Associated Research Quadchek II 7504SA Operation And Service Manual
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Associated Research Quadchek II 7504SA Operation And Service Manual

Electrical safety compliance analyzers
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OPERATION AND SERVICE MANUAL
â
MODEL 7504SA QUADCHEK
II
â
MODEL 7500DT HypotULTRA
II
Electrical Safety Compliance Analyzers
AC/DC HIPOT WITH INSULATION RESISTANCE TESTER including
500VA OUTPUT CAPACITY,
IEEE-488 (GPIB) or RS-232 INTERFACE
and
GROUND BOND TESTER on 7504SA, or
CONTINUITY TESTER on 7500DT
SERIAL NUMBER
Models
© Associated Research, Inc., 2005
13860 West Laurel Drive
7504SA/7500DT
Lake Forest, Illinois, 60045-4546
U.S.A.
Item 37988
Ver 1.14
Printed January 13, 2005
i

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  • Page 1 500VA OUTPUT CAPACITY, IEEE-488 (GPIB) or RS-232 INTERFACE GROUND BOND TESTER on 7504SA, or CONTINUITY TESTER on 7500DT SERIAL NUMBER Models © Associated Research, Inc., 2005 13860 West Laurel Drive 7504SA/7500DT Lake Forest, Illinois, 60045-4546 U.S.A. Item 37988 Ver 1.14...
  • Page 2 DECLARATION OF CONFORMITY Manufacturer: Associated Research, Inc. Address: 13860 W. Laurel Dr. Lake Forest, IL 60045 Product Name: QUADCHEK® Electrical Safety Compliance Analyzer Model Number: 7500DT, 7504SA Conforms to the following Standards: Safety: EN 61010-1:1993+A2, EN 61010-2-031:1994 EMC: EN 50082-1: 1992, EN 50081-1:1992...
  • Page 3 Warranty Policies Associated Research, Inc., certifies that the instrument listed in this manual meets or exceeds published manufacturing specifications. This instrument was calibrated using standards that are traceable to the National Institute of Standards and Technology (NIST). Your new instrument is warranted to be free from defects in workmanship and material for a period of (1) year from date of shipment.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS SECTION I OPERATORS MANUAL................. 1 SAFETY ............................2 INTRODUCTION.......................... 7 SPECIFICATIONS ........................13 WHAT S NEW ..........................20 CONTROLS..........................23 INSTALLATION ......................... 28 QUICK START..........................31 OPERATION ..........................34 OPTIONS ............................. 79 SECTION II SERVICE MANUAL ................88 CALIBRATION ...........................

  • Page 5: Section I Operators Manual

    SECTION 1 OPERATORS MANUAL...

  • Page 6: Safety

    SAFETY SAFETY PRECAUTIONS REQUIRED FOR HIGH VOLTAGE TESTING! GENERAL: This product and its related documentation must be reviewed for familiarization with safety markings and instructions before operation. This product is a Safety Class I instrument (provided with a protective earth terminal). Before applying power verify that the instrument is set to the correct line voltage.
  • Page 7 The instrument and its power cord, test leads, and accessories must be returned at least once a year to an Associated Research authorized service center for calibration and inspection of safety related components. Associated Research will not be held liable for injuries suffered if the instrument is not returned for its annual safety check and maintained properly.
  • Page 8 SAFETY If benches are placed back-to-back, be especially careful about the use of the bench opposite the test station. Signs should be posted: "DANGER - HIGH VOLTAGE TEST IN PROGRESS - UNAUTHORIZED PERSONNEL KEEP AWAY." Power Dielectric Voltage-Withstand Test Equipment must be connected to a good ground. Be certain that the power wiring to the test bench is properly polarized and that the proper low resistance bonding to ground is in place.
  • Page 9 SAFETY resistance. They should recognize that the test instrument is a variable high-voltage power supply with the return circuit directly connected to earth ground and therefore, current from the high-voltage output will flow through any available ground path. Safety Procedures Operators should be thoroughly trained to follow these and all other applicable safety rules and procedures before they begin a test.
  • Page 10 SAFETY HOT STICK probes can be used to discharge any capacitance in the item under test as a further safety precaution. A hot stick is a nonconducting rod about two feet long with a metal probe at the end which is connected to a wire. To discharge the device under test, two hot sticks are required.

