D&V Electronics CVT-7A User manual

CVT-7A Voltage Regulator Tester
Revision: 1.5
21 June, 2010
P/N: 805-0037
Revision: 14
(12 September 2002)
P/N: 805-0032
D&V Electronics Ltd
130 Zenway Blvd.
Woodbridge, Ontario
Canada L4H 2Y7
Tel: [phone]
Fax: [phone]
For Models:
•
CVT-7A

How to use this manual
Items explained in the Glossary of Terms are italicized in this manual. Attention is focused
on information specific to tester operational instructions. Please refer to the Glossary of
Terms for explanations of alternator and regulator terms and functions.
In many cases specific instructions are followed shortly by illustrations
Knowledge Base Articles are updated periodically via the D&V Electronics website Contact
a D&V Representative to obtain a user name and password for this area. The D&V website
address is http://www.dvelectronics.com
This manual may be comprised of several sections It is separated into multiple files to
reduce file size This allows for easier document distribution via Email and the Internet As the
manual evolves, it may be updated in sections Each section cover page or chapter marker
includes the revision number The revision may be different for each chapter depending when
the document was written and last updated The files are distributed in Adobe Acrobat “PDF”
format PDF or “Portable Document Format” is an industry standard for distributing technical
manuals and documentation electronically To obtain the free Acrobat Reader software for
viewing “PDF” files, please visit Adobe’s Web Site:
http://wwwadobecom/products/acrobat/readstep.html
Before using the CVT-7A Regulator Tester:
Before using the regulator tester, please read this manual carefully to use the equipment to
its optimum. After reading this manual, please keep it in a safe place for later reference
Attention!
Please forward this manual to the end user
Adobe Acrobat is registered Trademark of Adobe Systems Incorporated
MS Excel is a registered Trademark of Microsoft Corporation

CVT-7AManualV1.5.doc Page 1
Page #
Safety Requirements 3
Installation and Setup 5
Machine Layout Diagram 5
Electrical Power Requirements 5
Setup Procedure 6
Computer Connections 6
Power Up / Power Down Sequence 6
Adjust LCD Screen Contrast 6
Operation With A Foot Switch 6
How to use the Key Pad 6
How to Activate Help Menu 6
Printed Reports 7
SETUP Mode 7
Mode - F1 7
Print - F2 7
Reset - F3 7
Report - F4 7
Sound - F5 7
Save - F6 7
Test Modes: 9
MANUAL Test Mode – F4 9
Instructions 9
Function Keys (F1 – F6) 9
Check Comp – F1 9
Check Lamp - F2 9
Check Sense – F3 9
Check FB – F4 9
Check Stator – F5 9
Check Energize – F6 9
AUTO Test Mode – F5 10
Instructions 10
Test Results 11
SMART (SORT) Test Mode – F6 11
Smart Plugs 11
Instructions 11
CVT-7A Users Manual Index

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Page #
SPECS (Specification Menu) 12
Setup New Part Number 12
Edit Test Specifications 14
Delete Test Specifications 14
List Test Specifications (print catalogue) 14
Erase All Data 14
Communication 14
CALIBRATION 15
Appendix A Glossary of Terms 18

CVT-7AManualV1.5.doc Page 3
Safety Requirements!
CAUTION: TO REDUCE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER
OR BACK.
NO USER-SERVICEABLE PARTS INSIDE. PLEASE REFER TO A QUALIFIED SERVICE
TECHNICIAN.
A. Read Instructions: All safety and operation instructions should be read before the
product is operated.
B. Retain Instructions: The safety and operating instructions should be retained for future
reference.
C. Heed Warnings: All of the warnings on this product and in the operating instructions
should be adhered to.
D. Follow Instructions: All operating and use instructions should be followed.
E. Cleaning: Unplug this product from the wall outlet before cleaning. Do not use liquid
cleaners or aerosol cleaners. Use a slightly damp cloth for cleaning.
F. Water and Moisture: Do not use this product near water.
G. Accessories: Do not place this product on an unstable cart, stand, tripod, bracket or
table. The product may fall, causing serious injury, and serious damage to the product.
H. Ventilation: Slots and openings in the unit are provided for ventilation and to ensure
reliable operation of the product, to protect it from overheating, thus these openings must not
be blocked or covered. This product should not be placed in a built-in installation such as a
bookcase or rack unless proper ventilation is provided or the manufacturer's instructions have
been adhered to.
I. Grounding: This product is equipped with a three-wire grounding-type plug, a plug having
a third (grounding) pin. This plug will only fit into a grounding-type power outlet. This is a
safety feature. If you are unable to insert the plug into the outlet, contact your electrician to
replace your obsolete outlet. Do not defeat the safety purpose of the grounding-type plug.

