Ludlum Measurements 2350 User Manual

Ludlum Model 2350

DATA LOGGER

Revised: July 1993

Serial No. 106622 and Succeeding

Serial Numbers

Software Version # 37102n16

.

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cl

LUDLUM

501

OAK ST., P.O.

svuEmTER,Tx78558

9l-FAx:9lW3!%672

MEASUREMENB,

60X

INC.

810

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WAND

71.1

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15.3
18: 44 DET#O2

uR/hr

0

60 SEC

UR

218 MIN DOS

#OO

0 *o

RAT

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Et

DOS

1

MODEL 2350

DATA LOGGER

SERIAL I/O

(/@zqJ)

o o

I

AUDIO

DIVIDE

ACKNLDGE

1oo

VOLUME

xxxxx

J

1

@

Ludlum
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

ike

for 90 days.

misuse,

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.

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.

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

Measurements,

This warranty is voided in instances of improper installation abuse, mishandling,

fkight

damage, or repair by unqualified persons.

uqXration

Inc.

warmnts the,products

RECEMNG CONDITION EXAMINATION

RETURNOFGOOIISToMANuFAcllJRER

will expedite the return of your equipment.

covered in this instruction manual to be

thee

d&ct-

’

:

5olOAKS~

SWEEIWA’IE& TX 79556

91~23~5494

FAX

915-235-4672

M2350 Data Logger

1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. DESCRIPTION OF FRONT PANEL CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . .

4. DESCRIPTION OF FUNCTIONS . . . . . . . . . . . . . . . .

l

. . . . . . . . . . . . . . . . . . . .

5. OPERATINGPROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.1Installingbatteries.. ...........................................

5.2operatingtheinstrurnent

........................................

5.3P~orminga”coldstart” ........................................

6. DESCRIPTION OF DISPLAY MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.1 Normal display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.2ParameWs-d&play..

6.3Detectordisplay

...........................................

..............................................

6.4Alarmdisplay.. ...............................................

6.5Loggeddatadisplay ............................................

6.6Recycledatadisplay
6‘7

Recycle setup display

...........................................

........................................... 9

1

1
2
2
5
5

5

5
6
6

6
7
7

8

8

7. DESCRIPTION OF COMMANDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.1setcommands

7.2control~~

7.3Readcommands

8.

COMMANDUSAGE

8.1

Scanthrou~thedisplaymodes

8.2Setvariousdetectorsettings

8.3Readvariousdetectorsettings

9. APPLICATIONS

9.1 General M2350 setup

9.2CountratemeterwithaNaIscintillator

9.3Micro-RmeterwithaNaIscintillator..

9.4SurveymeterwithaG-Mdetector..

9.5Lqgingreadhgswithmultipleprobes

9.6Viewloggedreadings

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10
11

12
14

18

19
20
21

22
22

22
24
26
27

31

page i

10.

SPECIAL,

OPEBA’I’@G MODES _ .i:t, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34

10.1 Recyclemade

10.2 Dead time calibration

IO;3

CMibration constant

11.

12.

PAR’TSL,IST

EIANDHEL,DTERMINALOPERATION

11.1Terminalsetup

11.2TerminaIoperatibn;.
OPTICALWANDOPERATION..

12.1

Optidtiuse

12.2Barcode generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . ..A.....................~

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34
36

38
41

41
41

42
42

42

43
43
43

45
48

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.

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.
readings

sixteen different detectors. The logged reading

contains the count

detector number, location code, sample

number, status, time, and type of reading.

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,

setting, scaler count time, threshold, and
window.

batteries even when the M2350 is turned
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.

The

M2350

provides a click per event

The data logging memory can store the

fi-oin

250 samples and the setups for

da&

count time, date,

‘Ihe

ratemeter alarm

&tin&

scaler alarm

The memory is powered by the M2350

off.

l

HEH

. SmsrxlWIYz

adjustable from

calibrated to

l

INPUTIMPEDANCE 1Ok

l Dl!XlEKR

II 11

C.

l DISPUW8lineby15chamcterLCD

WJLTAGEz

With threshold at 100,

1.5mV

1OmV.

cKBNEKR

0

to 2500 volts.

to

35mV,

display with EL backlight.

f&ory

Zkries

paw 1

l

AUDIa

Click per event through built
in unimorph speaker with adjustable volume
and selectable divide by 1, 10, or 100.

l

*

’

all calibrations done through the bar

CAUBMTION

CZCINMU:

None;

code

input or RS-232 serial I/O.

l

BA’lJERIE

batteries in

separate

Four

“D”

cell flashlight

externally accessible

compartment.

l

BATJJRY HFE

hours with Duracell MN1300

From 50 hours to 90

batteries

M2350

Data Logger

dependiig upon use of EL backlight. 4.4
volts is considered the end point of the battery

“D”

life. When the batteries reach this point’ there
is about two to four hours use left.

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

backlit liquid crystal

l

DFLEcI[1DR: seiies “C”

8 line by 15 character

display.

connector for

detector.

0 Impedance:
o Ballast resistor:

l

F0WERz Twoposition switch to turn

1ok.

1M

used to adjust the vohune of the speaker.

to acknowledge and silence the alarms.

power to instrument on or off.

l

BACKLZGHF

Turns LCD backlight

used to read “3 of 9” code bar codes.

on or off.

l AUDIO DIVIDE Three-position

signals to interface to computers or ternGnals.

switch used to control audio divide by:

l

WEIGHR 2.3 kg (Sibs) including four

cells.

l

FINISH Computer beige polyurethane

o

1: Provides 1 click per event

.

o 10: Provides 1 click per 10 events

o

100: Provides 1 click per 100

events

l

VOUTME:

l

ACKNUKEz

l WAND: Connector for optical wand

l SERIAL

One-turn potentiometer

Pushbutton switch used

IlO:

Connector for RS-232

4. DEERFIlOl’T OF

l

cJlxmmm:

available.

They

all use the same input but

FuNcIIc)INS

l-here are four counters

provide different types of readouts.

0 Digital Ratemeter:

Provides a
digital readout of the detector count rate.
‘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.

page

o

Scaler: Providesatimedcounter
for accumulating the detector counts far a
preset time. The count range is up to
999,999 counts with count times

second to 65,535 seconds in one-second

r

increments.

0 Integrated

Dose:

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.

2

f.?om

1

Provides a

M2350

Data

Log&r

l CIDCKTheM2350hasarealtime

clock that keeps the time (24hour format) and

programmable up to 2500 volts in one-volt
increments.

date.

l

USER

cation code that can be used to identity each
instrument. The characters can be numbers or

letters.

l

DEIKI0R

sixteen different detector setups can be loaded
into the M2350. Once the setups are loaded a
single

co-d

ID: A fifteen-character identifi-

SELKIlaS:

Up to

is all that is required to

function allows the detector settings to include
the model number of the detector. The model
can be up to nine
include both numbers and letters.

function allows the detector serial number to
be saved so there will be a record of which

detector took which data.
change setups to a different detector. The
following items are stored for each detector
setup:

The digital ratemeter can be programmed to

auto-range or be forced into using a multiplier

of micro,

o Detector calibration constant
0 Detectordeadtime

0

Detector high voltage
0 Detector model number
0 Detectorserialnumber

except

ratemeter can have a time base of seconds,

mini,

0 Display range multiplier
o Display time base
0 Display units

o

Integrated

dose alarm setting
0 overload current
0 Ratemeter alarm setting
0 scaler alarm setting

0

Scaler count time

ratem­grammed

oad, @MY9 NW9 (W, 09, -mg),

@)isintegratioion, (C)aunts, (Ci/cn?),
wcti.

o Threshold

o Window

almns for the digital

integrated dose. When a level is equal to or

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.

exceeds the alarm

turned on and a status message is displayed in

the appropriate display line. The audio output

can be turned off by pressing the
NLDGE button

continue to display the alarm message until

the alarm condition is no longer present.

l DEIlZIORMODElLNUMB~This

characters

l

DEIKTORSEEUALNUMB~UMBER:s

.

DJSPLAY

milli,

l

DISPLAY

Ci/d

or

l DISPLAY

RANGE

none, or kilo.

TIME

and

hours.

UNlTS: The

and integrated dose can be

long and can

MMlXIPLWt

BASE:

For all units

E%q/cn?, the

digital

digital

$ro-

to readout in the following units:

or

l

ALf!RMS:

There are programmable

ratemeter,

setting

the audio output is

scaler, and

ACK-

‘Ihe

status message will

l DETEcroR DEAD

M2350 allows for the correction of dead time

1OsseS.

‘Ills The

detect when the detector is drawing excessive
current and the output
not be accurate. It is programmable up to 40.0

l

DEIlXXX

HIM

VOLTAGE:

Supplies the bias voltage to the detector. It is

p4 in 0.1

disabled if desired.

page 3

l

OlvBImD

/LA

increments. It also can be

CURRENTP.

fi-om

the detector may

used to

l

0-W

M23!50

If the count rate is

Data Logger

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.

.

sINGLJ3m

ANALYzEFt

The SCA can be disabled to allow for gross
counting or enabled to allow energy discrim­ination. Both the threshold and window are

rrosle

up to 1000 in integer

.

l

LQGGlNG MEMORY:

samples may be stored

inthe

Up to 250

internal logging

memory and be retrieved later. The following

data is saved:

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

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

allows the readout of a specified data sample
without requiring the complete memory to be

dumped.

seconds the scalar counted for. For the
integrated dose, it is the number of
minutesthattheintegrateddosehasbeen
accumulating.

mode where automated logging can-be

pe~%ornxd

f?om

0

Date: The date is stored as month,

day, yf=*

of the 6 logging cycles can be setup to log the
digital
and then wait from 1 to 65,535 seconds before

0 Detector

number:

This is the

number of the detector (from 0 to 15)

whose settings were loaded into the data

loggeratthetimethereadingwastaken.

karting the next logging

mode can be programmed to continue until the

data logger memory is full or for a set number

of recycles.

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

0 Sample 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 con­tains 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

Logging mode:

Ibis

is the

identifier that records the type of reading

whether it was the digital ratemeter,

scaler, or integrated dose.

l luxx;ED DATA

l

RECYCIE The M2350

DISPLAYz This

has a

recvcle

The recycle cycle can consist of

1 to 6 logging cycles per recycle. Each

rakmekr,

scaler, or integrated dose

cycle.