  • Page 11: Introduction

    Hipot Tester: Common term for dielectric-withstand test equipment. Hypot®: Registered trademark of Associated Research, Inc., for its dielectric-withstand test equipment. Gas, liquid or solid material which has a volume resistivity of at least 10 12 ohm-cm and is Insulation: used for the purpose of resisting current flow between conductors.
  • Page 12 INTRODUCTION INTRODUCTION The importance of testing... User safety In an era of soaring liability costs, original manufacturers of electrical and electronic products must make sure every item is as safe as possible. All products must be designed and built to prevent electric shock, even when users abuse the equipment or by-pass built in safety features.
  • Page 13 INTRODUCTION normal operating voltage, plus 1,000 volts. However, specific products may be tested at much higher voltages than 2X operating voltages + 1,000 volts. For example, a product designed to operate in the range between 100 to 240 volts, can be tested between 1,000 to 4,000 volts or higher. Most "double insulated"...
  • Page 14 INTRODUCTION there is no need to gradually bring up the voltage since there is no stabilization required to monitor the current reading. This means that unless the product is sensitive to a sudden application of voltage the operator can immediately apply full voltage and read current without any wait time.
  • Page 15 INTRODUCTION current reaches the leakage threshold during the initial charging of the product under test. Since a DC hipot does charge the item under test it becomes necessary to discharge the item after the test. DC testing unlike AC testing only charges the insulation in one polarity. This becomes a concern when testing products that will actually be used at AC voltages.
  • Page 16 INTRODUCTION The Ground Bond Test The Ground Bonding test determines whether the safety ground circuit of the product under test can adequately handle fault current if the product should ever become defective. A low impedance ground system is critical in ensuring that in the event of a product failure a circuit breaker on the input line will act quickly to protect the user from any serious electrical shock.

  • Page 17: Specifications

    SPECIFICATIONS Model 7504SA, and 7500DT Functional Specifications INPUT 100/115/200/230 VAC ± 10%, Single Phase, User selection Voltage Frequency 47 - 63 Hz Fuse 15 Amp 250V fast blow internal DIELECTRIC WITHSTAND TEST MODE Output Rating 5 KV @ 100 mA AC, 6 KV @ 10 mA DC Output Adjustment Range:...
  • Page 18 SPECIFICATIONS Current Display Auto Range AC Range 1: 0.000mA - 3.500mA Resolution: 0.001mA/step ± (2% of reading + 0.003mA) Accuracy: Range 2: 3.00 - 99.00 mA Resolution: 0.01 mA/step ± (2% of reading + 0.06mA) Accuracy: 0.0 mA - 350.0 mA DC Range 1: 0.1 mA/step Resolution:...
  • Page 19 SPECIFICATIONS INSULATION RESISTANCE TEST MODE Output Voltage Range: 100 - 1000 Volts DC Resolution: 1 volt/step ± (2% of reading + 2 volts) Accuracy: Short Circuit Current Maximum: 12mA peak Voltage Display Range: 0 - 1000 V Resolution: 1 volt/step ±...
  • Page 20 SPECIFICATIONS GROUND BOND TEST MODE Model 7504SA only Output Voltage Range: 3.00 - 8.00 Volts AC (Open Circuit Limit) Resolution: 0.01 volt/step ± (2 % of Setting + 0.03V ) O.C. Condition Accuracy: Output Frequency Range: 60 or 50 Hz, User Selection ±1% Accuracy: Output Current...
  • Page 21 SPECIFICATIONS GENERAL SPECIFICATIONS Input - Test, Reset, Recall memory # 1, # 2 and # 3 PLC Remote Control Output - Pass, Fail, Test-in-Process Memory Allows storage of up to 50 groups different test programs and 8 step/each memory. Security Programmable password lockout capability to avoid unauthorized access to test set-up program.
  • Page 22 SPECIFICATIONS KEY FEATURES & BENEFITS SUMMARY: MODELS 7500DT & 7504SA § The first complete systems to HypotULTRA II combines the three most common dielectric safety tests (AC Hipot, DC Hipot & IR test) include AC Hipot, DC Hipot, required by agencies such as UL, CSA, IEC, VDE, TÜV, Insulation Resistance and Ground BABT and others into a single instrument which takes up Bond test into a single 19 inch...
  • Page 23 SPECIFICATIONS § Exclusive SmartGFI function The SmartGFI (patent pending) provides maximum operator protection to the user. If the circuit detects excessive leakage to ground it shuts down the high voltage in less than 1 millisecond. SmartGFI is automatically activated if the DUT is not grounded. The operator does not need to make the decision whether to activate the SmartGFI.

