C.A 6121 - Measuring equipment CHAUVIN ARNOUX - Free user manual and instructions

Technical Features	Digital multimeter with LCD display, measurement of AC/DC voltage, AC/DC current, resistance, continuity, diode.
Voltage Measurement Range	0-600 V AC/DC
Current Measurement Range	0-10 A AC/DC
Resistance Measurement Range	0-20 M9
Additional Features	Frequency measurement, capacitance, diode test, continuity test with audible signal.
Usage	Ideal for professionals and hobbyists in electricity and electronics for precise diagnostics.
Maintenance and Repair	Regularly check the condition of probes and cables, replace batteries when the display becomes weak.
Safety	Follow electrical safety standards, use personal protective equipment during tests.
General Information	2-year warranty, CE compliant, delivered with a user manual.

Frequently Asked Questions - C.A 6121 CHAUVIN ARNOUX

How to calibrate the CHAUVIN ARNOUX C.A 6121?

To calibrate the CHAUVIN ARNOUX C.A 6121, follow the calibration steps provided in the user manual. Make sure to use appropriate reference instruments and regularly check the results.

What to do if the CHAUVIN ARNOUX C.A 6121 screen remains black?

If the screen remains black, first check if the device is properly charged or powered. If the device uses batteries, replace them. If the problem persists, contact customer service.

How to interpret the measurements displayed by the CHAUVIN ARNOUX C.A 6121?

Measurements are displayed in specific units according to the selected mode. Refer to the user manual for a detailed explanation of each mode and associated measurement units.

The CHAUVIN ARNOUX C.A 6121 does not turn on, what to do?

First check the power source. If you use batteries, replace them. If the device is plugged into mains, ensure the outlet works. If the problem persists, contact technical support.

How to change measurement settings on the CHAUVIN ARNOUX C.A 6121?

To change measurement settings, use the navigation buttons to access the settings menu on the display. Select the desired setting and follow the on-screen instructions.

What to do if measurements seem incorrect?

Check if the device is properly calibrated and if the probes are in good condition. Also ensure you are using the device under appropriate conditions. If measurements are still incorrect, contact customer service.

How to store the CHAUVIN ARNOUX C.A 6121?

Store the device in a dry place and protect it from shocks. Avoid extreme temperatures and humidity. Use the provided protective case to prevent damage.

Is the CHAUVIN ARNOUX C.A 6121 waterproof?

The CHAUVIN ARNOUX C.A 6121 is not designed to be waterproof. Avoid any contact with water or liquids to ensure optimal operation.

Where to find the user manual for the CHAUVIN ARNOUX C.A 6121?

The user manual can be downloaded from the official CHAUVIN ARNOUX website in the products or support section.

USER MANUAL C.A 6121 CHAUVIN ARNOUX

Warning : risk of electric shock

This machine has been designed for testing the electrical safety of machines, in conformity with standard EN60204-1, parts 19 -1 to 19-5. Its worksite case is hardwearing, but also easy to carry to your measurement site. Its interface, simple to use, gives you very rapid access to all the main functions of the instrument. Its optional accessories allow it to be adapted to all specific environments. List of measurements that the instrument can perform : ■ Dielectric test with a test voltage of 1000 V AC ■ Dielectric test with a test voltage of 1250 V AC ■ Dielectric test with a test voltage of 1500 V AC ■ Voltage drop scaled to 10 A AC with a test voltage of 12 V / > 10 A AC ■ Low resistance with a test voltage of 12 V / >10 A AC ■ Insulation resistance with a test voltage of 500 V DC ■ Insulation resistance with a test voltage of 1000 V DC ■ Two pole discharge time (residual voltage) ■ Four pole discharge time (residual voltage)