CVT-7AManualV1.5.doc Page 4
J. Power Cord Protection: Power supply cords should be routed so that they are not likely
to be walked on or pinched by items placed upon them, paying particular attention to cords at
plugs and the point where they exit the product.
K. Lightning: For added protection of this product during a lightning storm or when it is left
unattended and unused for long periods of time, unplug it from the wall outlet. This will
prevent damage to the product due to lightning and power-line surges.
L. Overloading: Do not overload wall outlets or extension cords as this can result in a risk of
fire or electric shock.
M. Object and Liquid Entry: Never push objects of any kind into this product through the
openings as they may touch dangerous voltage points or short out parts that could result in a
fire or electric shock. Never spill liquid of any kind on the product.
N. Servicing: Do not attempt to service this product yourself as opening or removing covers
may expose you to dangerous voltage or other hazards. Refer all servicing to qualified
service personnel.
O. Damage Requiring Service: Unplug this product from the wall outlet and refer servicing
to qualified service personnel under the following conditions:
1) When the power supply cord has been damaged
2) If liquid has been spilled or objects have fallen into the product
3) If the product has been exposed to rain, water, or other conductive liquids
4) If the product does not operate normally by following the operating instructions
5) If the product has been dropped or damaged in any way
6) When the product exhibits a distinct change in performance.
P. Replacement Parts: When replacement parts are required, be sure the service technician
has used replacement parts specified by the manufacturer or have the same characteristics
as the original part. Unauthorized substitutions may result in fire, electric shock, or other
hazards.
Q. Heat: The product should be situated away from heat sources such as radiators, heat
registers, stoves or other products that produce heat.

CVT-7AManualV1.5.doc Page 5
Rear View of Tester
Electrical Power Requirements
•Main Power: 120 or 220 VAC 50/60Hz.(Preset at factory, not user selectable)
•Maximum Current: 0.5 A for 220 VAC or 1 A for 120 VAC
•Fuses 2 x 250V/1A, located in the power entry module
Specifications
•Voltage set point 6-40 Volts ± 0.1 Volt
•Field switching frequency 10-10000Hz
•Field current up to 3 Amps
•Stator frequency 100 to 600Hz
•Lamp voltage 0 to 30 Volts
•Feedback voltage 0 to 30 Volts
•Weight 6 Kg
•Dimensions 28x28x10 Cm
•CE certified.
Installation & Setup
Rating plate on top of tester
OR
Printer PC
To foot switch
On & Off
Switch To regulator
or fixture
To plug harness or
fixture
Power cord
receptacle
Fuses