  • Page 24: What S New

    WHAT S NEW What s new with QUADCHEK II, 7504SA and HypotULTRA II, 7550DT. · Optional built-in scanner interface- These instruments now offer the capability of easily and quickly testing multiple products or multiple points with a single instrument. These instruments include an interface to allow control of up to two external scanners for a total of 16 port control through the instrument without any additional interface requirements.
  • Page 25 WHAT S NEW need to make any difficult calculations to determine what the setting should be. · Enhanced Milliohm offset - The milliohm offset function has been added to each step in the memory to allow for different lead lengths when using a scanner to perform multiple ground bond tests.
  • Page 26 WHAT S NEW · Buffer Memory - This new feature stores the complete test results for up to 8 tests, so that the user can go back and review the complete test results for each step at the end of a test. ·...

  • Page 27: Controls

    CONTROLS FRONT PANEL CONTROLS 7500DT and 7504SA 10 11 14 15 19 20 ARC LED: This indicator will illuminate when the Arc Detector has detected an arcing condition. This indicator will function even when the Arc Fail has been disabled. LOCK LED: When the Lock LED is on, the "password"...
  • Page 28 CONTROLS 10 11 14 15 19 20 MEMORY: (PROGRAM KEY) Use this key to select one of the 50 memories to modify or run stored test parameters. STEP: (PROGRAM KEY) Use this key to select one of the 8 locations contained within each memory.
  • Page 29 CONTROLS 10 11 14 15 19 20 15. UP-DOWN ARROW KEYS: (PARAMETER KEY) Use these keys to enter and move through the function parameter menus for AC-W, DC-W, IR, and G-BOND tests. 16. DATA ENTRY KEYS: Use these keys to input numeric parameters followed by the ENTER key.
  • Page 30 CONTROLS REAR PANEL CONTROLS 7500DT and 7504SA SCANNER 1, SCANNER2 CONNECTORS: For connection of optional Scanning Matrix HS-8A (or previous model HS-8). REMOTE SIGNAL OUTPUT: 9-Pin D subminiature female connector for monitoring PASS, FAIL, and PROCESSING output relay signals. REMOTE SIGNAL INPUT: 9-Pin D subminiature male connector for remote control of test and reset functions as well as program memory selection 1, 2, or 3.
  • Page 31 CONTROLS INPUT POWER SWITCHES: Line voltage selection is set by the position of these two switches. Follow the switch selection map to the left of the switches for the proper voltage selection. The two most common configuration are 115V and 230V input.

  • Page 32: Installation

    If the shipping carton is damaged, inspect the contents for visible damage such as dents, scratches or broken meters. If the instrument is damaged, notify the carrier and the Associated Research customer support department immediately. Please save the shipping carton and packing material for the carriers inspection. Our customer support department will assist you in the repair or replacement of your instrument.
  • Page 33 INSTALLATION This instrument is shipped with a three-wire power cable. When this cable is connected to an appropriate AC power source, this cable connects the chassis to earth ground. The type of power cable shipped with each instruments depends on the country of destination. Operating Environment This instrument may be operated in temperatures from 32°...
  • Page 34 INSTALLATION 3). Use a layer of shock-absorbing material 70 to 100 mm (3 to 4 inch) thick around all sides of the instrument. Protect the control panel with cardboard. 4). Seal the container securely. 5). Mark the container "FRAGILE" to insure proper handling. 6).