Fig.1. Presentation of the front panel29 1 REMOTE connector to connect a REMOTE CONTROL PEDAL 2 WARNING LAMP connector to connect external WARNING LAMPS (standard VDE 104) 3 RS 232 connector to connect external printer or PC 4 DISCHARGE TIME - TEST terminals to be used in four pole measurement 5 DISCHARGE TIME - MAINS TEST terminals to be used in 2 or 4 pole measurement 6 LCD dot matrix display with continuous back light 7 GENERAL KEYS (see the function of each key on the LCD) 8 MAINS CONNECTOR (mains power supply of the instrument) 9 POWER ON indicator light 10 POWER ON / OFF key 11 TEST ON warning light 12 START/STOP push button 13 SET UP key to set: - contrast of the display - real time clock and date - buzzer (on/off) - baud rate 14 ROTARY SWITCH to select the functions 15 PRINT/RS key to: - transmit memorised data to a PC - print memorized data to external printer 16 MEM/MR key to: - memorize results - recall memorized results - erade memorized results 17 DIELECTRIC test terminals 18 CONTINUITY test terminals (current terminals C1, C2 and potential test terminals P1, P2) 19 Grounded INSULATION test terminal 20 Positive INSULATION test terminal

0 - 2.00 10 ±(2% of the reading + 20 V)

■ Tripping test current (nominal test voltage 1000V) : adjustable to 1, 3, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500 mA ■ Tripping test current (nominal test voltage 1250V) : adjustable to 1, 3, 5, 10, 20, 30, 40, 50,60, 70, 80, 90, 100, 150, 200, 250, 300, 350, 400 mA ■ Tripping test current (nominal test voltage 1500V) : adjustable to 1, 3, 5, 10, 20, 30, 40, 50, 60,.70, 80, 90, 100, 150, 200, 250, 300, 333 mA ■ Test current readout (sine) : Range (mA) Resolution (mA) Accuracy

0 - 199.9 0.1 ± (2% of the reading + 0.3 mA)

Tripping current set to 1, 3, 5, 10 or 20 mA ± (2% of the reading + 0.5 mA)

200 - 500 1 Tripping current set to 30, 40, 50, 60, 70, 80, 90 or 100 mA

±(2% of the reading + 2 mA) Tripping current set to 150, 200, 250, 300, 330, 350, 400, 450 or 500 mA ■ Character of the displayed test current: adjustable ( ), capacitive ( ) or absolute value ( I I I A R C

0 - 9.99 0.01 ±(5% of the reading + 2 pt.)

10.0 - 25.0 0.1 ±3% of the reading

■ Max permitted voltage drop depending on the cross section of the cable : Cross section of the cable (mm

) Max voltage drop (V)

1.00 - 1.99 Ω 10 ± 5% of the reading

0 - 9.99 0.01 ±(5% of the reading + 2 pt.)

10.0 - 25.0 0.1 ±(2% of the reading)31

i = i + i A C Ri .....capacitive current i .....resistive current

Fig. 3. Test current diagram How to perform the measurement ?

1. Set the rotary switch to the HV (high voltage) position; the following screen is displayed :

1000V 1mA Function name Nominal test voltage Tripping out current Test voltage Set timer value Timer key to set timer value or to switch it on/off I key to select tripping out current or to select character of displayed leakage current Leakage current (main result) Un key to select nominal test voltage Fig.4. Basic screen in HV position

2. Select the test parameters as follows :

■ Character of the displayed test current (fig. 5) - Press I key and keep it pressed (approx. 2 s) until the menu for selection of current character is displayed. - Press

ñ to select resistive part (the symbol is displayed above the mA unit), capacitive part (the symbol is displayed above the mA unit), or absolute value (nothing is displayed above the mA unit). - Press EXIT key to exit this menu ■ Tripping out current (fig. 6) - Press I key to open the tripping out current selection menu. - Press the

ò keys to choose the tripping current. - Press EXIT key to exit this menu ■ Test voltage - Press the U

key to choose the test voltage between 1 kV, 1.25 kV or 1.5 kV. ■ Timer ON/ OFF - Press the TIMER key to validate the timer (the chosen test time is displayed) or not validate the timer (the test time is not displayed). ■ Duration of the test (fig. 7) - Press the TIMER key and keep it pressed (approx. 2 s) until the menu for selection of the timer value is displayed. - Press the

ò keys to select the duration of the test. - Press EXIT key to exit this menu NOTES : The value of the test current threshold that has been defined is always compared to the absolute value of the test current, whatever the chosen character displayed: resistive (real) or capacitive (imaginary). 1mn 00s _ _ _ _ mA Exit Set Character U:_ _ _ _ kV

1000V 1mA Fig.5. Menu for selection of test current character 1mn 00s _ _ _ _ mA Exit Set Imax U:_ _ _ _ kV

1000V 1mA Fig.6. Menu for selection of tripping out current 1mn 00s _ _ _ _ mA Exit Set Timer U:_ _ _ _ kV

3. Connect the test probes (guns) to the instrument as shown in the figure 8.

4. Press the START/STOP key to start the high voltage

generator and perform the test using test probes.