CVT-7AManualV1.5.doc Page 6
Setup Procedure
•Connect the tester’s power cord to a properly grounded receptacle.
Computer Connections (optional)
•Connect the female – female DB9 Null Modem serial cable to the computer and the
tester.
Power Up & Power Down Sequence
•To turn the tester ON and OFF use the switch located on the rear panel of the tester.
Front View of Tester
Adjust LCD Screen Contrast
•After the switch is turned on and the tester is booting up then it is possible to adjust the
screen contrast. This will adjust the brightness or darkness of the background and text
displayed. While the tester is booting up CVT-7A will be displayed on the screen
•During boot up press the buttons below –(F1) to darken or +(F2) to lighten the screen
contrast.
•After a 4 second delay or if Exit – F6 is pressed the screen contrast setting will be
saved until the next time it is adjusted.
Operation With A Footswitch
•An optional footswitch D&V P/N # 420-0106 is available. This allows the operators to
operate hands free and start the Manual, Auto or Smart test with a footswitch.
How to use the Key Pad
•CVT-7A keyboard works in very similar way to a telephone keypad. To type numbers
press the corresponding keys. To type letters (which are on number pads) press the
key where the letter appear and hold the key down until the proper letter appears on
the screen. Once the character requested appears release, the key and that letter will
remain on the screen. If you press the same, key again a new character will be

CVT-7AManualV1.5.doc Page 7
entered. To finish entering press OK/Enter key to confirm the data. If you make a
mistake, the last letter entered can be deleted by pressing 'DEL' key.
•After a part number has been selected the testers remembers this part number until
the tester is powered off. This applies in all modes where it is possible to enter a part
number. When the tester prompts the operator to “Enter a part number” press the
ENTER key to enter the number stored in memory.
How to activate the HELP menu
•To activate help function press HELP key and the tester will display menu with
information about current mode of operation. Using F5 (NEXT) and F4 (PREV) keys
select the item you need help with. Press OK or F6 keys to confirm and the tester will
display help for this item. Once this feature has been explained the machine will return
to the main menu.
Printed reports
•It is possible to print a simple statistical report using the 170-0013 printer from D&V
Electronics. Communication settings from the tester to the printer are:
Serial 9 Pin (RS232)
Communication Speed Bits per second: 9600 bps
Data Length: 8 bits
Parity: Odd
Stop Bits: 1
No Flow Control
Press the Setup key to access the tester’s setup menu. The F1 – F6 keys below the
display correspond to the text and functions on the display. Any item that is struck
through with a line is disabled. It is possible to change the tester’s general setup for
the following items:
SAVE
MODE PRINT RESET REPORT SOUND
F1 F2 F3 F4 F5 F6
SETUP Mode

CVT-7AManualV1.5.doc Page 8
•MODE F1: switches between testing with a fixture and the plug with the test clips. In
both modes it may be necessary, depending on the configuration of the regulators
terminals, to also connect either a plug or clips to the regulator.
•PRINT F2: will enable the tester to print test results, statistics, and print out a list of
regulators programmed into the tester’s memory.
•RESET F3: resets the statistical counters of Good, Bad, Total back to 0.
•REPORT F4: enables a printout of the good regulator’s test results.
•SOUND F5: enables or disables an audible beep during testing and setup.
•SAVE F6: saves the setup configuration to memory for use during other tester modes.

CVT-7AManualV1.5.doc Page 9
Manual Test Mode will allow the operator to manually activate the measurement and checks
of terminals and regulator functions individually.
1. Press the TEST key then, press the Manual F4 key to activate the manual test.
The tester will ask a series of prompts to automatically configure the tester’s
setup. They can include:
2. Select operating voltage (12, 24 or 32).
3. Is this a regulator with the sense terminal connected to the stator (as Ford ASI)
(YES or NO)
4. Is this a regulator with feedback terminal with pull-up resistor? (YES or NO)
5. Tester ready Press ENTER or activate the footswitch to begin new test.
•The test now begins and it is possible to check the regulators functions. Press one of
the buttons below the text on screen to activate a test procedure. The test functions
available are:
F1 C/PCM: checks the Computer terminal function.
F2 LAMP: checks if Lamp terminal is Active or Inactive Lamp type.
F3 SENSE: checks the SenseTerminal & Secondary Regulation
F4 F/FR: checks the regulators Feedback signal.
F5 STATOR: checks the Stator terminal output.
F6 ENERG: checks the AC Energize circuit of regulator.
TEST Modes
SELECT TEST MODE:
MANUAL AUTO SMART
F1 F2 F3 F4 F5 F6
BATTERY FIELD PARAMETERS
14.16 5.7
C/PCM LAMP SENSE F/FR STATOR ENERG
Vlamp=14.1
Vfb = 0.0
Vsta = 0.0
Vm = 3.0
F1 F2 F3 F4 F5 F6