  • Page 35: Quick Start

    QUICKSTART QUICK START This quick start guide assumes the operator has some familiarity with automated testing and desires to use the "default" settings on the instrument. The default settings shown will remain in memory unless you choose to override them with your own test program. The instrument default settings that appear in memories 1-40 are as follows: DEFAULTS Function...
  • Page 36 QUICKSTART Defaults cont. Function Parameter Value Current 25.00A Voltage 6.00V HI-Limit 100mW LO-Limit Dwell 1.0s Frequency 60Hz Scanner Offset Connect Setup PLC Remote Address (GPIB only) Contrast Volume Fail Stop Calibration Password MR-Lock Quick Start Instructions Cont.: a). Unpack the instrument from its special shipping container. Be sure to save all packaging materials in case you need to return it to the factory for service.
  • Page 37 QUICKSTART return lead first (black) to the test fixture or item followed by the high voltage output lead (red). Note: The Return Lead of this instrument is not connected directly to Earth Ground. If the DUT contacts Earth Ground directly, the instrument automatically operates in a grounded return mode.

  • Page 38: Operation

    OPERATION 1. General Setup Procedures 1.1 Key Lock setting Press the LOCK key. If the Password is Enabled, the display will show: Password = _ _ _ _ Range : 0 - 9 9 9 9 To view the password or enter a new one refer to the calibration procedure. Use the Numeric Key to enter the password and then press the ENTER key.
  • Page 39 OPERATION Memory map Memory 1 Step 1 Step 2 ..Step 8 G-Bond G-Bond G-Bond Memory 2 Step 1 Step 2 ..Step 8 G-Bond G-Bond G-Bond Memory 50 Note: On model 7500DT disregard the location for G-Bond parameters. The Continuity parameter is stored within the ACW and DCW functions as a single setting for both modes.
  • Page 40 OPERATION 2. Function Parameters Setup Procedures Before going to setup the Test Parameters, make sure that the Keyboard is in the Unlock mode, then follow this procedures to setup the Test Parameters. 2.1 AC Withstand Voltage test setting Press the ACW key and the display will show: ACW Set XXX.X s MXX-X X.XX KV XX.XX mA...
  • Page 41 OPERATION 2.1.3 LO-Limit Current setting Advance the menu to the LO-Limit parameter. The display will show: LO-Limit = X.XXX mA Range : 0.000 - 9.999 Use the Numeric keys to enter the LO-Limit setting, then press the ENTER key. The program will store the LO-Limit setting and advance to the Ramp Time parameter automatically.
  • Page 42 OPERATION 2.1.6 Frequency Selection Advance the menu to the Frequency parameter and the display will show: Frequency = 60 Hz Frequency = 50 Hz <ENTER> to Select <ENTER> to Select Use the ENTER key to select the Output Frequency, then press the Ù or Ú key to advance to another test parameter or press the EXIT key to exit from the setting mode to the operation mode.
  • Page 43 OPERATION status and advance to the Connection setting automatically. The following table is the cross reference of the numeric keys, which are used for the Scanner channel setting. Channel Status Numeric Key Description H (High) Connected to High Voltage Output L (Low) Connected to Return ·...
  • Page 44 OPERATION Use the Ù or Ú arrow keys to progress through the test parameters menu. The Ú key will advance forward and Ù key will advance backward. The sequential forward menu items are Voltage, HI-Limit, LO-Limit, Ramp Time, Dwell Time, Charge-LO, Ramp-HI, Arc Sense, Arc Fail, Scanner Set, Offset, Connect.
  • Page 45 OPERATION 2.2.4 Ramp Time setting Advance the menu to the Ramp Time parameter. The display will show: Ramp Time = XXX.X s Range : 0.4 - 999.9 Use the Numeric keys to enter the Ramp Time setting, then press the ENTER key . The program will store the Ramp Time setting and advance to the Dwell Time parameter automatically.
  • Page 46 OPERATION To use Auto Set, be sure that the test parameter of Output Voltage and Ramp Time have been set to the values that will be used for the Final test and connect the test cables and/or test fixture between the instrument and DUT. If the scanner is to be used then the scanner channel must also be set, and then press the TEST button.
  • Page 47 OPERATION Fail mode selection automatically. The display will show: Arc Fail = Arc Fail = OFF <ENTER> to Select <ENTER> to Select Use the ENTER key to select the Arc Fail mode, then press the Ù or Ú key to advance the program to another test parameter or press the EXIT key to exit from the setting mode to the operation mode.
  • Page 48 OPERATION 2.2.10 Step Connection setting Advance the menu to the Connection parameter. The display will show: Connect = Connect = <ENTER> to Select <ENTER> to Select Use the ENTER key to select the Step Connection mode, then press the Ù or Ú key to advance the program to another test parameter or press the EXIT key to exit from the setting mode to operation mode.
  • Page 49 OPERATION 2.3.2 Charge-LO Advance the menu to the Charge-LO parameter. The display will show: Charge-LO = X.XXX mA <TEST> to Auto Set The Charge-LO function is used to check if the test cables are connected properly at the beginning of a test. A capacitive DUT will draw charging current on the Insulation Resistance test when the Output is activated.
  • Page 50 OPERATION Use the Numeric keys to enter the HI-Limit setting, then press the ENTER key. The program will store the HI-Limit setting and advance to the LO-Limit parameter automatically. The unit is MW and 1 MW per step. Press the EXIT key to exit from the setting mode to the operation mode if all parameters have been set.
