
covers f?om 1 cps to 1OOk cps.
l Line 3: The scaler readout is displayed
on this line. The message ‘SCL’ indicates that
this is the scaler. If there is a scaler alarm, the
message al- between’SCL’ and’ALR%at
one-second intervals. Between the scaler and
the ‘XL! message, the message ‘CNT appears
when the scaler is counting.
l Line 4: Tbe scaler count time is
displayed here. The ‘SCL’ message is always
on and indicates that this is the scaler timer.
When the scaler is not counting the time
displayed is the count time for the scaler. If
the scaler is counting, the time displayed is
the time remaining until the count is done.
l Line 5: ‘Ihe integrated dose readout is
displayed on this line. The message ‘DOS’
indicates that this is the integrated dose. If
thee is an integrated dose alarm, the message
alternates between ‘DOS’ and ‘ALR’ at one
second intervals.
l Line 6: The integrated dose count time
is displayed here. ‘The ‘DOS’ message is
always on and indicates that this is the
integrated dose timer. ‘The time displayed is
the elapsed time in minutes since the integrat-
ed dose started accumulating.
lIine
7: The clock time is displayed at
the left side of this line in the 24 hour format.
‘Ibe colon blinks on and off at one-half
second intexvals. If the battery voltage is 4.4
volts or lower, the message ‘LO BAT
alternates with the time at one second inter-
vals. The right part of the line shows which
detector settings are beiig used by the M2350.
lIine 8: The location &de is displayed
in this line. The number of logged readings is
displayed at the right side of this line.
6.2 I’amneten display
*
\
The parameters display mode displays both
ratemeters, the scaler, the high voltas the
window, the battery voltage, the threshold, the
time, the date and the user identification
number. The display is shown in Figure 4.
The meaning of each line follows:
paw 6

MZ350 Data Logger
l Lines 1
thmgh 4: ‘Ihe
0. OuC/s RAT
same as in the
1I
I l I I
0 sa
normal display 10 SEC sa
(section 6.1)
0 W= OFF
E;=5.5 T= 100
l Line 5:
0:05 l/01/90
The detector high
(USER ID)
voltage and Gin- Rgure 4,
dow are displayed
I%EUE&XS DI@~~Y.
on this line. If the
window is off, the window setting is replaced
by the message ‘OFF’.
l Iine 6: The battery voltage and
threshold are displayed on this line. If the
battery voltage is 4.4 volts or lower, the
message ‘LOW replaces the bat&y voltage.
l Line 7: The clock time is displayed at
the left side of this line. It is in the 24 hour
format. “Ihe colon blinks on and off at l/2
second intervals. If the battery voltage is 4.4
volts or lower, the message ‘LO BAT
alternates with the time at 1 second intervals.
‘Ihe right part of the line shows the date as
.rnonth day, year.
l Une 8: The user identification code is
displayed on this line.
6.3 Detectordisplay
The detector display mode displays the
current detector selection, the detector model
and serial numbers, display setup, high
voltage, window count time, threshold,
calibration constant, and detector dead time.
The display is shown in Figure 5. The mean-
ing of each line follows:
l Iine 1: This line displays the current
detector whose settings are bemg used.
l Line 2: The detector model number is
displayed on this line.
l Line 3:
?he detector serial
number is dis-
played on this
line.
D)ZX'EmR #00
MODEL
SER.#
U=7 M=O TB=O
HV= 0 w= OFF
CT= 10 T= 100
CC=1.000000e+00
LT=O.000000e+00
9 Line 4:
The lefi part of Qlne
5.
this line displays
ktector Display.
the code for the
display units. The
middlepartofthis
line displays the multiplier code. The right
part of this line displays the code for the
display time base.
l Line 5: This line displays the detector
high voltage and window setting. If the
window is off, then the window setting is
replaced by the message ‘OFF’.
l Line 6: This line displays the scaler
count time in seconds and the threshold
setting.
l Line 7: This line displays the cali-
bration constant used by the digital ratemeter
and the integrated dose. ‘Ihe digital ratemeter
is kept in counts per second internally and is
divided by the caIibration constant to provide
the actual readout.
l Line 8: This line displays the detector
deadtime.Thisnumb&susedtocorrectfor
dead time losses caused by the detector and
the M2350 dead time.
*
, 6.4 Ahum disdav
The Alarm display mode displays the
alarm and overload settings. The display is
shown in Figure 6. The meaning of each line
follows:
l Line 1: This line displays the curnznt
detector whose settings are being e
paw 7