CVT-7AManualV1.5.doc Page 10
•The Voltage Set Point (Battery) and the Field Voltage are displayed on screen.
Lamp, Feedback, Stator and Momentary Field Voltages are also displayed. In
manual mode it is possible to view the measured results while the test is active;
however it is not possible to print these results.
•Press ENTER key or footswitch to stop the test.
AUTO Test Mode will allow the operator to quickly measure and check regulator and
terminal functions compared to the programmable limits and then, display Pass, Fail or Error
messages. See the SPECS section instructions to program limits.
1. Press the TEST key then; press the Automatic F5 key to activate the automatic
test.
2. The tester will prompt the operator to “Enter Valid Part Number”. Enter the part
number using the tester’s numerical keypad.
3. The tester may prompt the operator to connect a plug or fixture. Connect the
fixture, plug, and or test clips as needed.
4. Press the ENTER key to start the test or press the footswitch.
5. After the test is complete the tester analyzes the results and compares them to
the programmed limits. The displayed result will be Good Regulator or
Regulator Fail, This unit is out of specs, or a specific error message about an
individual function. The operator will be prompted to “Activate the footswitch or
press ENTER for a new test, Press any other key to view the test results”.
6. Press any key to view the test results. If there are two pages of test results the
operator will be prompted “Press F6 for more information” to see the next page.
Press any key again to cycle the pages of test results.
7. If the regulator fails, => will be indicate which test result is outside of the limits.
Following is a list of the test results.
BATTERY FIELD PARAMETERS
08.04 0.0
Check regulation and ssd……
Vlamp= 1.4
Vfb = 0.0
Vsta = 0.0
Vm = 0.0
F1 F2 F3 F4 F5 F6

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Test Results
*Description Unit of Measure
Soft Start Field: DC Voltage
Soft Start Delay: Seconds
Load Response Control: Seconds
Stator Voltage: DC Voltage
Voltage Set Point: DC Voltage
Secondary Regulation: DC Voltage
Lamp Terminal Voltage: DC Voltage
Lamp Type: Active or Inactive
Lamp Status @ Computer: On or Off
Voltage Set Point @ Computer: Voltage
Lamp Status: On or Off
Feedback @ 25% load: DC Voltage
Feedback @ 75% load: DC Voltage
Lamp Status @ AC Test: On or OFF
PLIS/PLFS Test: PLIS or PLFS
*See Glossary for definition of descriptions
8. To test another regulator, connect or place in fixture as required and press
ENTER or press the foot switch to activate the next test.
9. To test a different regulator in Automatic Mode press the TEST key and return
to step one of this procedure.
Smart Test Mode (sort mode) will allow the operator to quickly sort & test regulator
models compared to the programmable limits and then, display Pass, Fail or Error
messages. Smart mode utilizes D&V Electronics Smart Plugs for the CVT-7A
Regulator tester only! See the SPECS section instructions to program limits.
•Smart Plugs have a memory chip built into the plug assembly. Smart plugs can
be programmed with DV Basic language. Test specifications, procedures, and
instructions can be easily written into a text file and loaded into the Smart Plug
via the tester’s communication mode.
1. Press the TEST key, then press the SMART F6 key. The tester will prompt the
operator to “Connect the smart harness to the tester”
2. Connect the required harness then press any key to continue. The tester will
search for test procedures and specifications from the Smart Plug and use
these for the testing and sorting.
3. Connect the regulator and or fixture as required.
4. Press ENTER or activate the footswitch to begin the test.