  • Page 51 OPERATION 2.3.6 Scanner Channel setting Advance the menu to the Scanner Set parameter. The display will show: Scanner Set CH = 1 - 16 XXXXXXXXXXXXXXXX Note: X = H, O or L. Use the Numeric keys to enter the status of High, Open or Low for each scanner channel, then press the ENTER key.
  • Page 52 OPERATION GND Set : Ground Bond test setting screen XXX.X s : Dwell Time setting : Memory Program number : Test Step number XX.XX A : AC Output Current setting XX.XX mW : High-Limit of Ground Continuity Resistance Use the Ù or Ú arrow keys to progress through the test parameters menu. The Ú key will advance forward and Ù...
  • Page 53 OPERATION Use the Numeric keys to enter the HI-Limit setting, then press the ENTER key. The program will store the HI-Limit setting and advance to the LO-Limit parameter automatically. The unit is mW and 1 mW per step. Press the EXIT key to exit from the setting mode to the operation mode if all parameters have been set.
  • Page 54 OPERATION Use the ENTER key to select the Output Frequency, then press the Ù or Ú key to advance the program to another test parameter setting or press the EXIT key to exit from the setting mode to the operation mode. 2.4.7 Scanner Channel setting Advance the menu to the Scanner Set parameter.
  • Page 55 OPERATION The display will show the measured mW Offset value and the program will use this value for the Offset setting. Each step has its own individual Offset value and must be set separately. This allows the user to compensate for different lead lengths when using a scanner or external fixturing for Ground Bond testing.
  • Page 56 OPERATION does not have the GPIB interface card, the program will advance to the contrast setting, or press the EXIT key to exit from the PLC Remote selection to the operation mode. The instrument will store the selection of PLC Remote automatically.
  • Page 57 OPERATION operation mode. The program will store the Contrast setting automatically. The LCD Contrast level is from 1 - 9, a total of 9 levels. Level 1 is the lowest contrast and level 9 is the highest contrast. 3.4 Audible Alarm Volume setting Press the Setup key to advance the menu to the Volume parameter.
  • Page 58 OPERATION Test P F P F P F P F P F P F P F P F Step 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 First Memory Program Second Memory Program The pass fail status is indicated by the letter F (Fail) or P (Pass).
  • Page 59 OPERATION pressing the RESET button twice. The Function is indicated on the left side of the first line and the mode, or test result, is indicated just to the right of the Function. The timer is always shown on the right side of the first line. The left side of the second line always indicates the Memory and Step that has been selected and an underbar character to the right of the step number indicates that the step has been connected to the next step in sequence.
  • Page 60 OPERATION : Memory Program number : Test Step number XXXX V : DC Output Voltage XXXX MW : Low-Limit of Insulation Resistance If the first step selected is a Ground Bond test, the display will show: GND Set XXX.X s M25-1 XX.XX A XXX mW GND Set...
  • Page 61 OPERATION earth ground. If the operator accidentally touches the High Voltage lead and earth ground, the High Voltage will be shut off immediately and the test aborted. If the GFI threshold is exceeded, the display will indicate a GND Fault. Smart GFI allows the user to automatically configure the instruments return configuration.
  • Page 62 OPERATION At the beginning of the Ground Bond test, before the meter readings are taken, the display will show: GND Dwell XXX.X s MXX-X - - . - - A - - - mW During the Ground Bond test, when the values are being updated in real time, the display will show: GND Dwell XXX.X s...
  • Page 63 OPERATION meter readings are taken, the display will show: ACW Abort XXX.X s ACW Abort XXX.X s MXX-X - . - - KV - - . - - mA MXX-X X.XX KV - - . - - mA At the beginning of AC Withstand Voltage test when the voltage begins to ramp but before the meter readings are taken, the display will show: ACW Ramp XXX.X s...
  • Page 64 OPERATION If the DUT current is well beyond the metering range of AC Withstand Voltage test the instrument assumes that the failure is due to a short circuit, the display will show: ACW Short XXX.X s > 40 mA MXX-X - . - - KV If the DUT current is well beyond the metering range of AC Withstand Voltage test and an Arcing condition beyond the Arc Sense limit is indicated, the display will show:...
  • Page 65 OPERATION If the test in process is Aborted with the RESET button or remote control before the meter readings are taken, the display will show: DCW Abort XXX.X s DCW Abort XXX.X s - - - - mA - - - - mA MXX-X - .
  • Page 66 OPERATION If the DUT current exceeds the HI-Limit of DC Withstand Voltage test and the leakage current is within the metering range, the display will show: DCW HI-Limit XXX.X s MXX-X X.XX KV XXXX mA If the DUT current exceeds the HI-Limit of DC Withstand Voltage test and the leakage current is not within the metering range, the display will show: DCW HI-Limit XXX.X s...
  • Page 67 OPERATION When the DUT passed the DC Withstand Voltage test, when the test process is complete the display will show: DCW Pass XXX.X s MXX-X X.XX KV XXXX mA 5.4 The followings are the displayed messages for the Insulation Resistance test: If the test in process is Aborted with the RESET button or remote control, the display will show: IR Abort...