The recycle

page

4

lM23!50

5.OPER4'IlNGl'RCXXDuREs

Data Logger

5Mnstallingbatteries

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

$llle

seconds and then self
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.

37102N16

MEMORY TEST OK

CJ?UTESTOK

1.

check.

M235O's

removed long enough for the memory to be

lost or if the user desires to reset the memory

before setting up for specific detectom.
the hand held knninal or

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

resume operation

with all settings

set to their default

Values.

*

,

5.3

Performing a ‘kold statt”

NOTE

A cold start wil clear all detectors

P

and also clear the logging memory.

OncedoneJhedata~be

recoVered.

A cold start is needed to clear the

memory if the batteries have been

To do a cold start, enter

IV2350

will

MEMORY TEST OK

SSRwith

the

optical wand

mu TEST

either

OK

COLDINITIALJZE

Cold

Start

Execute.

MZ350 Data Logger

6. DESCFUPIlm OFDISPLAY MODES

There are seven different display modes.

‘Ihey are described below.

displayed here. The ‘SCL’ message is always
on and indicates that this is the scaler timer.

6.1 Nomal display

When the scaler is not counting the time
displayed is the count time for the scaler. If

The normal display mode displays all four

counters,

the time, the detector number,

the scaler is counting, the time displayed is
the time remaining until the count is done.

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.

If there is a digi-

0.

I'(

OuC!s

"

RAT

0

10

SEC

0.

out

4MIN DOS

0:05

(IXXTION)

iIgure

3.

DEX'#OO

#000

NOrmal DisplaY,

sa

SCL

tal ratemeter

alarm, the message alternates between ‘RAT
and ‘AIR at one-second intervals. If there is

a detector overload, the message ‘OVER

LOAD!’
reading. If there is an overrange, the message
‘OVER RANGE!’ alternates with the digital

ratemem.

alternata

with the digital ratemeter

If both overload and overrange

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
second intervals.

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.

the left side of this line in the 24 hour format.

‘Ibe

second intexvals. If the battery voltage is 4.4
volts or lower, the message ‘LO BAT
alternates with the time at one second inter­vals. The right part of the line shows which
detector settings are beiig used by the M2350.

conditions exist, the overload message is used.

* Iine2:

Thefivedecadelogbargraph
is displayed on this line. The count rate is
always in counts per second
covers f?om 1 cps to

1OOk

cps.

‘Ihe

bar graph

in this line. The number of logged readings is
displayed at the right side of this line.

*

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

\

ratemeters, the scaler, the high
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:

when the scaler is counting.

l

Line

4:

Tbe

scaler count time is

l

Line 5:

l

Line

l

Iine

‘Ihe

integrated dose readout is

‘ALR’

at one

6:

The integrated dose count time

7:

The

clock time is displayed at

colon blinks on and off at one-half

l Iine

8: The location

&de

is displayed

6.2 I’amneten display

The parameters display mode displays both

voltas

the

paw

6

MZ350

Data Logger

l Lines 1

thmgh 4:

‘Ihe

same as in the

normal display
(section 6.1)

l Line 5:

The detector high
voltage and Gin­dow are displayed
on this line. If the
window is off, the window setting is replaced
by the message ‘OFF’.

0.

OuC/s

1 I I l I I

RAT

0

sa

10 SEC sa

0 W= OFF

E;=5.5

T= 100

0:05 l/01/90

(USER ID)

Rgure 4,

I%EUE&XS DI@~~Y.

?he detector serial

number is dis­played on this

line.

The
this line displays
the code for the
display units. The
middlepartofthis

line displays the multiplier

l Iine 6: The battery voltage and

threshold

are

displayed on this line. If the

part of this line displays the code for the

display time base.

battery voltage is 4.4 volts or lower, the

message ‘LOW replaces the bat&y voltage.

high voltage and window setting. If the

l

Line 7: The clock time is displayed at

the left side of this line. It is in the 24 hour

format.

second

“Ihe

colon blinks on and off at l/2

intervals. If the battery

voltage is 4.4
volts or lower, the message ‘LO BAT
alternates with the time at 1 second intervals.

window is off, then the window setting is
replaced by the message ‘OFF’.

count time in seconds and the

setting.

‘Ihe right part of the line shows the date as
.rnonth

day, year.

bration constant used by the digital ratemeter

l

Une 8: The user identification code is

displayed on this line.

and the integrated dose.

is kept in counts per second internally and is

divided by the caIibration constant to provide

6.3

Detectordisplay

the actual readout.

l Line 3:

D)ZX'EmR

#00

MODEL

SER.#

U=7

M=O TB=O

HV=

0 w= OFF
CT= 10 T= 100

CC=1.000000e+00

9

Line 4:

lefi

part of

LT=O.000000e+00

Qlne

5.

ktector Display.

code.

The right

l

Line 5: This line displays the detector

l

Line

6:

This

line displays the

scaler

threshold

l

Line 7: This

line displays the

‘Ihe

digital ratemeter

cali-

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-

deadtime.Thisnumb&susedtocorrectfor

dead time losses caused by the detector and

the M2350 dead time.

*

,

ing of each line follows:

l

Iine 1: This

line displays the current

detector whose settings are bemg used.

alarm and overload settings. The display is
shown in Figure 6. The meaning of each line
follows:

l

Line 2: The detector model number is

displayed on this line.

detector whose settings are being

paw

7

l

Line 8: This line displays the detector

6.4

Ahum disdav

The Alarm display mode displays the

l

Line

1: This

line displays the

curnznt

e

M23!50

Data Logger

l Line 2:

This line shows
that the alarm set­tings are being
displayed.

l Line 3:

DEX'ECIQR

RAT LOOOe+09

Sal 999999

DOS

OVEiF!LOAD=

The digital

mtemeter

setting

alarm

is &+

Ggure

AhIlllDiSplrlly.

played on this

line.

l line

4: The

scaler alarm setting is dis-

played on this line.

l Iine

5: The

integrated dose alarm is

displayed on this line.

l Iine

6: This line is blank.

#00

l.OOOe+09

OFF

6.

l Line 4:

The type of data

logged is

played here

dis-

DEX'FCIOR

#00

RA-

(ratemeter, scaler,

integrated

i&e).

l Line 5:

The count that

0:05 l/01/90

I

figune

7.

W~~Di@aY.

I

was logged is dis­played here.

l

Iine6:

logged, this line is blank.

Iftheratemeterreadingwas

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 line

of

p.A

is

disabled,

7:

The overload setting in tenths

is displayed on this line. If the overload

the setting is replaced with the

time (24 hour format) and the date (month,
day, year) that the reading was taken.

message ‘OFF.

l Iine

6.5 Lagged

8:

Jhis

daba dispiay

line is blank.

specified has not

beenusedfordata

Tbe lo&

logged data

data display mode displays the

tirn

the

selected

sample. The

logged data consists of the sample number,

the location

code,

the detector

USBCS,

the

logging yet, the

display looks like
Figure 8.

logging mode, the count, the count time, the

time, and the date. ‘Ihe display is shown in

Figure 7.

l Iine 1: The sample number is dis-

‘Ihe

meaning of each line follows:

*

,

played in this line.

.

W

in this line.

2: The location code is displayed

both ratemeters, the scaler, the recycle count
status, the

Joggion code and the number of samples

l Iine3:Thedetectorwhosesettings

were used to log the data is displayed here.

stored in the logging memory. The display is

shown in Figure 9.
follows:

l Iine

l LineWIhislineisblank.

7: This

line displays the clock

If the location

!~!!!!111111111

. . . . .

*...

INVALID

IK24TION

lllllllllllllll

. ..*...........

Flgm

8.

hvalidI.malionDisplay.

6.6 Recycle data

display

The recycle data display mode displays

tinq

the detector number, the

‘Ihe

meaning of each line

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

, I

I

0

RAT

SCL

10 SEC SCL
CYC 1 OF 1 ROOO
DELAY

0:05

60 SEC

(DFT #)

(UICATI~N) #ooo

F@un2

Recycle Dab

9.

Display.

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:

number of cycles

in each recycle, and the number of recycles

that have been completed.

This

that the recycle

l Iine 6:

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

intervals. The right part of the line shows

which detector setting is being used by the

M2350.

‘Ihis

line displays the delay

with the time at 1 second

countsetupdatais

beiig displayed.

‘Ihis

the setup informa-
tion for cycle 1.

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.

6.7 Recycle setup display

‘The recycle setup display mode displays

l Line 1:

line shows

3NmENABLED
4NurEwmwD

5NmExaBm

l Line 2:

line shows

figure

10.

WcIe Sebup Display.

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.

tbe same information as line 2. If the particu­lar cycle is not enabled, the message ‘NOT

ENABLD

If the recycle mode is disabled, lines 5 and

information.

6 will display the message ‘RECYCLE
DISABLED’.

allowed is displayed here.

l Iines

3 thmugh 7:

?Ihese

lines display

is displayed instead of the cycle

l Iine 8: The number of recycles

paw 9

M23!50 Data Logger

‘Ihe M2350

is controlled by either the
optical wand or the serial I/O. All commands
to control the
either the wand or the serial

M2350

can be executed by

I/O.

Please refer

to Sections 11 and 12 for fbrther information

regarding the setup and operation of the
optical wand and the serial

All

wnmands

need to be

I/O.

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 supplied by the user. The lower case
letters under the RESPONSE &

VALID

are integer values; f is a single precision
floating point
meric string. With the alphanumeric string, the
following
serial I/O and the optical wan& ‘0’ through

‘A’

space. The character
when multiple commands are to be sent at one
time or as the separator code when dumpmg
the logged readings. The
reserved as the start and stop charackr for the
bar codes. If only the serial I/O is to be used,
the following

charades
tllrougll ‘2.