5. Press the START/STOP key to stop the high voltage

generator or wait for set time to elapse, if the timer has been used. NOTES :

■ Use the Timer ON mode or optional REMOTE CONTROL pedal to stop the measurement when the test probes are still connected to the tested instrument. The results displayed that are obtained in this way can be saved in the memory for documentation purposes.

■ It is advisable to connect the test probes before starting the test using the REMOTE CONTROL pedal, to avoid sparks and thus unwished tripping out of HV generator.

■ For greater safety standard VDE 104 recommends the use of optional WARNING LAMPS, connected to the instrument, in particular when the measurements have to made at a distance from the instrument using the optional test probes, equipped with longer cables (6 m).

■ When the test current is greater than the pre-set limit, the HT generator trips automatically when this value is exceeded, and the pre-set limit value is displayed as the result. 6. Save the displayed result for documentation purposes (refer to the instructions in chapter 5.2. to find out the procedure for saving the displayed result). 4.2. VOLTAGE DROP SCALED TO 10 A AC (POSITION

1. Set the rotary switch to the

∆U position (voltage drop); the following screen is displayed : 10s _ _ _ _ V Timer∆Umax I:_ _ _ _ A U:_ _ _ _ V

■ Voltage drop threshold - Press the ∆U max key to select the threshold, refer to the table in

■ Duration of the test - Refer to the instructions allowing definition of the duration in

3. Connect the test leads to the instrument and to the tested

instrument in accordance with the figure 11.

4. Press the START/STOP key to start the measurement.

5. Wait for the set time to elapse (if the timer has been switched on)

or press the START/STOP key again to stop the measurement.

6. Save the displayed result for documentation purposes (refert to

the instructions in chapter 5.2 to save the displayed result). 4.3. LOW RESISTANCE (POSITION R10A) Refer to the test circuits, fig.9. How to perform the measurement ?

1. Set the rotary switch to the R 10A position (low resistance); the following screen is displayed.

■ Resistance threshold - Press the R max key to access the selection menu for the resistance threshold. 10sSet Rmax _ _ _ _ mΩ Exit U:_ _ _ _ V I:_ _ _ _ A R-10A 100mΩ Fig.13. Low resistance threshold selection menu - Press the

ò keys to select the threshold*.

• A buzzer will ring if this threshold is exceeded. If the value

mW is chosen as limit, the result will not be compared to any threshold and no buzzer will ring. - Press EXIT key to exit this menu

■ Duration of the test - Refer to the instructions allowing definition of the duration in chapter 4.1.

3. Connect the test leads to the instrument and to the tested instrument in

accordance with figure 14.

4. Press the START/STOP key to start the measurement.

5. Wait for the set time to elapse (if the timer has been switched on) or press

the START/STOP key again to stop the measurement.

500/1000VDC Fig.15. Test circuits How to perform the measurement ?

1. Set the rotary switch to M

Ω position(insulation resistance); the following screen is displayed. 10mn _ _ _ _ MΩ TimerRminUn 1000V 1MΩ

Function nameNominal test voltage Threshold insulation resistanceSet timer valueTimer key to set timervalue or to switch it on/offRmin key to setthreshold insulation resistanceInsulationresistanceUn key to setnominal test voltage Fig.16. Basic screen in M

■ Insulation resistance threshold - Press the R min key to access the menu for insulation resistance threshold selection. - Press the

ò keys to select the threshold*.

• A buzzer will ring if this threshold is exceeded. If the value

is chosen as limit, the result will not be compared to any threshold and no buzzer will ring. - Press EXIT key to exit this menu

key to select the test voltage: 500 V DC or 1000 V DC

■ Duration of the test - Refer to the instructions allowing definition of the duration in chapter 4.1. 10mn _ _ _ _ MΩ Exit 1000V 1MΩ

Fig.17. Insulation resistance threshold selection menu

3. Connect the test leads to the instrument and to the tested instrument

in accordance with the figure 18.

