Chauvin Arnoux C.A 43 User manual

■■
■■
■MESUREURDECHAMP
LARGEBANDE
■■
■■
■WIDEBANDELECTRIC
FIELDMETER
■■
■■
■BREITBANDIGER
FELDSTƒRKENMESSER
C.A 43
FIELDMETER
Moded'Emploi
User'sManual
Bedienungsanleitung
FRANCAIS
ENGLISH
DEUTSCH

48
SAFETY PRECAUTIONS
■Medical standards consider that electric fields greater than 60V/m can be dangerous to
persons. The user must therefore avoid remaining in close proximity to the instrument
when in an environment of this kind.
■Before making a measurement, as soon as the instrument is switched on, check that the
low battery symbol (35) is not shown on the display. If it is, change the battery.
■In the case of prolonged storage, it is preferable to remove the battery from the instrument.
■When the probe is fitted to the meter, avoid shaking the assembly, particularly in mea-
surement mode.
■In order to keep the instrument in its accuracy class and to obtain optimum use, we advise
against leaving the C.A 43 permanently exposed to fields higher than 300 V/m or 100 A/m.
TO ORDER
Reference
C.A 43 FIELDMETER ......................................................................................................................................... 1670.02
Meter + EF2 isotropic probe supplied in a carrying case.
Supplied with the instrument :
- 1 optical strap (plastic fibre 10m)
- 1 opto-electric adaptor DB 25M.
- 1 mode changer DB 25F/DB 25F
- 1 reducer DB 25F/DB 9F
- 1 EMIGRAPH software program
- 1 set of 5 adhesive labels, simplified Userís manuals (5 languages),
to stick to the back of the instrument
- 1 battery 9 V
- 1 User manual for the C.A 43 Fieldmeter.
Accessories :
- Shockproof case n∞10 ..................................................................................................................................... 2980.09
- EF1 probe (with vertical polarisation) .................................................................................................. 1672.01
Spare parts :
- EF2 probe (isotropic) ....................................................................................................................................... 1672.02
- EMIGRAPH software ....................................................................................................................................... 1672.05
- Optical strap (10m) ............................................................................................................................................ 1672.03
- Opto-electrical adaptor ................................................................................................................................... 1672.04
(with mode changer and reducer)

49
CONTENTS
DESCRIPTION 47
- Case 47
- Display 48
PRESENTATION 50
- General 50
- User manual labels 51
USE 51
SPECIAL FUNCTIONS 52
- Switching On permanent 52
- Switching Off the sound beep 52
- Displaying the present time 53
- Printing the program memory 53
- Erasing the program memory 55
- Erasing the measurement memory 55
- Access to several special functions 55
MEASUREMENT MODE 56
- digital display 56
- measurements 56
- value measurements 56
- , average recording 57
- On/Off 59
MEMORY MODE 61
- Manual memory 61
- Automatic memory 61
- Reading measurement memory 62
PRINT MODE 65
- Manual printout 65
- Automatic printout 66
PROGRAM MODE 66
- Alarms/∆t session/clock ¡/ rate 66
- Writing a number 67
- Special cases in µW/cm≤68
- Rereading programs 68
USING PROBES 68
- How to use 69
- EF2 probe 70
- EF1 probe 70
HOLD
SMOOTH
PEAK
MIN MAX
ALARM
SCAN

50
DIGITAL OUTPUT 71
REMOTE READ 72
- Reading the measurement 73
- Reading the state of the instrument 73
- Reading the measurement memory 74
- Reading the program memory 75
- Fast reading of the memory 75
- Example of rapid read 76
SOUND DEMODULATION 78
SPECIFICATIONS 79
- Electrical specifications 79
- Mechanical specifications 81
MAINTENANCE 82
- Changing the battery 82
- Cleaning 82
- Maintenance 82
WARRANTY 83
APPENDIX 83
(cont.)

51
CASE
1 - Sound demodulation control
2 - Optical connector, digital link
3 - 4 position rotary switch
4 - button
- Programming
- Initialisation of the program memory
5 - button
- Memorisation of the measurement
- Display of the memory address
- Display of the remaining memory capacity
- Initialisation of the measurement memory
- button
- Programming the sessions of ∆t memorisation
- Setting the clock ¥
6 - button
- Smoothing measurements
- Switching On/Off the display of the present time
- button
- Increase
7 - button
- Recording MIN, MAX and AVG
- Display of MIN, MAX and AVG
- Switching On or Off the sound beep
- button
- Moving the programming digit to the left
8 - Measurement probe connector
9 - button
- Hold digital display
- Cancel auto Off P
- button
- Move programming digit to the right
10 - button
- Peak values, cancel 50Hz filter
- button
- Decrease
DESCRIPTION
PRGM
MEM
¥
SMOOTH
▼
▼
MIN MAX
HOLD
▼
PEAK
▼

52
11 - button
- On/Off alarm detection
- Selection of low and high alarms on programming
- Display of the alarms on re-reading measurement memory
12 - button
- Printout
- button
- Programming print rate.
DISPLAY
13 - Programming mode in operation
14 - Printout request mode
15 - Clock
16 - Cancel automatic memorisation
17 - Rate of automatic memorisation
18 - Digital output or input in progress
19 - Digital display of battery capacity, clock, ∆t or scan duration
20 - Log scale
21 - Analogue display by 35 segment bargraph
22 - Arrow indicating end of scale
23 - Measurement unit in microWatts per cm≤
24 - Measurement unit in Volts per metre
25 - Measurement unit in Amps per metre
26 - 2000 count digital display
27 - Digital measurement in smoothed value
28 - Digital measurement in peak value
29 - Recording temporarily stopped
ALARM
PRINT
SCAN