CVT-7AManualV1.5.doc Page 12
5. After the test is complete the tester analyzes the results and compares them to
the programmed limits. The displayed result will be the sorted regulator type
specific to the function preloaded in the SMART plug. In general the tester can
display messages as Good Regulator or Regulator Fail, This unit is out of
specs, or a specific error message about a special function. The operator can
be prompted to “Activate the footswitch or press enter for a new test, Press any
other key to view the test results”. Because the messages displayed are defined
in the SMART plug, they can be different for different plugs.
6. Press any key to view the test results. If there are two pages of test results the
operator will be prompted “Press F6 for more information” to see the next page.
Press any key again to cycle the pages of test results.
7. If the regulator fails, => will be indicate which test result is outside of the limits.
The list of test results is same as with automatic mode.
SPECS mode is used for the setup and management of test specifications.
•Press the SPECS key then use the - F1 or the + F2 key to scroll through the menu
options, then press ENTER to make selection.
Setup New Part Number is for the creation of a new part numbers profile and test
specifications.
1. The tester will prompt “Enter New Part Number”. Enter the part number with the
key pad. To use alpha characters press and hold the key until the desired letter
is displayed.
2. Select the voltage regulators rated voltage 12, 24, or 32 Volts.
3. Answer Yes/No when asked, “Is this a regulator with diode trio?”.
4. Enter the number of the plug to connect to the regulator. If the universal
harness with the test clips is to be used, skip this by pressing ENTER.
SPECS
*** 3 pin denso smart harness ***
sort lis/lic/lid/lid* regulators
v1r1
press any key when ready!
F1 F2 F3 F4 F5 F6

CVT-7AManualV1.5.doc Page 13
5. Select the terminal configuration by pressing the key below the corresponding
text. Press the button repeatedly until the desired terminal designation is
displayed. The function key and screen is as follows:
TACHO LAMP IGN FEEDBACK SENSE NEXT
P, W, AC L, D+ Lo Ig, R F, Fr, Li S, Sr
F1 F2 F3 F4 F5 F6
Example:if your regulator is equipped with a “W” terminal press the F1
key repeatedly until “W” is displayed in the terminals list on the display.
6. Press F6 after you have selected the required terminals.
7. Select the remaining terminals from the list displayed, see illustration below:
COMP BATT REG CTRL DUMMY NEXT
C,G A, B+ RC D
F1 F2 F3 F4 F5 F6
8. After you have compiled the terminal list, press ENTER key to finish the entry.
9. Next select the regulators operational functions, see next illustration.
ACTIVE AC
LRC SSD SS LAMP ENERGIZE
F1 F2 F3 F4 F5 F6
10.Press ENTER F6 key after you have selected the functions.
11.If the terminal setup was PLIS the tester will ask “Is this Delco CS(PLIS)
regulator?” Press the YES/NO key. This configures the test procedure to
automatically fail any regulator with different terminals, such as a PLFS type.
12. The next prompt is “Is the sense terminal connected to the stator?” Press the
YES/NO key
13.Depending on the selections from the terminal and function list, a list of
parameters and limits will be displayed next. Enter the Minimum and or
Maximum values for the limits. Use the keypad to enter the values, press
ENTER when complete, the cursor will advance to the next limit. Following is a
list of all programmable limits.