4. Press the START/STOP key to start the measurement.

5. Wait for the set time to elapse (if the timer has been switched on)

or press the START/STOP key again to stop the measurement.

■ The actual test voltage is displayed during the measurement and also after finishing the measurement until the voltage drops to 60 V.

■ Do not disconnect the leads until the voltage present drops down to 60 V and do not touch the test terminals during that time.

expectedMAINS TESTinput voltage disconnection voltage ideal power disconnectionmoment power disconnection moment Fig.20. Voltage on MAINS TEST input How to perform the measurement ?

1. Set the rotary switch to ∆t (discharge time) position; the following screen is displayed.

U:_ _ _ _ V _ _ _ _ S Syst. 2-point

Function name Selected connection system Present voltage during the test or disconnection voltage after finishing the test Discharge time (main result) Syst. key to select connection system Fig.21. Basic screen in ∆t position

2. Select 2-pole system by pressing the SYST. key (2-point 1s is displayed)

3. Connect the test cable to the instrument and to the tested unit in accordance with figure 22 ; le

symbol is displayed above unit S, informing the user that the mains voltage is connected to the MAINS TEST input.

4. Press the START/STOP key to prepare the instrument for the mains

voltage cut-out; Ready is displayed after 1s approx.

5. Pull out the double connection element and wait for the result to be

■ The red TEST ON lamp is on during the measurement (until pulling out the double connection element and until the TEST voltage has dropped to 60 V).

■ The actual voltage is displayed during the measurement, and the disconnection voltage (see fig.20) is displayed when the measurement is finished.

■ ∆t < 0.1 s is displayed under the main result and no voltage is displayed on the right of the display, if the discharge time is less than 0.1 s.

detection of mains disconnection rest voltage test

possible TEST input voltage disconnectionvoltage power disconnection moment Fig.24. Expected voltage on MAIN TEST input Fig.25. Expected voltage on TEST input Fig.22. Connection of the test leads

1. Set the rotary switch to

∆t (discharge time) position; the screen in fig.21 is displayed.

2. Select 4-pole system by pressing the SYST. key (4-point 5s is

3. Connect the test cables to the instrument and to the tested unit in

accordance with figure 26; le symbol is displayed above unit S, informing the user that the mains voltage is connected to the MAINS TEST input.

4. Press the START/STOP key to prepare the instrument for the mains

voltage cut-out; Ready is displayed after 1s approx.

5. Pull out the double connection element and wait for the result to be

■ The red TEST ON lamp is on during the measurement (until pulling out the double connection element and until the TEST voltage has dropped to 60 V).

■ The actual voltage is displayed during the measurement, and the disconnection voltage (see fig.20) is displayed when the measurement is finished.

■ ∆t < 0.1 s is displayed under the main result and no voltage is displayed on the right of the display, if the discharge time is less than 0.1 s.

5.1. WARNINGS Different warnings in addition to information can be displayed during operation of the C.A 6121 MACHINE TESTER. See below a list of warnings and information for each function.

■ HV function : Trip out : The HV generator tripped because the test current was higher than the set threshold value.

∆U function : ∆U > ∆U max : The displayed result (∆U) is higher than the set threshold value. U > 12 V : The AC voltage connected to the input P1-P2 is higher than 12 V.

■ R10A function : R > R max : The displayed result (R) is higher than the set threshold value. U > 12 V : The AC voltage connected to the input P1-P2 is higher than 12 V.

Ω function : R < R min : The displayed result (R ins ) is lower than the set threshold value. U > 30 V : The AC or DC voltage connected to the MW terminals is higher than 30 V.

∆t function : Voltage? :There is no voltage conected to MAINS TEST terminals. ∆t < 0.1 s :The voltage at the terminals of the MAINS TEST inputs dropped below 60 V in less than 0.1s. ∆t > tmax :The displayed result (∆t) is higher than the set threshold value (chosen at the same time as the connection system; 2 pole or 4 pole).