  • Page 68 OPERATION If the DUT current exceeds the HI-Limit of Insulation Resistance test and the resistance is not within the metering range, the display will show: IR HI-Limit XXX.X s MXX-X XXXX V > 9999 MW If the DUT current falls below the LO-Limit of Insulation Resistance test and the resistance is within the metering range, the display will show: IR LO-Limit XXX.X s...
  • Page 69 OPERATION 6. Connection Of Remote I/O Two 9 pin type connectors are mounted on the rear panel which provide REMOTE-INPUT-OUTPUT control and information. These connectors mate with standard 9 pin subminiature connector provided by the user. The output mates to a male (plug) connector while the input mates to a female (receptacle) connector. For best performance a shielded cable should be used.
  • Page 70 OPERATION what conditions activate each pin. When a terminal becomes active the relay closes thereby allowing the external voltage to operate an external device. Pins 1 and 2 provide the PASS signal. Pins 3 and 4 provide the FAIL signal. Pins 5 and 6 provide the PROCESSING signal.
  • Page 71 OPERATION DO NOT CONNECT VOLTAGE OR CURRENT TO THE SIGNAL CAUTION INPUTS, THIS COULD RESULT IN DAMAGE TO THE CONTROL CIRCUITRY. MEMORY ONE - Momentarily connecting terminal 7 to 8 signals the instrument to immediately begin the test program that is stored in memory one. MEMORY TWO - Momentarily connecting terminal 7 to 9 signals the instrument to immediately begin the test program that is stored in memory two.
  • Page 72 OPERATION failure. If continuity is present, high voltage is applied to both conductors of the line cord to insure that all current carrying conductors in the primary circuit are tested. When testing products with two prong plugs, do not activate the continuity circuit. When the Ground Bond test is selected on the QUADCHEK II the High Current will be applied through the Current lead to the Adapter box and flow back through the Return lead.
  • Page 73 OPERATION 8. Bus Remote Interface GPIB / RS-232 This section provides information on the proper use and configuration of the GPIB and RS-232 interfaces. The GPIB (IEEE-488) remote interface is standard on model 7500DT and 7504SA. The RS-232 interface can be substituted for the GPIB interface.
  • Page 74 OPERATION This guarantees that message bytes on the data lines are sent and received without transmission error. NRFD (not ready for data) indicates when a device is ready or not ready to receive a message byte. NDAC (not data accepted) indicates when a device has or has not accepted a message byte.
  • Page 75 OPERATION No more than 15 device loads connected to each bus, with no less than two-thirds powered on. Note: A bus extender which is available from numerous manufacturers is available to overcome these limitations. 8.6 Interface Functions The capability of a device connected to the bus is specified by its interface functions. These functions provide the means for a device to receive, process, and send messages over the bus.
  • Page 76 OPERATION The RS232 cabling should be configured as follows for a 9 pin serial port interface: Instrument RS-232 Port PC / Bus Controller The COM port should have the following configuration. 9600 baud, 8 data bits, 1 stop bit, no parity. This interface does not support XON/XOFF protocol or any hardware handshaking.
  • Page 77 OPERATION 8.9 Interface Bus Command List The following commands are used to toggle ON/OFF functions or menu selection items. No other values or parameters are needed to execute these commands. However when using commands that are usable for a certain function only (function specific), the appropriate function select command FC, FD, FE, or FF must be executed first, to access the parameter for that function.
  • Page 78 OPERATION The following commands will set test parameters on the instrument that require numeric or alphanumeric input. To execute these commands, the appropriate function must first be selected with the above Function Select command FC, FD, FE, or FF, to have access to the parameter menu. Command Parameter Value...
  • Page 79 OPERATION GND (7504SA only) Command Parameter Value Unit Current 3.00 - 30.00 Volt 3.00 - 8.00 HI-Limit 0 - 600 LO-Limit 0 - 600 Dwell Time 0.5 - 999.9 Scanner 1 - 16 Channel Offset 0 - 200 General Operation Command Function Value...
  • Page 80 OPERATION The following functions will read data from the instrument when executed. For every command written, a corresponding read command of the appropriate byte length (shown below) must be executed to retrieve the data from the instrument. Command Read Data Read Bytes Description Function...
  • Page 81 OPERATION The appropriate SRQ bit will be active, or 1 when the SRQ function has been enabled and the condition is true. Bit 6 is the RQS bit and will be active when the instrument has detected that an enabled SRQ event has occurred and therefore has requested service.
  • Page 82 OPERATION changes to this location is unlimited and will not effect the life of the internal non- volatile memory chip. FOR MORE INFORMATION ON IEEE (GPIB) PLEASE CONTACT: The Institute of Electrical and Electronic Engineers, Inc. 345 East 47th Street, New York, NY 10017 ( 1-212-705-7018 (Communications Society of IEEE) Internet: www.ieee.org...