CVT-7AManualV1.5.doc Page 14
Enter minimum voltage set point:
Enter maximum voltage set point:
Enter lamp voltage @ stop:
Enter maximum lamp voltage @ stop:
Enter minimum LRC Delay:
Enter Maximum LRC Delay:
Enter minimum SSD Delay:
Enter Maximum SSD Delay:
Enter Maximum Set point @ computer:
Enter minimum VSP @ RC Control:
Enter maximum VSP @ RC Control:
14.Press OK to save the specs.
Edit Test Specifications will allow the operator to Edit and then save a part numbers
terminals, functions and test specifications.
1. Enter the part number you wish to edit, then press ENTER.
2. Answer: “Do you want to change the terminals?” Press YES/NO key.
3. Answer: Do you want to change the regulator functions?” Press Yes/NO key
•If you answered yes to either of the questions then the corresponding list of functions
or terminals will be available with the same menus as with the Setup New Part
Number procedure.
Delete Test Specifications will remove a part number and its specs from memory.
1. Enter the part number you wish to Delete, then press ENTER.
2. Answer: “Do you want to delete this part number?” Press YES/NO key.
List Test Specifications (print catalogue) will display a list of the specs in the tester’s
memory to the screen or print them to a printer attached to the testers RS232 serial port.
•The list will include the Part Number, Voltage and Terminals.
1. Answer: “Do you want printed report?’ Press YES/NO key.
YES = the report will be printed.
NO = the list will be displayed on the screen.
2. Press any key to stop the printing.
Erase All Data will erase ALL of the part number profiles programmed into the tester.
3. Answer: “Do you want to erase all data?” Press YES/NO key.
4. Answer: “ATTENTION ALL DATA WILL BE ERASED! DO YOU WANT TO
CONTINUE?” Press YES/NO key.
Communication mode allows PC data exchange. It also passes Smart Plug programs
and test specifications from a PC through the tester to the Smart Plug.

CVT-7AManualV1.5.doc Page 15
To place the tester into Calibration Mode press and hold the SPECS button and turn the
power switch on. A D&V # 420-0109 calibration harness and an accurate digital
multimeter, that will measure voltage, are required to perform the calibration of the CVT-
7A.
The password is F1 F5 F2 F6.
In Calibration Mode it is possible to do the following:
F1 - Calibrate All Voltage Inputs - Start a New Calibration
F2 - Set Default Scale - Set the tester to the Default Calibration Scales
F3 - Display Calibration Report - Display the current Scales
F4 - Print Calibration Report - Printout a Calibration Scale report.
F5 - Store Calibration Scales - Save the current Scales
F6 - Exit This Mode - Exits Calibration Mode
CALIBRATION
*** CVT-7 CALIBRATION MODE ***
Enter password:
F1 F2 F3 F4 F5 F6
Select CALIBRATION MODE:
F1 - Calibrate All Voltage Inputs
F2 - Set Default Scale
F3 - Display Calibration Report
F4 - Print Calibration Report
F5 - Store Calibration Scales
F6 - Exit This Mode
Press F1-F6 to continue!
F1 F2 F3 F4 F5 F6

CVT-7AManualV1.5.doc Page 16
Press F1 to start the calibration.
Connect the Calibration Harness to the Tester leads.
WARNING: The Field Switch on the Alternator Cable (Rev 2) MUST be in the B
position when calibrating, or the + and – will be shorted.
Connect the calibration box to the tester and press
any key when ready!
F1 F2 F3 F4 F5 F6
Connect a precise voltmeter to the calibration box
voltage output!
Press any key when ready
F1 F2 F3 F4 F5 F6

CVT-7AManualV1.5.doc Page 17
Connect a DMM, set to DC Volts to the leads on the Test Harness
Enter the voltage value displayed on DMM with keypad and press ENTER.
Press F5 to save the new calibration.
If you have a printer connected to the serial port you can press F6 to print a calibration
report:
CVT-7 CALIBRATION REPORT No:.....
TIME:.......
DATE:.......
Calibration scale Vb =
Calibration scale Vf =
Calibration scale Vl =
Calibration scale Vs =
Calibration scale Vfld =
Calibration scale Vset =
EQUIPMENT USED:........................
1....................................
2....................................
3....................................
PERFORMED BY:..........................
SIGNATURE :..........................
Enter the voltage reading:
F1 F2 F3 F4 F5 F6

CVT-7AManualV1.5.doc Page 18
APPENDIX
Glossary of Terms – Alternators & Regulators
Revision: 1.3
(21 June, 2010)
D&V Electronics Ltd
130 Zenway Blvd.
Woodbridge, Ontario
Canada L4H 2Y7
Tel: [phone]
Fax: [phone]
For Models:
•
Alternator &
Regulator Testers