■ All functions : HOT : The instrument is overheated (in functions ∆U, R10A or HV) ⇒ wait. Measurements in functions MΩ or ∆t can still be carried out. NO RESULT : There is no result on the display or the displayed result has already been saved. NOTHING TO PRINT : There was no result saved/displayed before entering the PRINT menu. Fig.26. Connection of the test leads

Any displayed result can be saved in one of 999 memory locations. The associated results as well as the test parameters are saved at the same time as the main results and can be recalled or printed out later. Each result is allocated a memory number (No.) and a machine number (MACH) e.g.: No:025 MACH:003 The machine number can be set between 001 and 255 and the memory numbers corresponding to each machine, between 001 and 999, until the total memory capacity is full. Fig.27. Presentation of memory organisation How to save the displayed results ? Key used : Opens the menu of Memory options : Opens the menu for selection of the memory number and the machine number :

Enter the memory and machine numbers and validate/save by pressing the MEM

⇒ . The result is saved and the main menu is displayed again. Press before validating/ saving (MEM) allows the user to exit without memorising the result. NOTES :

■ A displayed result can only be saved once (in order to avoid the risk of storing twice).

■ Memory save locations already occupied can be erased by saving a new result at this location. The occupied locations are marked with the letters OC and the free locations with the letters FR, next to the memory number. No:003 OC MACH:162

■ Rapid scrolling of the memory and mchine numbers is done by continuous press on the and keys.

5.3. RECALLING STORED RESULTS

To check a result stored in the memory, the stored result recall function can be used as follows: Key used : Opens the menu of Memory options : The highest save location corresponding to the last machine number used is displayed, as well as the following menu :

ò key to consult the results saved under the displayed machine number. Then press the MACH

ò key if you want to consult the results corresponding to other machines. A long press allows you to scroll through the memory and machine numbers.

EXIT The main menu is displayed again.

• 41 5.4. RS232 COMMUNICATION (FOR PRINTOUT AND CONNECTION TO A PC) To print saved data or transfer them to a PC, you must use the RS232 communication function.

ARNOUXCHAUVINRS232 communication cable (PC)25-9 pin adapter Fig.30. Connection of C.A 6121 MACHINE TESTER to PC (to 25 pin or 9 pin connector)

■ How to transfer stored data to serial printer or PC ? 1. Connect the C.A 6121 MACHINE TESTER to the serial printer or to the PC (see figures 28 to 30) using the appropriate RS232 communication cable and adapters.

2. Prepare the printer or the PC for communication.

3. Prepare the C.A 6121 MACHINE TESTER to communicate in the following way:

- Check the baud rate : Press the SET UP key and keep it presses for 2 s approx., until the baud rte selection menu is displayed. Press the BAUD key, then the

ò keys to set the rate = 300, 600, 1200, 2400 or 4800 bauds (equal to that of the printer or the PC). - Press the PRINT/RS key to open the print menu and select one of the modes below (fig. 32). Print measure : Only the last result displayed will be printed when you press the START key. Print selection : Only the results saved under the machine numbers 001→ 007 (in our example) will be printed when you press the START key. Press the CHG key then the

ò keys to modify the machine numbers. Print all : All the results will be printed when you press the START key. Print automatic : When you select this mode, each result displayed is printed automatically at the end of a measurement. RS 232 : The instrument is in communication mode and is waiting for instructions from the PC.

4. Select the print mode by pressing the

ò key and follow the instructions below : Print measure : Press the START key, the last result displayed before opening the print menu is printed out, then the main menu is displayed. Print measure Print selection Print automatic Print all RS232 START Print measure Print selection Print automatic Print all RS232 Print measure Print selection Print automatic Print all RS232 START Print measure Print selection Print automatic Print all RS232 MACH:001 MACH:007 START CHG Fig. 32. Printout modes Print measure Print selection Print automatic Print all RS23243 Print selection : Key used : Machine number on the left starts flashing.

Select start machine number. Machine number on the right starts flashing.

To erase all or part of the saved results, the CLR function must be used. There are two erase modes:

■ Erase all the save locations

■ Erase the results saved under a particular machine number

■ How to erase a part of the results saved ? Enter memory operation mode. Two modes are offered : CLEAR ALL and CLEAR MACH. Select CLEAR ALL mode. Confirm erase by pressing the CLR key; the ∗ symbol is displayed during erasure, then the main menu opens. A press on before confirming the erase operation (CLR) allows you to exit without erasing.