  • Page 83: Options

    OPTIONS Model 7500DT, and 7504SA OPTIONS Introduction This section contains a list and descriptions of available factory installed options at the time of this printing. Option Label If your instrument has been modified with options, there will be an option label on the rear panel of the unit.
  • Page 84 OPTIONS Description 03 High Resolution IR Megohm meter This option will allow for lower resistance readings than the standard instrument. The reading resolution is improved to 0.1KW from the previous 1MW. The minimum reading is 50KW and maximum is reduced to 99.99MW. The other specifications in other modes remain the same.
  • Page 85 OPTIONS 05 RS232 Interface This option may be substituted for the standard GPIB interface. This option provides all of the function control of the GPIB interface with the exception of the SRQ functions. All commands can be found in the GPIB portion of the Operation section of this manual.
  • Page 86 OPTIONS 11 Remote Interlock Option 07 is a Remote Interlock feature that inverts the present reset logic on the instrument from normally opened (must close contacts to activate the reset) to normally closed (must open contacts to activate the reset). Hardware and software have been reconfigured to provide the interlock connections on pins 4 and 5 of the Remote Interface, Signal Input port.
  • Page 87 OPTIONS Displayed messages for Enhanced AC Ramping At the beginning of AC Withstand Voltage test when the voltage begins to ramp but before the meter readings are taken, the display will show: ACW Ramp-up XXX.X s MXX-X - . - - KV - - . - - mA During the AC Withstand Voltage test Ramp-up, the display will show the values being updated in real time as follows: ACW Ramp-up...
  • Page 88 OPTIONS Use the Numeric keys to enter the Ramp Up time setting, then press the ENTER key. The program will store the Ramp Up Time setting and advance to the Dwell Time parameter automatically. The unit is second and 0.1 second per step. Dwell Time= XXX.X s Range : 0.3 - 999.9...
  • Page 89 OPTIONS DCW Dwell XXX.X s - - - - mA MXX-X - . - - KV At the end of the dwell cycle when the voltage begins to ramp down, the display will show the values being updated in real time as follows: DCW Ramp-down XXX.X s MXX-X X.XX KV XXXX mA...
  • Page 90 OPTIONS Displayed messages for Enhanced IR Ramping At the beginning of an Insulation Resistance test when the voltage begins to ramp but before the meter readings are taken, the display will show: IR Ramp-up XXX.X s MXX-X XXXX V - - - - MW NOTE: The Insulation Resistance display reading will remain blank until the minimum Insulation Resistance Voltage has been reached.
  • Page 91 OPTIONS This page is intentionally left blank...