CHARACTERS are the values returned in
response to the read commands. The variable

types

are as

follow 4hmQo,s,6Qw,%,y,z

numb,

charactw

and

a,b

are alphanu-

are valid for use with the

‘9’,

through ‘Z’, and the characters -./+?4 and a

‘$’

is reserved for use

chamcter ‘*I

characters

are also valid; the

!“#&‘(),:;<=>?@o]A-’ {I}-

is

and ‘a’

NOTE

ILL COMMANDS MUST B

ATEDWITHACAR

RIAGE~TURNANDALJNEFEED.‘IHECOMh’IANDS

MUST BE UPPER CASE

NOTE

i

page10

M2350

7.1 !ktconlnmKk

This type of command will send data to

the

M2350

M235otobechanged.

which allows a

SET FUNC’IION COMMAND VALID CHARACTERS

setting

in the

Data Logger

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

scaler alarm

Scaler

‘Ihreshold

User I.D. number

wmdow

c43unt

time

pA)

@cc)

Slkm

SQWXYZ

SRX

SLf
lb

Na

Hx

Pf

I.2
SYX
ox

Jf

Ki
I%
TX
Ii

wx

(Me-37

(1 I m I 12) month
(1 Sd

(OIyI99)year
(OIh123)hours
(O,<mI59)minutcs

(1 I w 5 6) cycle number

(OIxI15)detectornumber

(0 I y

(OIz<2)

(1
(Me-37 If <
(alphanumeric, 9 char)

(alphanumeric, 9 char)

(05x52500)

(l&37

(alphanumeric, 10 char)
(1

(OIxUOO;ON,OF’F)
(lb37
(OSx999999)

(0

(01x~lOOO)

(alphanumeric, 15 char)

(O1x51OOO;ON,OF’F)

If I

531)

day

265535)

logmode

IXG)

If I

5xs250)

< f I

5x165535)

lOe38)

seconds delay

lOe38)

lOe38)

lOe38)

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

Analog

FUNCTION

recorder

mode

Baudrate

Calculate cal constant

Calculati:

dead time

COMMAND

Ax

Bx

SSK

~=r~$n”y
Enable

counter displays

Logareading

Ratemeter response

S!3R
SEX

Gix

VALID CHARACTERS

(05x15)

0 5 decade log

1

1OOk

cps

111

scale

2

1Ok

cps

111

scale

3

lkcpsfblhcale

4 1OOcpsfbllscale

5

10 Ml scale

cps
(0 1. x 5.6)
0

96oobaud

1

48OObaud

2 24OObaud

3

12OObaud

46oobaud

5

3oobaud

6 11Obaud

(OSxS7)

0 All counter displays off

1 Ehble

ratema

display

2 Enable scaler display

3 Enable ratemeter and scaler
display

4 Enable 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

Dx

X

0 slow response

1 fast response

(OlxIlS)

Select display mode

Select display multiplier

Select display time base

Select display units

SVDX

SMX

SBX

!3UX

(OIxS6)

0 Normal display

1

Parameters display

2

Detector display

3

Alarm display

4 Logged data display

5 Recycle data display

6

Recycle setup display

(OIx14)

0 Autorange

1

Micro

Milli

2
3

none

Kilo

4

(OIxS2)

Seconds

0

ll%lW

2

Hours

(OSxS9)

(r)ad

0

1

@WY

set log location to view

startscalercoutnt

Start the recycle
stop

Scala

count

Stop

the

recycle

store detector settings

zerointegrateddose

zero-

ip
4

0

5

uu

6

(D)isintegrations

;: LEE?@
9Ek+n.

Y

page 13

7.3 Read commands

lid2350

Data Logger

‘These

commands

will cause the desired

datatobesentout~serialvo.

READFUNCTION

Analog recorder

mode

Bar graph ratemeter
Baud rate

Battery voltage

calibration constant
Clock date

Clock time

Cycle

Cycles per recycle

Detector dead time

counf

COMMAND

RA

RT3

RST

RSL

RESPONSE & VALID

CHARACTERS

k0: 5

decade log

x=1: 1OOk

~2:

x=3:

x74:
x=5:

cps

1Ok

cps

111

lk cps

Ml

100 cps
10 cps

111

@ll

scale

scale

111

scale

scale

scale

f

Margraphratem~

X

?FOZ%OObUd

x==l: 4800 baud

~2:

~3:

2400

1200

baud

baud

X4:6OOlXUd

x3:

300 baud

x76: 1lObaud

f

f!4xaay

f

+calibration

voltage

constant

Q4Y
m=mMh

WY
y-year
4m

h==hours
nmlinw

(1 SwW6)cyclenumber

%YJ

x=+&ctor numbzr
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

Digital ratemeter

Dump logging memory

Enable uxn&x displays

RN

RSE

a

a=model number

(up to 9

Char)
FLserial

ff4igital

number (up to 9 char)

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
d==detector
Flogged
+count

sample logged

number

count data

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

car­riagereturnandalinefeed.At
9600

baud, dumping all 250

&implestak~about3minutes.

X

*

All counter displays off

x=1: Enable ratemeter display

x=2:

Wle scak

~3:

t

Enable

display

mtemeter

and
scaler display

x=4 Enable integrated dose

display

~5:

Enable ratemeter and in­tegrated dose display

x=6

F5nable

tegrated dose display

~7%

Enable all counter

scaler and in-

\

displays

page 15

High voltage

RH

Ligh

voltage
Integrated dose
Integrated dose alarm
Integrated

do& her

(min)

Locatkh code

Ne

of recycles

Ratemeter alarm

‘Ratemeter;response

Read

display

R&a+lisplay

multiplier

time base

Read display units

R.ecalldetector~gs

RCI

RP

RL

RSY

RJ
RG

RSMX

RSU

*

RD

!

f

+integrated dose

f

&integrated

dose alarm setting
x

x=integrated

dose timer

a

a=location

code (up to 10

Char)

X

x?ilumber

Overload (tenths of

x=overload

of

ITcycles

setting

allowed

@)R%y

y=o: overload disabled

y=l:

overload enabled
f

jL+amaa alarm
E&o:

slow response

x=1:

fast

response

~0:

Auto

x=1:

Micro

x72: Mllli

x=3:

x74:

Kilo

t=O:

Seconds

x4:

x=2 Hours

X

range

none

Min-

setting

x=0: (r)ad
x=1: (G)ray
x=2(REryl)

x=3: (Sv)

x4 (RI)
XFS:

(ckg)

x=6:

(D)isintegAtions
x=7: (C)aunts
x=8: Ci/d
?F!mqd

X

’

Remaining count

time (set)

X

?FEmaEngscal~count time

page 16

SC&

scaler alarm
Scaler count time

Soitware

version

Threshold

User I.D. number

’

Window

IL42350

status

(se@

RCS

RK

RF

RT

RI
RW

X

xwaler contents

X

x=scaler

alarm setting
Xer count time

kersion

number (up to 16

Char)
kthreshold

k1.D. number (up to 15 char)
%Y

x+ndow
y=O:

window off

y=l:

window on

k2350 statlls

8

bit number

defjned

as
follows
Bit 0: n&meter alarm
Bit 1:

scaler alaxm

Bit 2: integrated dose alarm

Bit 3: scaler overflow
Bit 4.: integrated dose
overflow
Bit 5: low battery
Bit 6:

ovenrange

Bit 7: overload
NOTE:

‘Ihe

display is in

decimalf~andmustbe

converted to a bii 6

quivaknt.

the bit is
the bit is “not

If a bii bit is 1,

“seP;

if the bit is 0,

set”.

page

A7

READ FUNCTION COMMAND VALID CHARACTERS

8.

tXMMANDUSAGE

M23!50

Data Logger

The M2350

customize
applications. This is done by issuing a series cmmands to configure and use the

ummands allow the user to

the

M2350

for particular

specific operating needs. The following
examples show how to use the

M2350

Ivl2350.

of commands to the M2350 to set it up for the The examples are set up to list the function

desired, the actual M2350 command, and the

M2350

response.

‘Ihe

examples also do not
show the carriage retum and line feed that are
needed at the end of the command. They ate
not shown because their entry method depends
on the type of entry equipment used.

NOTE

ALL COMMANDS

MSJS

Ar

E TERMINATED WITH A

CARRIAGE PETURN AND A LINE FEED. THE COM-

MANDS MUST BE UPPER CASE

NOTE

8.1Scanthroughthedisplaymodes

The following command examples will

show the various display modes of the

M2350.

FUNCTION
Select the normal display mode.

Select the parameters display

mode.

Select the detector display mode. SVD2
Select the alarm display mode.

page 18

For a detailed explanation of the displays,

refa

to section 6.

COMMAND

Svlp

\

SVDl

M2350

The

RESPONSE

M2350

display should

now look like Figure 3.
The

M2350

display should

now look like Figure 4.
The

M2350 display

should

now look like Figure 5.

svD3

The

M2350

display should

lM2SODataLogger

Select the logged data display SW4
mode.

Select the recycle data display SW5
mode.

Select the recycle setup display

mode.

8.2

Set various detector settings

SW6

now look like Figure 6.
The

M2350

display should
now look like Figure 7 or
Figure 8.
The

M2350

display should
now look like Figure 9.

The

M2350

display should
now look like Figure 10.

The following command examples will

show the how to set some of the detector

FUNCTlON

Select the

pammeters

display

co-

SvDl

mode.

Set the high voltage to

9OOV.

Set the threshold to 500.

Turn the window on.

Set the window to 50.
Turn the window off.

Set the clock to
Set the date to

11:23.

12W90.

Select the detector display mode.

Set the calibration constant to

1,000,000.

Set the calibration constant to 1.

Setthedeadtimeto25pS.

SetthedeadtimetoOyS.

Set the model to 44-2.

settings. The ccmmands not shown work in
the same fashion.

M2350

The

RESPONSE

M2350

display should

now look like Figure 4.

The high voltage should now

read 9oov.

The threshold should now read

500.

The

window should now be
on and display a number.
The window should now read

50.

The window should now be

Off.

The time should now display

11:23.

The date should now display

12/12/90.

The

NJ2350

display should

now look like Figure 5.
The calibration constant
should now be

1.m.

The calibration constant
should now be

1..

‘Ihe dead time should now be

2.5OOOOOe45.

The dead time should now be

0.
The model should now display

44-2.

page19

M23!iO

Data Logger

Set the serial number to
Select the alarm display mode.
Set the ratemeter alarm to Jle4

10,000.
Set the scaler alarm to 5647.
Set the integrated dose alarm to

1223.

N12Z3

svD3

KS47

P2Se5

250,000.

Set the ratemeter alarm to le9.

Set the scaler

Set the integrated dose alarm to

M.