■ How to erase a part of the results saved ? Enter memory operation mode. Two modes are offered : CLEAR ALL and CLEAR MACH. Select the CLEAR MACH mode, the machine number to erase is displayed. Press the MACH

ñ key to select the number of your choice. Confirm erase by pressing the CLR key; the ∗ symbol is displayed during erasure, then the main menu opens. A press on before confirming the erase operation (CLR) allows you to exit without erasing.44

1. Switch off the instrument by setting the ON/OFF key to the OFF position.

2. Press the SET UP key and keep it pressed while switching on the instrument.

Machine Tester followed by Hard Reset are displayed for a few moments, then the main menu opens. NOTES : The reinitialised values of the adjustable parameters correspond to the requirements of standard EN 60204.

voltage drop 3.3 V (1.0 mm

min min. allowed 0.2 MΩ...1 MΩ (in steps of 0.1 MΩ) MΩ insulation 1 MΩ...10 MΩ (in steps of 1 MΩ) 1 MΩ resistance 10 MΩ...500 MΩ (in steps of 10 MΩ)

Ω (no limit) t Timer 2 s...1min...10 min (in steps of 1 s and 10 s) 15 s ∆t Syst Measuring 2-point (1 s), 4-point (5 s) 2-point (1 s) system t Timer ON ou OFF ON ON/OFF (M/A) Toutes Baud Baud rate 300, 600, 1200, 2400, 4800 4800 fonctions Buzzer ON/OFF ON Contrast 0%...100% (in steps of 2%) 50%

1. Switch off the instrument by setting the ON/OFF key to the OFF position.

2. Press the SET UP and MEM/MR keys and keep them pressed while switching on the instrument.

Machine Tester then Hard Reset followed by Clear Memory are displayed for a few moments, then the main menu opens. NOTES : The reinitialised values of the adjustable parameters correspond to the previous table, in accordance with standard EN 60204.45 5.7. CONFIGURATION

5.7.1. Display contrast

If the display is not sufficiently readable (screen too dark or lettering intensity too low), the display contrast must be reinitialised. How to set the contrast ?

1. Press the SET UP key to open the following menu :

NOTE : The clock displayed on the screen is working

ò keys to set the contrast (the best readability).

4. Press the EXIT key to exit the contrast set up menu.

NOTE : The set readability may change due to a change in the temperature of the screen (instrument heating or change in ambient temperature).

5.7.2. Time and date

How to set the time and date ?

1. Press the SET UP key, see set up menu, fig.35.

ð keys to set hour, minutes, day, month and year.

4. Press the SET UP key to validate this set up; the clock works and the main menu

is displayed. NOTES :

■ If you do not want to confirm the set time and date, simply turn the rotary switch.

■ The clock displayed in the time set up menu is not running.

5.7.3. Warning buzzer

One of the functions of the warning buzzer is to provide audible information relating to the evaluation of the measurement result (set threshold value exceeded or not). This warning buzzer is on during and at the end of the measurement, only if the warning buzzer is set to the ON position. As the buzzer continues to beep when the result exceeds the set threshold value, it can disturb the user, which is why it is possible to cut off the warning buzzer. When the warning buzzer is cut off, it is only switched off for the result evaluation function, but remains on in all other cases (reaction to the operation of press keys, rotary switch etc...). How to switch the buzzer on or off ?

1. Press the SET UP key, see configuration menu fig.35.

ñ key to set the buzzer to on or off.

How to set the baud rate ?

1. Press the SET UP key and keep it pressed for approx. 2 s until the Baud menu is

ò keys to set the rate to 300, 600, 1200, 2400, or 4800 bauds.

4. Press the EXIT key to return to the main menu.

5.8. SOUND SIGNALS There are 3 different types of sound signals : a) Continuous signal : The displayed result is outside the set limit b) Beep signal : Signals pressing of a key or turning of rotary switch c) Beep-beep signal : End of the timer or of a recording, erasing, printout or transmission to a PC.