  • Page 92: Section Ii Service Manual

    SECTION 2 SERVICE MANUAL...

  • Page 93: Calibration

    CALIBRATION CALIBRATION PROCEDURES To enter the Calibration Mode Press the 0 and 1 keys simultaneously and then turn the input power switch on. The program will automatically enter to the calibration mode and the display screen will show: Calibration Mode Ú...
  • Page 94 CALIBRATION 3. AC Hipot, Voltage Press the Ú key, the program will advance to the AC Voltage calibration of the hipot test. The display will show: ACW Voltage,5000V <T E S T> t o C a l i b r a t e Connect an AC standard voltage meter which can measure up to 5000V to the output connectors and then press the TEST button, the program will automatically generate an output of about 5000VAC and the display will show:...
  • Page 95 CALIBRATION 5. IR test, DC Voltage Press the Ú key, the program will advance to the DC Voltage calibration of the IR test. The display will show: IR Voltage, 1000V <T E S T> t o C a l i b r a t e Connect a DC standard voltage meter which can measure up to 1000V to the output connectors and then press the TEST button, the program will automatically generate an output of about 1000VDC and the display will show:...
  • Page 96 CALIBRATION 7. DC Hipot, 10mA current range Press the Ú key, the program will advance to the DC 10mA range calibration of the hipot test. The display will show: DC 10mA, 100KW <T E S T> t o C a l i b r a t e Connect a resistor about 100KW/10W in series with a DC standard Ammeter which can measure up to 10mA to the output leads.
  • Page 97 CALIBRATION 9. DC Hipot, 3500mA current range Press the Ú key, the program will advance to the DC 3500mA range calibration of hipot test. The display will show: DC 3500mA, 100KW <T E S T> t o C a l i b r a t e Connect a resistor about 100KW/10W in series with a DC standard Ammeter which can measure up to 3000mA to the output leads.
  • Page 98 CALIBRATION 11. IR test, XXX.XMW range Press the Ú key, the program will advance to the XXX.XMW range calibration of the IR test. The display will show: XXX.XMW,STD 50MW <T E S T> t o C a l i b r a t e Connect a 50MW/0.25W/1000VDC standard resistor to the output connectors, then press the TEST button, the program will automatically calibrate the XXX.X MW range of IR test and the display will show:...
  • Page 99 CALIBRATION the ENTER key to store the standard value of AC Ground Bond voltage and display will show: Ground V, 7V <T E S T> t o C a l i b r a t e 14. Ground Bond, AC Current (Model 7504SA only) Press the Ú...
  • Page 100 CALIBRATION Use the Numeric keys to enter the standard value of current, unit mA, and then press the ENTER key to store the standard value of AC Real current and display will show: AC 5mAR, 500K <T E S T> t o C a l i b r a t e...

  • Page 101: Parts List

    PARTS LIST Replacement Parts List Model 7500DT, 7504SA Rev. D 2/15/2002 ECO 4869 Part Qty. Reference Description Number Designator Model 7500DT, 7504SA 38313 7440 Main Control Board 38314 CHV-06 HV Control Board 37998 AMP-H500 Power Amplifier Board 37742 CKB-03 Keypad Board 37994 CSW-05 Input Protection Board...

  • Page 102: Schematics

    SCHEMATICS SCHEMATIC INDEX Drawing Description Reference Pages Number Designator S07500DT Wiring Diagram 7500DT S07504SA Wiring Diagram 7504SA S38123 Main Control Board 7440 S37989 HV Control Board CHV-06 S37998 Power Amplifier Board AMP-H500 S37995 Rectifier Board REC-H15 S37742 Keypad Board CKB-03 S37994 Input Protection Board CSW-05...

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Hypotultra ii 7500dt

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