Turn the overload on.

Set the overload to

Twn the overload off.

alann

to 999,999.

5.0@

Jle9

K999999

Ple9

The serial number should now
display
The
now look like Figure 6.
The ratemeter alarm should
now be

The scaler alarm should now

1223.

M2350

display should

1.OOOetO4.

be5647.

‘l’he

integrated dose alarm

should now be

The

ratemeter alarm should

nowbe1.OOOeHB.

The sealer alarm should now

he999999.

The integrated dose alarm
should now be
The overload should now be
on and display a number.
The overload should now read

2.5OOei-05.

1.M.

50.

The overload should now be

Off.

8.3

The following command examples will
show how to read some of the detector
settings. These examples assume a termbal is
being used that can display the data sent

Read

vtious

FUNCTION

Select the parameters display

mode.

Set the high voltage to 500V.
Read the high voltage.
Turn the window on

Set the window to 50.

detector

setiims

COMMAND

SVDl
l%XM?

RH

mN

from the M2350. A command will be given to
set the setting to the desired value and then

the setting will be read to verify the value.

The responses to the read commands
explained in section 7.

M2350

‘Ihe

now look like Figure 4.

The high voltage should now
read
The

‘9oo’outtheserialpoti

The window should now be
on and display a number.
The window should now mad

RESPONSE

M2350

Nov.

M2350

display should

will now send

are

50.

page20

M23!50 Data Logger

Read the window setting.
Turn the window

OK

Read the window setting.

The following examples show how to set

RW

WOFI?

RW

set, the user identification number will be pro-

up and use the M2350 in various situations. grammed,

The possible uses range

from

a simple

ratemeter to a data logging system using

cleared. The following settings will be

entd

multiple probes.

0 date

9.1 General

MI2350

setup

o time =
0

In this example, the

M2350

will be

prepared for further set up. The clock will be

The

M2350

will now send

‘50,l’ out the serial port.

The window should now be

Off.

The

M2350

'50,o'

out

will now send

the

serial port.

and the logging memory will be

=Dec.

14,

1990 (12/14/90)

2:55PM

user id = UN123456

FUNCTION

Select the parameters display

co-

SVDl

mode.

Set the date to
Set the time to

12/14/90.

14:55

(2:55PM).

Set the user I.D. number to

m1u14/90

sTl4:55

IUN123456

UN123456,

Select the normal display mode.

9.2

Count mte

meter

witi

a Nal scintilla

for

SVDO

*

,

time correction and the calibration constant

equal
entered,theywillbesavedasdetector#1.The

For this example, the M2350 will be set

following settings will be

up to use an LMI 44-2 1” x 1” NaI scintilla-
tor. This example also assumes

general

MB50

setup has already been done.

that the

The display is in counts per minute with live

M2350

The

RESPONSE

M2350

display should

now look like Figure 4.

‘Ihe

date should now read

12/14/90.

The time should now

read

14:55.

The user identification should

now read UN123456.

The

M2350

display should

now look like Figure 3.

to 1. After the settings have been

enteredz

0 High voltage = 700v
o

Threshold = 1003) Window =

Off

o Window = off

page21

0

Scaler count time = 30

seconds

0 Display units = counts

o

Display time base = minutes

0 Display range multiplier =

auto
o Detector dead time =
o Detector calibration cunstant

=

1

2OpS

0 Detector model =
0 Detector serial number =

PRO73738

0 Ratemeter alarm setting =
0 scaleralarmsetting=m
0 Integrated dose alarm setting

=le9
0 overload current = off

LMI

44-2

l&

l?‘UNCTION

Select the parameters display

mode.

Set the high voltage to 700V.
Set the threshold to 100.
Turn the window
Set the scaler

seconds.
Select the detector display mode.

offI

count

time to 30

set the readout units to counts.

Set the readout time base to

mill-.

Set the readout range multiplier

toauto.

Set the detector dead time to SUe-5

2o@s.

Set the
Set the model to
Set the serial number to

PRO73738

Select the alarm display mode.

Set the ratemeter alarm to le9.

Setthescaleralarmto999999.

Settheinte~dosealarmto

l&.

Turn the overload

calibrati&

constant to 1.

IMI

44-2.

off.

COMMAND

SVDl

IWO0

Tloo

F30
SVD2

su7

SBl

SMO

SCl

MLMI44-2

Nl?RO7373??
SW&
Jle9

i99!ww

Ple!J

.-

M2350

The
now look like
The high voltage should now

read 700v.

The threshold should now read

100.

The window should now be

RESPONSE

M2350

display should

Fig&

4.

Off.

The count time should now

read3oseJcmds.

The

M2350

now look like Figum 5.

‘Ihe units should now read 7.

‘The time base should now

read 1.

The range multiplier should

now read 0.

The dead time should now

read

2.000000e-05.

The calibration constant
should mad 1.

‘Ihe

model should read

44-2.

The serial number should now
read PR073738.
The

M2350

now look like Figure 6.
‘The rakmekr alarm should
now read

‘Ihe scaler alarm should now
read!299999.

‘The integrated dose alarm
should now read
The overload should now be

display should

LMI

display should

1AMOe-W.

MOOe-KB.

page 22

M2350

Data

Save the settings as detector 1. SPl
Select the normal display mode.

Load detector #l settings.

SVDO

Dl

Logger

Off.

The

settings have now been
saved as detector

The IV2350

#l.

display should

now look like Figure 3.

This step is not needed, but is

included to show how to recall

the settings of detector

#l.

The setup of the M2350 for the count rate dose.
meter is now complete. The M2350 can now

beusedasacountratemeterorascaler.~~

following commands will show how to start

not effect the settings saved under detector
because the save
will not be used in the following example.

the scaler, stop the scaler, change the count
time, and zero the ratemeter and integrated

FUNCTION

Select the normal display mode.
Start the scaler counting.
Stop the scaler.
Set the count

the

to 10 seconds.

Start the scaler counting.

zerotherat~.

Reset the integrated dose.

coMM44ND

SVDO
C

E

FlO

C

Z

SlZ The integrated dose and the

*

The

changes made to the count time will

parameta

M.2350

The

M2350

command (SPx)

RESPONSE

display should

now look like Figure 3.

‘The M2350

should now start

cQunting.

lhe

M2350

should stop coun­ting.

‘The

count time should read 10

seconds.

‘The M2350

should now start
counting.

‘Ihe

digital

barograph

both

rateme

ratemeter should

zm

and then resume

and the

normal operation,
integrated dose timer should

zeroandthenresumenormal
operation.

#l

9.3

MicmR

meter with a

NaI t&till&r

provide the direct readout in R per hour.

the settings have

For this example, the

II42350

will be set
up to use an LMI 44-2 1” x 1” NaI scintilla-

tar,

This example also

geneml Me2350

setup has already been done.

assumes

that the

saved as detector

will be entered

The display is in R per hour with live time

correction and the calibration constant is set to

page 23

been en-

#2.

The following settings

0

High voltage =

o

Threshold=1OO

o Window = off

Mer

they will be

7OOv

M2350

0

Scaler count time = 30
seconds

o

Display units = R

0 Display time base = hours

o Display range multiplier =

auto
o Detector dead time = 20~s

0 Detector calibration constant

=

1.16elO

Data Logger

0 Detector model = LMI 44-2
0 Detector serial number =

PRO73738
0 Ratemeter alarm setting =
0 scalerdarmsetting=999999

o

Integrated dose alarm setting

= le9

0 overload current = off

le9

FuNCTlON

Select the parameters display
mode.
Set the high voltage to 700V.

Set the threshold to 100.
Turn the window

Set the scaler count time to 30
seconds.
Select the detector display mode.

Set the readout units to R
Set

.the

readout time base to

hours.

Set the readout range multiplier

to auto.

Set the detector dead time to

ofI

2ops.

Set the calibration constant to

1.16elO.

Set the model to LMI 44-2.
Set the serial number to

PR073738.
Select the

alarm display mode.

Set the ratemeter alarm to le9.

Set the scaler

Set the integrated dose alarm to

le9.

Tum the overload off.

ahn

to 999999.

COMMAND

SvDl

Hmo
no0

F30

su4
SB2

sue-5

Scl.16elO

MLlw44-2

svD3

*

Jle9

’

SKgggggg

Ple9

M2350

The
now look like Figure 4.
The high voltage should now

RESPONSE

M2350

display should

read7OOv.

The threshold should now
read 100.
The window should now be

Off.

The

count time should now

read

30

seconds.

The

M2350

now look like Figure 5.
The units should now read 4.
The time base should now
read

2.

The range multiplier should
now read 0.
The dead time should now
read

2.000000s05.

The calibration constant
should read

The model should read LMI

display should

1.16elO.

44-2.

The serial number should now
read PR073738.
The

M2350

now look like Figure 6.
The ratemeter alarm should
now read 1.000&09.
‘The scaler
read999999.
‘l-he integrated dose alarm
should now read
The overload should now be

Off.

display should

ahnn

should now

1.OOOetO9.

page 24

M2350

Data Logger

Save the settings as detector 2.
Select the normal display mode.
Load detector #2 settings.

SP2

SVDO

D2

The setup of the M2350 for the micro-R
meter is now complete. The operation of the

M2350

is the same as in the application

above.

9.4

Survey

meter with a GM detector

For this example, the M2350 will be set

up to use an LMI 44-38 G-M detector. This

examplealsoassumesthatthegeneralM235O

setup has already been done. The display is in
R per hour with live time correction and the

calibration constant is set to provide the direct
readout in R per hour. After the settings have
been entered, they will be saved as detector

#3.

The following settings will be

enteredz

The settings have now been
saved as detector
The

M2350

#2.

display should
now look like Figure 3.
‘This step is not needed, but is

included to show how to recall

the settings of detector

0

High voltage = 900v

0

Threshold = 500

0

Window

0

Scaler count time = 6 seconds

0

Readoutunits=R

0

Readout time base = hours

0

Readout range multiplier =

auto

0

Detector dead time =

0

Detector calibration constant

=7.64e7

0

lletector model = LMI 44-38

0

Detector serial number =

= off

lOOuS

PRO73796

0

l3ammx

0

scaler alarm setting = 999999

0

Integrated dose alarm setting

alarm setting = le9

=le9

0

overload culrent = off

#2.