M23!50 Data Logger
l Line 2:
This line shows
DEX'ECIQR #00
that the alarm set-
RAT LOOOe+09
tings are being
Sal 999999
displayed.
DOS l.OOOe+09
l Line 3:
OVEiF!LOAD= OFF
The digital
mtemeter alarm
Ggure 6.
setting
is &+ AhIlllDiSplrlly.
played on this
line.
lline 4: The scaler alarm setting is dis-
played on this line.
lIine 5: The integrated dose alarm is
displayed on this line.
lIine 6: This line is blank.
lline 7: The overload setting in tenths
of p.A is displayed on this line. If the overload
is disabled, the setting is replaced with the
message ‘OFF.
lIine 8: Jhis line is blank.
6.5 Lagged daba dispiay
Tbe lo& data display mode displays the
logged data tirn the selected sample. The
logged data consists of the sample number,
the location code, the detector USBCS, the
logging mode, the count, the count time, the
time, and the date. ‘Ihe display is shown in
Figure 7. ‘Ihe meaning of each line follows:
l Iine 1: The sample number is dis-
played in this line.
. W 2: The location code is displayed
in this line.
l Iine3:Thedetectorwhosesettings
were used to log the data is displayed here.
l Line 4:
The type of data
logged is dis-
played here
DEX'FCIOR #00
RA-
(ratemeter, scaler,
integrated
i&e).
I
0:05 l/01/90
I
l Line 5: figune 7.
The count that W~~Di@aY.
was logged is dis-
played here.
l Iine6: Iftheratemeterreadingwas
logged, this line is blank. Ifthe scaler reading
was logged this line is the scaler count time
in seconds. If the integrated dose reading was
logged, this line displays the accumulated time
in minutes since the intern dose was
started.
l Iine 7: This line displays the clock
time (24 hour format) and the date (month,
day, year) that the reading was taken.
l LineWIhislineisblank.
If the location
specified has not
!~!!!!111111111
. . . . . *...
beenusedfordata
INVALID
logging yet, the
IK24TION
display looks like
lllllllllllllll
. ..*...........
Figure 8.
Flgm 8.
hvalidI.malionDisplay.
*
, 6.6 Recycle data display
The recycle data display mode displays
both ratemeters, the scaler, the recycle count
status, the tinq the detector number, the
Joggion code and the number of samples
stored in the logging memory. The display is
shown in Figure 9. ‘Ihe meaning of each line
follows:
Page 8

lVt2350 Data Logger
l Lines 1
thmugh 4: The
same as in the
normal display
(section 6.1).
l Line 5:
This line displays
the current cycle
that is active, the
?. OuC/s RAT
, I
I
0
SCL
10 SEC SCL
CYC 1 OF 1 ROOO
DELAY 60 SEC
0:05
(DFT #)
(UICATI~N) #ooo
F@un2 9.
Recycle Dab Display.
number of cycles
in each recycle, and the number of recycles
that have been completed.
l Iine 6: ‘Ihis line displays the delay
time left. before the next cycle is started.
l Line 7: The clock time is displayed at
the lefi side of this line. It is in the 24 hour
format. The colon blinks on and Off at
one-half second intervals. If the battery
voltage 4.4 volts or below, the message ‘LO
BAT alternates with the time at 1 second
intervals. The right part of the line shows
which detector setting is being used by the
M2350.
l Line 8: The location code is displayed
in this line. The number of logged readings is
displayed at the right side of this line.
If the recycle mode is disabled, lines 5 and
6 will display the message ‘RECYCLE
DISABLED’.
6.7 Recycle setup display
‘The recycle setup display mode displays
the setup information for the recycle counts.
This consists of the number of cycles enabled,
the detector each cycle will use, the delay
time before the data is logged, the logging
mode, and the number of recycles. The
display is shown in Figure 11. The meaning
of each line follows:
l Line 1:
This line shows
that the recycle
countsetupdatais
3NmENABLED
beiig displayed.
4NurEwmwD
5NmExaBm
l Line 2:
‘Ihis line shows
the setup informa- figure 10.
tion for cycle 1. WcIe Sebup Display.
The cycle number
is displayed fust. Next is the detector used by
this cycle. The next number is the delay time
before the data is logged. The last number on
this line is the logging mode that will be used.
lIines 3 thmugh 7: ?Ihese lines display
tbe same information as line 2. If the particu-
lar cycle is not enabled, the message ‘NOT
ENABLD is displayed instead of the cycle
information.
l Iine 8: The number of recycles
allowed is displayed here.
paw 9