53
30 - Re-read measurement memory mode
31 - Memorisation of measurements
32 - Recording MIN, MAX and AVG in operation
33 - Instrument in permanent operation
34 - Digital readout of the average value
35 - Low battery indicator
36 - Digital readout of the minimum value
37 - "Beep" On
38 - Digital readout of the maximum value
39 - Hold the digital display
40 - High alarm threshold crossed
41 - High alarm function in operation
42 - Low alarm threshold crossed
43 - Low alarm function in operation

54
PRESENTATION
GENERAL
Pollution of the radio-electric environment is becoming more and more harsh, which leads to
problems of malfunctioning in many types of electronic equipment, especially since the use
of sequential logic and the development of microprocessors.
These modern techniques are used in practically all types of industrial equipment which makes
them particularly sensitive to interference and electromagnetic disturbances. The C.A 43
FIELDMETER allows the user to measure these levels of disturbance.
Measurements are of two types :
- Measurement of immunity
This measurement gives the value of the electromagnetic field in which equip-
ment is located, in order to check that this field does not exceed the permitted limits
in accordance with applicable standards.
- Measurement of emissivity
This measurement gives the value of the electromagnetic field emitted by
equipment which is switched ON, and consequently its class of electromagnetic
compatibility in accordance with the applicable standard.
The C.A 43 is a small portable instrument that measures the electric field present in the
atmosphere surrounding its measurement probe.
This probe consists of an aerial combined with a high frequency detector. The wide passband
of this unit enables the measurement of electrical fields from 0.1 V/m to 200 V/m for
frequencies between 100 kHz and 2.5 GHz.
The connection between the measurement probe and the base instrument is made via a
socket which allows the measurement probe to be removed during transportation.
The use of microprocessors for measurement, calculations and management of the display
makes the instrument simple to use and very accurate.
The large LCD comprises a 2000 count digital display, a logarithmic 35-segment bargraph and
a display of the different measurement symbols that provide easy reading for the user.
The bi-directional digital output via optical fibre permits access to all data for printing and
processing of measurements on an external processing unit. To allow you to do this, the
EMIGRAPH software program is supplied as standard with the C.A 43 Fieldmeter.

55
USE
Your Fieldmeter consists of a case and a probe. To connect it, simply position it in the axis
of the case, turn the probe and push it in. Lock in position by pulling the black ring on the probe
towards the case (multi-contact push-pull socket).
Never try to turn the probe when it is fitted to the case, you may cause damage
to the sensor and its connections.
To switch On the instrument, position the rotary switch to one of the On positions corres-
ponding to the type of measurement to make. The display makes a general self-test, then
shows (top right) the remaining service life as a % (150% maximum for a new battery), finally,
the result of the measurement is displayed with the appropriate symbol (measurement unit,
function...). Choose a special function if necessary by pressing the corresponding button
when switching On (See SPECIAL FUNCTIONS).
The measurement of the field is done by moving the aerial in the environment to be measured.
You obtain a direct wide band measurement of the field that the measurement sensor is
subjected to. To find the value of the field emitted by a source of interference, simply point the
aerial towards it and get as close as possible (the value of the field is inversely proportional
to the distance of the sensor/emission source).
To switch Off the instrument, set the switch to Off (the display goes blank). Auto Off may be
triggered if you have not turned the switch or pressed the buttons during 10 minutes of
operation. In this case, if you want to wake up your Fieldmeter, simply press any button or turn
the switch (except to the OFF position). The display comes On again and the instrument starts
taking measurements again without taking into account the button pressed to wake it up.
After your measurements, position the switch to OFF and preferably put your Fieldmeter away
in its case. To do this, remove the probe by undoing the locking ring (in the axis, push the ring
of the case towards the probe) then carefully separate the two parts and put them away.
USER MANUAL LABELS
Five adhesive labels are supplied with your Fieldmeter. They are simplified reminders about
how to use your instrument. This information is available in five languages. Choose your label
and carefully stick it to the back of your instrument. Now you will always have the information
necessary to use your Fieldmeter.

56
SWITCHING ON PERMANENTLY
After 10 minutes of operation without pressing a button or turning the rotary switch or reading
the digital output, a battery economy system puts the instrument to sleep. This auto Off is
preceded by a beep and flashing of the digital display for one minute.
If you operate the instrument whilst it is flashing, the instrument will continue its active
operation for a further period of 10 minutes in the selected functions and without taking into
account the button pressed to wake it up. If you turn the switch the instrument will continue
to operate for a further 10 minutes.
To avoid your Fieldmeter setting to sleep mode every 10 minutes, you can cancel the Auto
Off function. To do this, press simultaneously when switching On with the
rotary switch. The Psymbol is displayed indicating that the Fieldmeter is in permanent
operation. This cancellation of the Auto Off function is cancelled when the instrument is next
switched Off (switch to the OFF position).
Note :
Auto Off is automatically cancelled on RECORD mode and in certain cases, on the SCAN
function.
DEACTIVATING THE "BEEP"
A buzzer, which is a piezo-electric chip, is used to indicate that the buttons are being pressed
and different functions used. The table below defines the frequencies and the lengths of the
beeps in all the functions of the instrument.
SPECIAL FUNCTIONS
FUNCTIONS
Press button X
Press button > 2s X
Buttoninoperative X
MIN recording X
MAXrecording X
Low alarm X
High alarm X
Alarms crossed X
Auto Off X
Memory X
4 kHz2 kHz1 kHz1 kHz2 kHz1 kHz4 kHz2 kHz
2 kHz
40 ms Continuous 65 ms 125 ms 250 ms
HOLD