FUNCTlON

Select the

parame&s

display

COMMAND

SVDl

mode.

Se

the high voltage to

9OOV.

Set the threshold to 500.

H900

*-

Turn the window off.

Set the scaler count time to 6

I%

seconds.
Select the detector display mode.

SetthereadoutunitstoR

SVD2

su4

Set the readout time base to SB2

hours.

page25

M2350

The

RESPONSE

M2350

display should

now look like Figure 4.

The high voltage should now

read 9oov.

The threshold should now

Rad500.

The window should now be

Off.

The

count

time should now

read 6

The

seconds.

M2350

display should
now look like Figure 5.
‘The units should now read 4.
‘The time base should now

read 2.

MZ350 Data Logger

FUNCTION COMMAND
Set the readout range multiplier

SMO
to auto.
Set the detector dead time to

SLIe-4

loops.

Set the calibration constant to

SC7.64e7

7.64e7.

Set the model to LMI 44-38.
Set the serial number to

PR073796.
Select the alarm display mode.

Set the ratemeter alarm to le9.

Set the scaler alarm to 999999. SK999999
Set the integrated dose alarm to

le9.

Turn the overload 0%
Save the settings as detector 3.
Select the normal display mode.
Load detector #3 settings.

MLlw44-38

NPRO73796

svD3

JYle9

Ple9

SF.3
SVDO

D3

Id2350

RESPONSE

The range multiplier should
now read 0.
The dead time should now
read

1.m04.

The calibration constant
should read 764e7.
The model should read LMI

44-38.

The serial number should now
read PR073796.
The

M2350

now look like Figure 6.
The

ratemeter

now read
The scaler alarm should now
read999999.

The

integrated dose alarm
should now read
The overload should now be

Off.

The settings have now been

saved as detector

The

M2350

now look like Figure 3.

This step is not needed but is
included to show how to recall

the settings of detector

display should

alarm should

l.OOOe+O9.

1.m.

#3.

display should

#3.

The setup of the

M2350

for the G-M

reading will be saved as well as the integrated
survey meter is now complete. The operation dose accumulated during the logging proce­of the M2350 is the same as in the application
above.

9.5

For this example, the settings

Iqging tt3dhgs

with multiple probes

from

sections 9.1 through 9.4 need to be entered

into

the

M2350

fist.

This sets up the M2350
to allow for background readings as well as
higher readings. This example will use the

LMI

readings outside of a room Then the

44-2

probe to take 4

background

LMI

44-

dure. The following logging procedure will be

used:

l

SetuptheM235Oforthebackgmund

e-

,

0

Recall the settings of the LMI

44-2

0

Clear the logging memory.

0

ConnecttheM44-2.

0

Clear the integrated dose.

(det #2).

38probewillbeusedtotake4readingson

the inside of the room In both cases, each

page26

Mz3!50 Data Logger

. rag

theloom

tin? backgmlmd readings olltside

Move to the north side of the

o

room.

0

Enter the location code for
the 1st reading (OUTSIDE

0

Log the scaler reading.

o

Move to the east side of the

NJ

mom.

0

Enter the location code for
the 2nd reading (OUTSIDE E).

0~Logthescalerreading.

o

Move to the south side of the

room.
Enter the location code for

0

the

3rd

reading (OUTSIDE S).

0

Log the scaler reading.

o

Move to the west side of the
room.
Enter the location code for

0

the

4th

reading (OUTSIDE

0

Log the sealer raiding.
Enter the location code for

0

the integrated dose reading

(OUT DOS).

o

Log the integrated dose.

W).

0 Connect the LMI 44-38.
o Clear the integrated dose.

IkgtbeHngsinthemom

0 Move to the north wall of the

room.

0 Enter the location code for

the 1st reading (INSIDE
Log the ratemeter reading.

0
o

Movetotheeastwallofthe

N).

room.

Enter the location code for

0

the 2nd reading (INSIDE E).

0 Log the ratemeter reading.
0

Move to the south wall of the

room.

0

E&r

the location code for

the

3rd

reading (INSIDE S).

0

Logthe

o

Movetothewestwallofthe

lllbmeb

reading.

ITxm.
0

Enter the location code for

the

4th

reading (INSIDE W).

0

Logthe l-atama

Enter the

0

k&ion

reading.

code for

the integrated dose reading

m IDosE)*
o Log the integrated dose.

o RecallthesettingsoftheLMI

44-38

l SetuptheMZ35Oforlx3ckgmund~

(det #3).

FUNCTlON COMMAND

Select the detector display mode.

SVD2

Loadthesettingsfordet&or#2. D2

Select the normal display mode.

SVDO

page27

M2350

The

RESPONSE

M2350

display should

now look like Figure 5.

The M2350

display should

now show the settings for

de&xtor #2.
'Ihe M2350

display should

now look like Figure 3.

M23!5ODataLogger

Clear the logging memory to SSC
allow for new data.

Connect the

LMI

44-2 and then

HZ

clear the integrated dose.

F’UNCTION

Move to the north side of the

COMMANJI

UXJ’ISmE N

room and enter the location code.

Log the scaler reading.

Move to the east side of the

Ql

IKW’JBJDEE

room and enter the location code.
Log the scaler reading.

Move to the south side of the

Ql

IDUISIDE S

room and enter the location code.
Log the

scaler

reading.

Ql

*

Move to the west side of the
room and enter the location axle.

Logthescalerreadin~

I&ISIDE

.Ql

W

The

logging

memory

should
be cleared and the sample
number should be 0.

The

integrated dose and the
integrated dose timer should
he 0.

M2350

RESPONSE

The location code should
change to OUTSIDE N.
The scaler will start to count.
Remain at the same position

until the count is completed.

When the scaler stops coun-

ting the reading is saved as

sample 0 and the sample
counter increments to 1.

The

location code should
change to OUTSIDE E.

Thescalerwill~tocount.

Remain at the same position
until the count is cumpleted
When the scaler stops count­ing, the reading is saved as
sample 1 and the sample
counter increments to 2.

‘The

location code should
change to OUTSIDE S.
The scaler will start to count.
Remain at the same position
until the count is compkted.
When the scaler stops count-

ing the reading is saved as
sample 2 and the sample

counterincrementsto3.

The

location code should
change to OUTSIDE W.
The scaler will start to count.
Remain at the same position
until the count is completed
When the scaler stops count­ing the reading is saved as
sample 3 and the sample

page28

FUNCTION

page29

Now set the location code to

indicate the outside integrated

dose.

COMMAND

IBUTIDCB

M2350

txxlnt~in~entsto4.

The location code should
change to OUT

RESPONSE

DOS.

Lag the integrated dose reading.

@

The

intqpted
beloggedassample4andthe

sample counter increments to

5.

l

SetupthelW235Oforthemomnxuliqp.

FUNCTION COMMAND M2350 RESF’ONSE

Select the detector display mode. SVD2

The

M2350

display should

now look like Figure 5.

Load the settings for detector

#3.

D3

‘Ihe M2350

display should

now show the settings for

Select the normal display mode.

SVDO

detector

‘Ihe It42350

#3.

display should

now look like Figure 3.
Connect the LMl44-38 and then SIZ
clear the integrated dose.

The

integrated dose and the

Intel

dose timer should

he 0.

dose will now

FUNCTION COMMAND

Move to the north wall of the JINSIDEN

room and enter the location code.

After waiting for the

ratemeter

b

QO
reading to stabilize, log the

ratemeterreading.

Movetotheeastwallofthe

LINSIDEE

room and enter the location code.

Aiter waiting for the

n&meter

QO
reading to stabilize, log the

ratemeta

Move to the south wall of the

reading.

UNSIDES

room and enter the location code.

M2350

‘Ihe

RTZSPONSE

location code should
change to INSIDE N.

Themkmeterreadingissaved

as sample 5 and the sample

countsin~entsto6.

The location code should
change to INSIDE E.

Theraknderreadingissaved

as sample 6 and the sample

--to7

it?titicm

change to INSIDE S.

code

;;hou.ld

FUNCTION

After

waiting for the ratemeter
reading to stabilize, log the

ratemeter IEading.

Move to the west wall of the
room and enter the location code.

After

waiting for the ratemeter

readhg

to stabilize, log the

ratemeterreading.

Now set the location uxle to

indicate the inside integrated
dose.
Log the integrated dose reading.

9.6 View bgged nadings

COMMAND M2350

CP

RESPONSE

The ratemeter reading is saved
as sample 7 and the sample

counterincrementsto8.

IANSIDE

W

The location code should
change to INSIDE W.

Ihe

Qo

.

ratemeter reading is saved

as sample 8

and the sample

counter increment to 9.

LaNlDm The location code should

42

change to IN
The integrated dose will now

DOS.

he logged as sample 9 and the
sample counter incxments to

10.

For this example, the settings

fi-om

sections 9.1 through 9.4 need to be entered

into

the It42350

f.

Then the example in
section 9.5 needs to be done. ‘Ibis will store
the

trcaiings

M2350.

in the logging memory of the

FUNCTION

Select the logged data display

COMMAND M2350

SVIM

mode.

Select the sample to view.

Select the sample to view.

RESPONSE

‘Ihe M2350

display should

now look similar to Figure 7.
In all of the following com­mands, this display will be

The following data is
displayed.
Location

code:

OUTSIDE N

Detector#:O2

Type of reading: SCALER
Logged count: 1.357ooo&o3
Count time:

30

seconds

Time: 15:21

Date:

12/14&O

User I.D.: UN123456
The following data is
displayed
Location

code:

OUTSIDE E

page 30

Select the sample to view.

Select the sample to view.

Select the sample to view.

SW2

SW3

SVIA

*

Selectthesampletoview. ’ SVI5

Detector #: 02
Type of

reading. SCALER

Logged cmlnt: 1.29mooeto3

Count time: 30 seconds

Time: 15:25

Date:

lU14/90

User I.D.: UN123456
The following data is
displayed,

Location code: OUTSIDE S

Detector#:O2

Type of reading SCALER
Logged
Count

The:

Date:

cxmtlt:

1.387oo0&3

time: 30

seconds

15:30

lU14l90

User I.D.: UN123456
The following data is
displayed
Location

code:

OUTSIDE W

Detector#:O2

Type of

Lqgged

county 3osectmds
The: 1534
Date: lU14/90

reading:

count:

SCALER

1.327OOOetO3

User I.D.: UN123456
The following data is
displayed.