M23!50 DataLogger
‘Ihe M2350 is controlled by either the
optical wand or the serial I/O. All commands
to control the M2350 can be executed by
either the wand or the serial I/O. Please refer
to Sections 11 and 12 for fbrther information
regarding the setup and operation of the
optical wand and the serial I/O.
All wnmands need to be termhted with
a carriage return and then a line feed. The
tzanmands are all upper case. If lower case
commands are used, they will not be
Ilzcow.
In the command descriptions below, the
lower case characters in the COMMAND line
are integer values; f is a single precision
floating point numb, and a,b are alphanu-
meric string. With the alphanumeric string, the
following charactw are valid for use with the
serial I/O and the optical wan& ‘0’ through ‘9’,
‘A’ through ‘Z’, and the characters -./+?4 and a
space. The character ‘$’ is reserved for use
when multiple commands are to be sent at one
time or as the separator code when dumpmg
the logged readings. The chamcter ‘*I is
reserved as the start and stop charackr for the
bar codes. If only the serial I/O is to be used,
the following characters are also valid; the
charades !“#&‘(),:;<=>?@o]A-’ {I}- and ‘a’
are supplied by the user. The lower case
tllrougll ‘2.
letters under the RESPONSE & VALID
CHARACTERS are the values returned in
response to the read commands. The variable
types are as follow 4hmQo,s,6Qw,%,y,z
NOTE
ILL COMMANDS MUST B
ATEDWITHACAR
RIAGE~TURNANDALJNEFEED.‘IHECOMh’IANDS
MUST BE UPPER CASE
NOTE
i
page10

M2350 Data Logger
7.1 !ktconlnmKk
This type of command will send data to
the M2350 which allows a setting in the
M235otobechanged.
SET FUNC’IION COMMAND VALID CHARACTERS
Calibration constant
Clock date
Clock time
Cycle count
Cycles per recycle
Detectordeadtime
Detector model
Detector serial number
High voltage
Integrated dose alarm
Location code
Numher of recycles
o-&Tx&g(m~ of pA)
scaler alarm
Scaler c43unt time @cc)
‘Ihreshold
User I.D. number
wmdow
Slkm
SQWXYZ
SRX
SLf
lb
Na
Hx
Pf
I.2
SYX
ox
Jf
Ki
I%
TX
Ii
wx
(Me-37 If I lOe38)
(1 I m I 12) month
(1 Sd 531) day
(OIyI99)year
(OIh123)hours
(O,<mI59)minutcs
(1 I w 5 6) cycle number
(OIxI15)detectornumber
(0 I y 265535) seconds delay
(OIz<2) logmode
(1 IXG)
(Me-37 If < lOe38)
(alphanumeric, 9 char)
(alphanumeric, 9 char)
(05x52500)
(l&37 If I lOe38)
(alphanumeric, 10 char)
(1 5xs250)
(OIxUOO;ON,OF’F)
(lb37 <f I lOe38)
(OSx999999)
(0 5x165535)
(01x~lOOO)
(alphanumeric, 15 char)
(O1x51OOO;ON,OF’F)
page 11