5.9. USING THE REMOTE CONTROL PEDAL

The remote control pedal is used to trigger and to stop the measurement (in each function), as well as to save the displayed result with the foot. We recommend using the pedal when both hands are occupied with the test probes, or when tests are being made at a distance from the instrument, by means of longer cables.

front view Fig.41. Connection of the remote control pedal to the C.A 6121 MACHINE TESTER NOTE : When the remote control pedal is connected to the instrument, the START function on the front panel is not operational, whilst the STOP function is operational. How does the remote control pedal work ?

■ The START/STOP function of the pedal is absolutely identical to that of the front panel of the instrument when the pedal is not connected.

■ The SAVE function of the pedal is automatic, which means that you simply press the SAVE pedal once to save the result displayed in the location following the machine number. The machine number must be defined beforehand. Fig.39. Baud rate menu SOFTWARE VERSION MT 1.00 BAUD : 4800 BAUD Fig.40. Baud rate setup menu SOFTWARE VERSION MT 1.00 BAUD : 4800 Exit47

TEST READY Instrument connector (female) type MAB 5100 DIN 41524 (front view) and internal instrument circuitry front view The procedure to follow is as follows :

1. Connect the remote control pedal in accordance with fig 41.

2. Record a first measurement at the desired memory location (memory number and machine number) with the keys on the

keyboard (see § 5.2).

3. Carry out the next test by pressing the START/STOP pedal.

4. Save the results by pressing the SAVE pedal.

The following window (fig. 42) is displayed for a moment (if for example an HT test has been carried out) : Then the main menu is displayed again. Continue the measurements.

■ Technical specifications of the pedal : Cable length : 10 m Commands : START/STOP, SAVE Case : metallic Weight : 2 kg Dimensions (W x H x D) : 300 x 175 x 55 mm 5.10. USE OF WARNING LAMPS (STANDARD VDE 104) The warning lamps are used to warn the user and other persons who may be present on the sites of the tests of the presence of dangerous voltages during dielectric tests.

■ Meaning of the colours : - The red light (TEST) lit means the presence of a dangerous voltage at the terminals of the dielectric test. Please take care during handling of the test probes (guns) ! DANGER PRESENT ! - The green light (READY) lit means that the instrument is powered up and ready for a measurement; there is not a dangerous voltage at the terminals of the dielectric test. POTENTIAL DANGER ! Fig.43. Connection of the warning lamps to the C.A 6121 MACHINE TESTER

■ Technical specifications of the warning lamps: Cable length : 2 m Bulbs : 12-15V / 4W Case : plastic Weight : 0.3 kg Dimensions (W x H x D) : 200 x 110 x 95 mm NOTE : If no lamp lights up when the rotary switch is in the HV position, stop the measurements immediately and check the connection of the warning lamps as well as the bulbs. Fig.42. IMemory and machine number information HV 1000V 500mA

6.1. USUAL CLEANING Use a soft cloth slightly moistened with soapy water to clean the surface of the C.A 6121 MACHIN TESTER and allow the instrument to dry completely after cleaning (2 h). Do not use liquids based on alcohol, oil or hydrocarbons ! Do not pour cleaning liquid on the instrument ! 6.2. REPLACING THE FUSES (FOR PROPERLY QUALIFIED MAINTENANCE PERSONNEL ONLY !) If the instrument has any faulty function of any kind, have the four fuses checked by an approved maintenance technician. Refer to chapter 3.6 to know the function of each fuse. Only use original fuses, like those specified in chapter 3.6.! Unplug all the test cables and power supply leads before opening the instrument. Dangerous voltages may be present in the instrument. Only a qualified maintenance technician cn carry out replacement.

■ Position of each fuse : F1 : MC PCB (power supply card) F2 : SMC PCB (power supply card) F3 : Mains filter PCB F4 : Test terminal filter PCB 6.3METROLOGICAL CHECK Like all measuring or testing devices, the instrument must be checked regularly. This instrument should be checked at least once a year. For checking and calibration, contact one of our accredited metrology laboratories (information and contact details available on request), at our Chauvin Arnoux subsidiary or the branch in your country.

6.4. AFTER SALES SERVICE

For maintenance operations, only use specified spare parts. The manufacturer will not be held responsible for any accident occurring following a repair done other than by its After Sales Service or approved repairers. Maintenance For all repairs before or after expiry of warranty, please return the device to your distributor.49

U:_ _ _ _ V _ _ _ _ S Syst. 2-point