Location code:

qetedm#: 02

OUT IDOS

Type of reading: IN-

TEGRAIIED

DOSE

Lqgged c4xmt: 4.027148e-06
counttime: 17lninutes
The:

Date:

12/14/90

15:38

User I.D.: UN123456
The following data is
displayed.

Lmation code: INSIDE

lllewtm#:

03

N

Type of reading:

RATEMETER
Logged camt: 1.432OOOe-03

count

, Date:

time:

Tii:

12/14&O

15:51

User I.D.: UN123456

page31

M2350 Data Logger

FUNCTION

Select the sample to view.

Select the sample to view.

Select the sample to view.

Select the sample to view.

COMMAND

SVJ.6

svL7

SVLS

*

,

M2350

The following data is

displayed

Location

Detector #: 03

Type

RATEMETER

Logged

Count time: Time: 1552

Date:

User I.D.: UN123456

The following data is

displayed.
Location code: INSIDE S
Detector #: 03

Type

RATEMETER
Logged count:

03Count

Time:
Date:

User I.D.: UN123456

The following data is

displayed.

Location code:

Detector #: 03

RATEMETER
Logged cault:

User I.D.: UN123456

RESPONSE

code: INSIDE E

of reading:

cza.lnt: 1.7831548-03

12/14&O

of reading:

1.629368e

time: 30 seconds

15:53

12/14l90

INSIDE W

Type

of reading:

1.312739e-03

Count

time: The: 15:54

Date: 12/14/90

The following data is

displayed.

Location

code:

IN IDOS
Detector #: 03
Type of reading: IN­TEGRATED DOSE
Logged count:
count

time:

1.251648e-04

5 minutes

Time: 15:55

Date:

lU14l90

User I.D.: UN123456

page 32

10.

modes. The first mode is the recycle mode.
The other two modes are calibration routines.
The recycle mode allows the M2350 to be set

up to automatically log data The

calibration routine is used to calculate the
system dead time of the
detector.

used to calculate both the system dead time

and the calibration constant for direct readout
in the user chosen units.

SPlEIALOPEFtA’IlNGM0DIB

The

Ii42350

has three special

M2350

‘Ihe

second calibration routine is

operating

fust

and the

must be done first. This is described below.

‘Ihe

Figure 10. The following data will be entered
to prepare for the recycle mode. It is assumed
that the detector settings are already entered

into the M2350.

during the recycle counts but its settings are
changed for the different counts. The
for detector 1 are for gross counting. The
settings for detector 2 will provide for energy
discrimination by enabling the SCA.

To use the recycle mode, the recycle setup
recycle

setup

display is shown in

Only one detector is used

setting

10.1 Recycle

mode

The recycle mode is used to allow

automatic data logging. The M2350 can be

programmcdtohavef?om1to6countsfor

each cycle of the recycle. The individual
counts can be programmed as to which
detector is used, the delay time before the

countislogged,andthetypeofcounttobe

logged (ie. ratemeter, scaler, or integrated
dose).

The M2350

can be programmed to run for
up to 250 recycles or until the logging

memory is Ml (250 samples), which ever is

smaller. As an example, if the logging
memory is clear and the recycle cycle consists
of 1 count,

then

250 recycle cycles can

be

done. If the cycle consists of 3 counts, then a
maximum

of-

83

l/3

recycle

cycles

An

be

described below.

done.

0

The recycle mode will be set
for 3 cycles.

0

There will be 50 recycle cy­cles.

0

count 1willbewithdetector

1 and will delay for 10

seconds and then log the

scaler count.

0

Count2willbewithdetector

1 and will delay for 60
seconds and then log the

ratemeterreadin~

0

Count3willbewithdetector

2 and will delay for 90

seconds and then log the
ratemeterreading.

‘Ihecommandstodothesetupare

F'UNCTION

Select the recycle s&up display
mode.
Enterthenumberofcountsper
recycle cycle.

Enter the number of recycle
cycles.

page 33

COMMAND

SVD6

SR3

SY50

M2350

The

RESPONSE

M2350

display should
now look similar to Figure 10.
The 1st 3 counts should show
settings and the last 3 should
show ‘NOT

ENAE3LEIY.

The number of recycles should
now read 50.

FUNCTION COMMAND M2350 RESPONSE

The

Enter the data to set up count 1 SQl
for detector

#l,

a delay of 10

110

1

display for count 1 should

show the entered data.
seconds and then log the scaler
count.
Enterthedatatosetupcount2 SQZ1600
for detector

#l,

a delay of 60

The display for count 2 should

show the entered data.
seconds and then log the
ratemeter reading

Enterthedatatosetupcount3 SQ32900

for detector

#2,

a delay of 90

The display for count 3 should

show the entered data.

seconds and then log the

ratemeterreading.

The M2350 is now set up to recycle.

I@2350

is connected to the detector and then

Ihe

then wait for 60 seconds and then log the
ratemeterreading.

the start recycle command is given This will

start the recycle mode. With the particular
settings entered, the operation will be as fol­lows:

0

The

for

M2350

dete&or

will load the

settings

#l and then wait for 10
seconds. At the end of the delay, the
scaler will be star&l When the scaler

times out, the scaler count will be logged.

o The settings for detector #l will

cle are described below:

then be loaded again The M2350 will

FWNCTION COMMAND

Select the recycle data display

SVDS

mode.

Start the recycle mode.

Stop the recycle mode.

SSF,

SSE

,

o

The

settings for detector #2 will

then be loaded. The M2350 will then

tit

for 90 seconds and again log the n&meter
reading.

0 The M2350 will then repeat steps

1 through 3 until 50 complete cycles have

been done.

lhecommandstostartandstoptherecy-

M2350 RESPONSE
The M2350

display should
now look similar to Figure 9.
This will start the recycle
mode.

The ‘RECYCLE
DISABLED’ message will be
replaced by the cycle counter

and the delay timer.

The

recycle number will start at 0
and increment after each
complete cycle.
This command will stop the
recycle mode of operation

page 34

lvl23!joDataLogger

10.2 Dead

time

calibration

for the various samples and the status
messages. Figure 11 shows the display when

The dead time calibration routine is used

to calculate the dead time of the M2350 and

this routine is first entered. The meaning of
the lines are described below.

the detector. The minimum dead time will be
about
circuitry. This routine uses the
method for calculating the dead time. The
background count is taken then source 1 is
counted, then
count&
counts are taken, the dead time is calculated.
When the dead time calibrate routine is
started, the current dead time is saved and the

18pS

due to the signal conditioning

then

source

source 2 is counted. After these

1 and source 2 are

2-source

Ibis line displays

which sample is

beiig

‘Ibis line displays
the bar graph
ratemeter.

dead time is then automatically set to 0. When
the routine is finished, the user has the choice

of using the new dead time or the dead time

that was used before the routine was star&L

To achieve accumte results, the following

and 4:

are

count is in progress.

conditions need to be met.

o Have the background as low as

ground count.

possible.

displayed here.

and sample 2 is displayed here.

Sizes.

0

Use sources of approximately equal

0

The combmed count rate from both

sources needs to be high enough to

provide about 10% to

losses.

20%

dead time

displayed here.

.

Linel:

counted.

Ei?KxmD

. Lim2:

SAMPLE1

SMPL 1+2
SAMETE2

Qute 11.

:

0
0

Ddmme

l

Lines3 cali-

Display.

These lines

used to display the count time when a

l

Line 5: This line displays the back-

l Iine6:Thecountfiomsamplelis

l Iine7:Thecountf?omsamplel

l Iine8:Thecountf?omsample2is

I

0 When moving the sources, make

sure the stationary source is not touched or
moved as small changes in the source
position could cause errors.

background count

isstarkx&thedis-

play changes to
that shown in

0

Keep the sources far enough

an&r

shielded enough from the detector to not
cause significant background changes.

Figure

count

count down to 0

while the back- &um

The use of the dead time calibrateroutine

is explained below. This will show the
displays and describe the functions. The dead
time calibrate display is only displayed when

this routine is enabled. The bar graph

ratemeter is displayed along with the counts

ground count is

updatd At the

end of the count
time, the count time lines will be cleared and
the top line of the display will read ‘SAMPLE

1’. After this count is comple@ the top line

will then read ‘SAMPLE 1+2. After this count

page 35

When the

12. The

time will

COUNTING

BACKGRND

12.

Mame

h-&Q-

6SECONDS

0

M23!50

Data Logger

is complete,

Ibe

top line of the display will

The following example shows the

read ‘SAMPLE 2’. command

when the last

count is complet-

ed, the

M2350

will calculate the
system dead time
and display it in
line 3 of the
display as shown
in Figure 13. Line

1 will ask

ifthis Dead’IIme

sATA3 IIUMEER?

I I I ’ I

IYIY

2.140105e-05

&AmF?ND
SANPLE
sr@L 1+2
SAMPm

Egule13.

1 54676

95114

2 60062

409

operating point of the detector should already

have

ban

the count time and other detector information.
When the routine is displaying the new dead

time and asking if the M2350 should save it,
the display should look similar to Figure 13.

dead time should &z&s Wpla~.

be

saved. If so,
the user

tior~ The

used by the

entecs

a ‘Y in response to the clues-

new dead time is then saved and

M2350.

If the response is
anything else, this dead time is discarded and
the previous value is kept.

seouen~~

to use this routine. The

determined and entered along with

FUNCTION COMMAND
Select the dead time calibrate

SSD

routine

Start the background count

Place SOURCE 1 by the detector

and then start the count.

Without disturbing SOURCE 1,

C

c *

C

\

place SOURCE 2 by the detector

aIsoandthenstartthecouIlt.

M2350

The M2350

RESPONSE

now displays the
dead time calibrate display,
saves the current dead
and sets the dead time to
The

MI2350

is now ready to

time,

OpS.

take the background count

This command will start the
count cycle. At the end of the
count time, the counting mes­sage will be cleared and the

count saved as the

back-d

count and the display wilI then

ask for SAMPLE 1.