MB!30 Data Logger
7.2 Contml commands
This type of command may or may not
require data with it and will cause the M2350
to do something.
cmTRoL FUNCTION
COMMAND VALID CHARACTERS
Analog recorder mode
Ax
(05x15)
0 5 decade log
Baudrate
Bx
1 1OOk cps 111 scale
2 1Ok cps 111 scale
3 lkcpsfblhcale
41OOcpsfbllscale
5 10 Ml scale cps
(0 1. x 5.6)
0 96oobaud
1 48OObaud
224OObaud
3 12OObaud
46oobaud
5 3oobaud
611Obaud
Calculate cal constant
Calculati: dead time
~=r~$n”y
Enable counter displays
SSK
S!3R
SEX
Logareading
Ratemeter response
Gix
(OSxS7)
0 All counter displays off
1 Ehble ratema display
2 Enable scaler display
3 Enable ratemeter and scaler
display
4Enable integrated dose
display
5 Enable
ratemeter and in-
tegrated dose display
6 Enable scaler and integmted
dose display
7 l&able all counm displays
(0 5 x I 2)
0 LQgI-tmeer
1 Logscaler
2 Log integrated dose
(05x51)
page12

Recall detector settings
Reset alarms
Select display mode
Select display multiplier
Select display time base
SBX
Select display units
set log location to view
startscalercoutnt
Start the recycle
stop Scala count
Stop the recycle
store detector settings
zerointegrateddose
zero-
Dx
X
0 slow response
1 fast response
(OlxIlS)
SVDX
SMX
!3UX
(OIxS6)
0Normal display
1 Parameters display
2 Detector display
3 Alarm display
4 Logged data display
5 Recycle data display
6 Recycle setup display
(OIx14)
0Autorange
1 Micro
2
Milli
3 none
4
Kilo
(OIxS2)
0Seconds
ll%lW
2 Hours
(OSxS9)
0(r)ad
1 @WY
ip
4 0
5 uu
6 (D)isintegrations
;: LEE?@
9Ek+n.
Y
page 13

lid2350 Data Logger
7.3 Read commands
‘These commands will cause the desired
datatobesentout~serialvo.
READFUNCTION COMMAND
RESPONSE & VALID
CHARACTERS
Analog recorder mode RA
Bar graph ratemeter
Baud rate
RT3
Battery voltage
calibration constant
Clock date
Clock time RST
Cycle counf
Cycles per recycle
Detector dead time
RSL
k0: 5 decade log
x=1: 1OOk cps @ll scale
~2: 1Ok cps 111 scale
x=3: lk cps Ml scale
x74: 100 cps 111 scale
x=5: 10 cps 111 scale
f
Margraphratem~
X
?FOZ%OObUd
x==l: 4800 baud
~2: 2400 baud
~3: 1200 baud
X4:6OOlXUd
x3: 300 baud
x76: 1lObaud
f
f!4xaay voltage
f
+calibration constant
Q4Y
m=mMh
WY
y-year
4m
h==hours
nmlinw
(1 SwW6)cyclenumber
%YJ
x=+&ctornumbzr
y=seconds delay
Flog mode
x
x=number of cycles per
If”y”1”
Head time
page 14

M2350 Data Logger
Detector model
Detector Serial number RN
Digital ratemeter
Dump logging memory
Enable uxn&x displays
RSE
t
a
a=model number (up to 9
Char)
FLserial number (up to 9 char)
ff4igital ratemeter
dWwvWwAc,co,~
a=I.D number (up to 15 char)
s-sample number
b=location code (up to 10
Char)
m==month sample logged
d=day sample logged
y=year sample logged
h=hour sample logged
mnimte sample logged
d==detector number
Flogged count data
+count time of logged data
o=logging mode
FM2350 status when data
logsed
NOTE:
The ‘$’ character signifies that
a logging location% data has
been sent. The variable string
except for ‘a’ is repeated for
each logging location. When
alloflhedatahasbeensen~
the ‘$’ is followed by a car-
riagereturnandalinefeed.At
9600 baud, dumping all 250
&implestak~about3minutes.
X
* All counter displays off
x=1: Enable ratemeter display
x=2: Wle scak display
~3: Enable mtemeter and
scaler display
x=4 Enable integrated dose
display
~5: Enable ratemeter and in-
tegrated dose display
x=6 F5nable scaler and in-
tegrated dose display
\
~7% Enable all counter
displays
page 15