This

command will start the
count cycle. At the end of the
count time, the counting

message will be cleated and
the count saved as sample 1
count and the display will then

ask for SAMPLE

‘Ihis

command will start the

1+2.

count cycle. At the end of the

count

time,

the counting

message will be cleared and

page 36

FUNCTION

COMMAND M2350

RESPONSE

Without

disturbing SOURCE 2, C

remove SOURCE 1 and then start

the count.

If the dead time looks reasonable, Y
tell the

M2350

to save the new

dead time.

If the dead time does not look

N
reasonable, tell the M2350 to ig­nore the new dead time and
recall the previous dead time.

the count saved as sample

1+2

count and the display will then
ask for SAMPLE 2.
This command will start the
count cycle. At the end of the
count time, the counting
message will be cleared and
the count saved.as sample 2

count. The

M2350

will

calculate the dead time and

display the results asking if

the

It42350

should save the

new dead time.

‘This command will replace the

previous

new dead time. The

dead time with the

M2350

will then return to the display
mode that was active before
the dead time calibrate routine
wasstalted.
‘lhiscommandwillrecallthe

previous dead time and

diicard

The M2350

the new dead time.

will then return to

the display mode that was

active before the dead time
calibrate routine was started

tion constant and dead time or the values that

wereinusebeforetheroutinewasstarted

The calibration constant routine is used to

calculate the calibration constant and the dead

umditions need to be met:

time of the M2350 and the detector. The mini-

mumdeadtimewillbeabout18@Muetothe

signal conditioning circuitry. This

routineY&es

two readings taken at known points to

calculate the dead time and the calibration

constant.Thefirstreadingistakenatapoint

wherethedeadtimelossesarelessthan2%

and the second reading is taken at a point

wherethedeadtimelossesarebetween30%

and 65% When the routine is finished, the
user has the choice of using the new calibra-

page 37

To achieve accumte results, the following

0 Use count times long enough to

allow for good counting stat&&x with the

low sample. Aminimum of 2000 counts
for the low sample is recommended.

0

The low sample count rate should

provide a dead time loss of less than 2%

‘Ihe

o

high sample count rate should

provideadeadtimelossofbetween30%

and 65%

MZ350 Data Logger

The use of the calibration constant routine
is explained below. This will show the dis­plays and describe the functions. The calibra­tion constant display is only displayed when
this routine is enabled.

‘Ihe

bar graph

updated. At the

end of the count
time, the count ’
time lines will be

cleared and the

ratemeter is displayed along with the counts
for the various samples and the status mes­sages. Figure 14 shows the display when this
routine is Cst

enti

The meaning of the

lines is described below.

.

Iinel:

This

line displays

thesampletobe

entered

or the

sample being

. Iine2:

This line displays
the bar graph

ratemeter.

LmgALFqNT

I’

I’

L CAL O.OOOe+OO

H CAL

Lx>SMPL

HI SMPL

Ggure

Cdibmtion

mw~

O.OOOe+OO

14.
Constant

0
0

sample count

completed, the

I

M2350 will calcu-

late the calibration
constant and the
system dead time

. Lines3

and 4: These lines display the count time

whenacountisinprogress.

and display them
in line 3

4

shown in tiuh.sDispla~.

l

Cal point.

Line 5: This line displays the low

Figure 16. Line 1
will ask if these values should be saved. If

so&e

l Iine

Cal point.

6: This line displays the high

question. ‘The new values are then saved and
used by the M2350. If the response is any­thing else, the new values are discaKted and

l

Line

7:

The uxmt

fkom

the low cal

the previous values are kept.

point is displayed here.

command sequence to use this routine. The

l

line

8: The

Cal

point is displayed here.

count from

the high

operating point of the detector should already

have been detemined and entered along with

*the count time, the display time base, and

’

15.

other detector information. When the routine

is displaying the new values and asking if the

M2350 should save them, the display should

look similar to Figure 16.

When the calibration points arc entered

and the low sample count is

started,

the
display changes to that shown in Figure

‘Ihe~cmnt time will count down to 0 while the

low sample count is

30

SECONDS

COUNTING

L

CAL 2.000e-03

Flglm 15.
CWbtationCorhntIaw

Sample

Count

When the hi

is

,YF

VF’

lYT1.475020e-04

CC

1.490383e+08

&rd

line

of the diilay as

L CAL

I

IFTgum 16.

0Wmtion ~n&urt

2.000e-03

user enters a ‘Y in response to the

The following example shows the

J

page 38

FUNCTION COMMAND

M.2350

.

RESPONSE

Select the calibration constant

calculate routine.

Enter the low sample point.

Enter the high sample point.

Place the detector at the low
sample point and start the count.

Place the detector at the high

sample point and start the count.

If the new
reasonable, tell the

save them.

If the new values do not look
reasonable,

ignore them and recall the

previous values.

telI

values

the

look

M2350

IV2350

to

to

SSK

2.OOOE3

2.OOOEl

C

C

Y

N

The M2350 now displays the
calibration constant calculate
display, saves the currenf dead
time, and sets the dead time to

OpS.

The M2350 then asks for
the low sample point.
This will en@ the low sample

point. The

ask for the high sample point.
This will enter the high
sample point The M2350 will
now ask for the low sample.

l%iscommandwillstartthe

count cycle. At the end of the
count time, the counting
message will be cleared and

the count saved as the low

sample count The M2350 will
now ask for the high sample.
This command will start the
count cycle. At the end of the
count time, the counting

messagewillbeclearedand

the count saved as the high

sample count. The
calculate the calibration con­stant and the dead time and
display the results asking if
the

M2350

new values.

‘This command will replace the
previous caliiion constant

anddeadtimewiththenew
values. The M2350 will then

retumtothedisplaymodethat
was active
bration constant calculate

routinewasfstartd

Thisuxn.mandwillnxallthe

previous

anddeadtimeanddiscardthe
new values. The M2350 will
then

mode that was active before
the calibration umstant calcu-

lateroutinewasshrted.

M2350

should save the

befare

calibration constant

rctum

to the display

will now

MY2350

the cali-

will

page 39

11.

HANDm~ALoPml-loN

The M2350 can be controlled through the

serial I/O. One method of doing this is by
using a hand held terminal.
describes the set up of the &mitral and then
its operation.

11.1 Teminal setup

‘The terminal setup should only need to be

done when using a new tenGnal for the first
time. If the M2350 is left on with the terminal
plugged in and the batteries

may need to be done also. The following
settings need to be programmed into the
terminal:

0 Baud=9600

o Data bits = 8

0 Parity=ignore
0 Display pe = enabled
0 Repeat=fast

o Echo=enabled

0 Handshake = enabled
0

Self test = disabled

To program the above values into the

terminal, press the CTRL and SHIFT keys at

the same time. While holding the keys down
press the Fl key. This then allows the

programmertobesetup.PresstheF2key

until a parameter needs to be changed. To
change the parameter, press the Fl key until
the mrrect setting is displayed. When all

This

go.dead,

section

the setup

parameters have been set, press the F5 key to
store the new parameters in the terminal.
These settings are retained even when the
power is turned off and the

unplugged.

to program the key that will provide the line

feed

key and SHIFT key at the same time. While
holding these keys down, press the F2 key.
The display should ask which function key to

define. Press the F5 key.
then shoe the current hex value assigned to

the key. Press the Fl key to change the value

and then press the

‘A’

value. The keypad is now fully programmed

and ready for use.

desired keys to enter the command and then

pressing the ENTER key and then the F5 key.

The termhal will give a short beep when a
key is pressed. If the beep is long and heard

the entire time the key is pressed then there is

a

lhe

displayed on the terminal display. If a wrong
key is pressed, then the backspace key will
reposition the cursor and allow the correct key
to be pressed.

terminal

The

fd

step to program the terminal is

chara&r.

key. Now press the F5 key to save the new

11.2 Teminal operation

The terminal is used by pressing the

communic&tions

message that is sent to the

To do this, press the

The terminal

‘0’

(zero) key and then the

problem with the M2350.

M2350

is

CTRL

will

is

page40

M23!50

The

It42350

WAND input.

can be controlled through the

The

use of the optical wand

and the bar code format are described below.

Data Logger

the scan is not too slow and that the scanning

speed

codes.
easier to pmctice the
because the shorter length will usually allow

12.1Qdkalwandwe

thespeedtoremainmoreun&rm.

remains uniform while scanning the bar

The shorter bar codes are

generally

scanningprocedurewith

To use the wand, connect it to the M2350.

Then hold the wand about 10” to

20”

fium

vertical and place the tip of the wand about

l/4”

away
read. Scan the bar code rapidly with a uniform
speed. The

whenthebarcodeisrecognized.Ifthescan
speedwastooslowortoofastJhebarcode

will not be recognized. Generally, the majority

of problems with reading the bar codes are
because the scanning speed is to slow. The

tirn

the start of the label to be

MI2350

will give a short beep

code has special data formatting requirements

to produce a valid bar
consists of a start character, the comma@ the
check sum chamcter, and the stop chamcter.

‘Thestartandstopchamcterisan’*‘andcan

notbeusedanywhereelseorthebarcodeis

notcon-ectJhechecksumchara&risused
toverifjrthatthedatareadiniscorrect.

barcodescanbescannedlefitorightorright

to left.

For

fi&

time users, it is common to have

difliculty getting good scans. Make sure that

carriage return and line feed available, the

chamcterisusedto~thetwocodes

and is

return and line feed

l2.2Barcfxlegenemtion

Thebarcodesarethe3of9code.This

Because

internally

code. ‘The

there are not codes for the

converted to the carriage

bar code

‘$

page 41

PAR[Is

LIST

Ref No.

Model 2350 Data Qg,ger

UNIT

Climhal

Pmessor Boa&

xl

BOARD

l

Lw*m

c95

C97

c98

cm-Cl00

Cl01

C102-Cl03
Cl04

Cl09
Cl10
Cl11

Cl29
Cl72

Dew$tion

Completely Assembled Model

Part No.

48-2058

2350 Data Logger

Dmwing

Assembled Central

o.O47jLF, lOOV,
O.OOlpF, lOOV,
47pF, lOOV,
O.Ol@$ lOOV,
O.lpF, lOOV,
27pF, lWV,
22pF, lOOV,
27pF, lOOV,

lOj.lF,
loo@?, lOV, D-r
lp.F, 35V,

O.l@

10/Z, 2OV,

371

C

c

c
C
C
C

2ov, DT

DT

5v

DT

Procesmr

c

C

5371-001

04-5565
04-5519

04-5533

04-5523

04-5521

04-5614

04-5552
04-5614
04-5592

04-5576

04-5575

04-5633

044592

.

lRANsJsm

4153
4154
Ql55
4168

4174

2N3904
MI%6534
2N3904
2N7000
2N7ooo

l lNTlERAm-

U118

u119
u120

u121

KM7556
MM58274CN
DS1211
CD74HC573

,

\

’

05-5755

05-5763

05-5755

05-5820
05-5820

06-6244

06-6254

06-6255

06-6093

.

page 42

u122

U123
U124
U125
U126
U128

27C5

12
CDM6264

8OC5lFA

LM331

TLc27M7

RDD104

06-6264
06-6098
06-6236
06-6156

06-6248

CR1 12

CR1

130CR115

CR162

R130
R131
R132
R133
R134
R135

R137-R139
R140
R141-R142

R143
R144
R148
R149

R160

R161

R164
R166-R167

R170
R176

lN523 1
lN4148
lN4148

1OkTRIMMER
lOOkTRIMMER

2.2k

470k
220k

5.6k
1Ok
lOk,

1%

look,

1%

7.15k, 1/8W,
1MEG

35.7k, l/SW,

8&k,

220k

150k

1MFG ­lOk,

1%

1MEG

220k

1%
1%

l/SW,

1%

07-6261

07-6272
07-6272

0943322

09-6823

lo-7012
lo-7026
lo-7066
lo-7042
lo-7016
12-7540
12-7557
12-7620
lo-7028

12-7640
12-7623
m-7066
10-7024
10-7028
12-7540
10-7028
lo-7066

RN151

T157

Y158
Y159

22k SIP

M2221,300-9

MICRG32.768 KHZ

6.144 MHZ

1,OP

,

page 43

12-7566

4275-074

01-5219

01-5212

J15

RIBBON-POST STRIP 40P

13-8007

BOARD

Cl-C3

c4
c5

a-cs
c9

Cl0
Cl1

Cl2
Cl3
Cl4

Cl5
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c23

c24
c!25
c26

z

a9

c30

C31
C32
c33
c34

C35-C36
C37-C38

c39

Assembled Amp/P.S. Board

O.O056j.& 3kV,
O.l/AF, lOOV,

O.OOlS~, 3kV,
O.O056j~F, 3V, C

lOOpF, 3kV,

lo@, 2OV,

47pF, lOOV,

lOOpF, lOOV,
O.Ol@, lOOV,
47pF, lOOV,

lOO@, lOV,

lOpF, lOOV,
47pF, lOOV,

0.0056@, 3kV,
33pF, lOOV,
O.Ol)LF, lOOV,
O.l/AF, lOOV,

0.0056@, 3kV,
22&F, lsv,
220@, lOV,

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lOO@, lOV,

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5371-002

04-5522
04-5521

04-5518
04-5522
04-5532

045592
04-5533

04-5527

04-5523

04-5533
04-5576

04-5573

04-5533
04-5522

i

04-5616

04-5523

04-5521

04-5522

04-5579
04-5639
04-5522
M-5532
04-5523

04-5576
04-5527
04-5518

04-5616

04-5575
04-5519

04-5518

04-5592

04-5519

04-5616

04-5523

page 44

Ql

$
44

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MPS6534

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05-5755

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05-5765
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05-5755

CM-CR2
cR3-cR.5

CR6
CR7

CR8-CRlO

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l-CR12

CR13

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LT1078CN8

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LM385Z2.5

lN4148

MR250-2 07-6266

lN5226
lN5819
lN4148
lN5819
lN4148

MR250-2 07-6266

lhJ4148

06-6252

M251

06-6023
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06-6251
06-6253

06-6223

06-6251
05-5791

07-6272
07-6260

07-6306

07-6272

07-6306
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page 45

5%

5%
5%

5%

5%

5%

12-7748
12-7756
12-7789

12-7686
12-7757

12-7747
12-7748

12-7750

12-7757

12-7748

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R16

R17-R19

R21

R22
R23
R24
R25
R26

R27

R28
R29

R30

R31
R32

R33-R36

R37
R38

R39-R40

R41
R42
R43

R44

R45
R46
R47
R48
R49

R50
R51

R52
R53
R54
R55
R56
R57
R58
R59

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4.R mw,
lOk, 1/3W,S%

0.1

80*6k, 1/3w,

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1 MEG, 1/3w, 1%

33.2k, 1/3W,

4% 1/3w,

100

221k, 1/3w,

lOk, 1/3w,

820 OHM,

lOk, 1/3w,
1MEG
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3k, 1/3w,
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lOk, 1/3w,
lk, 1/3w,

1 MEG, 1/3w, 1%

80.6k, 1/3W,

1 MEG, 1/3w, 5%

lOk, 1/3w,

5%

5%

ohm,

3w, 1%

1%

1/3W,

MEG, 1/3w,

5%

1%

5%

1%

5%

om 1/3w,

1%

5%

1/3W,

1%

5%

5%

5%
5%

5%

1%

5%

5%

5%

5%

1%

5%,

1%

5%

5%

1%

\

12-7750

12-7755
12-7748
12-7647
12-7762
12-7763
12-7749
12-7748
12-7762
12-7790
12-7763
12-7793
12-7758
12-7746
12-7792
12-7748

12-7791
12-7764
lo-7028
12-7747
12-7768
12-7757
12-7686
12-7747

12-7748

12-7793
12-7763
12-7787

09-6831

12-7788

09-6828

12-7754

12-7748

12-7750

12-7763

12-7762

12-7751

12-7748

RN1
RN20

220k SIP 6P 12-7685
220k SIP

1OP

page 46

12-7578

Tl
12

MI222 1;2300;4
M2350 LVPS

HVPS

4275-037

4275-089

l

DIODE4

CLOVERLEAF RECEP­TACLES-01 l-6809-000

SPACXR-423-175

JACK SCREW 3/16 4750-l

BOARD

Assembled Backplane Board

lN4148

CR7 lN5819

lk

18-8771
18-8992

18-9019

5371-003

07-6272
076306

lo-7009

51-52

P3

P4

CONN-3ZA22DRSN

CONN-l-102866-0

CONN-640456-5 MTAlOO

P5 CONN-1-640456-O MTAlOO
P6

CONN-640456-2 MTAlOO
PlO CONN-640456-8 MTAlOO
Pll

CONN-640456-6 MT’AlOO

YOIIIt&ceBoard,~371x5

BOARD

I/OIIGfiUXBoard

27pF, lOOV,
o.o47pF, looV,

loopF, looV,
lo@?, 2ov,

C

c

c

DT

13-8181
13-8368
13-8057

13-8066

13-8073
13-8039
13-8095

5371-005

M-5614
04-5565

04-5576
04-5592

page 47

.

l.IbiNsIsm

Cl2

4.7pF, lOV,

DT

04-5578

423

l

INTIm3AlEDmcIJrIs

u13
u14
u15

l DIODE3

cR26-CR28

.

mIsmRs

R16

R19

R20-R21
R30

l

I3ImcmRw

2N3904

MAX232EPE

87C257-200V10

P8OC51FA

lN523 1

33 OHM

8.2k

3.3k

10 OHM

05-5755

06-6188
06-6278

06-6236

07-6261

lo-7001
m-7015
m-7013
lo-7046

RN33‘

.

TIRANs-

Tl

l CRYSTW

Y25

0-s

P6

P7

P8
P9

1Ok

SIP 6P

M235oEL

12-7777

4275-090

’

6.144

MHZ

CONN-640457-2

MTAlOO 13-8147

coNw64o457-o

01-5212

13-8168

CONN-DD15F3S6OOX 13-8198

CONN-64@457-4*

Ibf’IAlOO

13-8089

,

page48

Wdng

l AUDIO

Diagraq, Drawing

371 x 4

DSl

l -

53
54

J5

56
57
J9
JlO

Jll

312
513
514

Sl 71OLSyZQE

s2
*

s3 30-l-PB GRAYHILJL

s4

UNIMORPH 60690

RIBBON-OSO-020-455
C0NN-64044~5

WA100

2OP

CONN-l-640442-0 MTAlOO

coNNd40440-2

CONN-l-640442-0 MTAlOO

CONN-6404424 bITAl
CONN-640442-8
CONN-640442-6

MTAlOO

MTAlOO

RECPT-UG706iU “C”

CONN-AUDIO

61HA5F

RIBBON-050-020-455 20P

MRS

l-10

KNOB 50-lWD-1G

TOGGLE MTA 206 PA

21-9251

13-8025
13-8041

13-8136
13-8202
13-8136
13-8170

13-8184
13-8171
13-775 1
13-8385
13-8025

08-6511
08-6513

08-6612

08-6517

08-6657

Bl-B4

l IL3YImmm

Rl
R2

*
*
*
*

,

BATIERY-DURACELL

1OOk

NON-LOCKING

-“D”

KNOB-SO-1-1G

lk

t

I&350 HANDLE
M2350 CAN

ASSY.

M2221 BATTERY HARNESS

M2350 MAIN

HARNESS
M2350 RIBBON HARNESS
M2350 FRONT PANEL

page 49

21-9313

09-6756

08-6605

lo-7009

7371-011

4371-029

8261-089
8371-019
8371-020

9371-012

page 50

DRAWINGS AND DIAGRAMS

1

CentralI’rocewBoard,DrawingNo.371xl

Central Processor Board Component Layout, Drawing No. 371 x 27
Amplifier/Power Supply Ebard, Drawing No. 371 x 2

Amplifier/Powzr Supply Board Component Layout, Drawing No. 371 x 24

-Ekkplane

Backplane Board Component Layout, Drawing 371 x 29

I/O Interface Board, Drawing No. 371 x
I/O

Intim

Wiring Diagram, Drawing No. 371 x 4

Bo&,

Drawing No. 371 x 3

5

Ebard Component Layout, Drawing No. 371 x 30

nm“

CPI‘E

‘w,*

l-J

/h

r

nra

CR1 14

.

I

VYIO-

I I

e

--

Ilc.

“-a

”

Pa-4

n-r
n

“3
“-4
n
“-#

-3

-1

-a