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Picotest M3500A Service Manual

6.5 digit digital multimeter
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®
PICOTEST
M3500A
6.5 Digit Digital Multimeter

Service Manual

Printed date: 11/2011

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Summary of Contents for Picotest M3500A

  • Page 1: Service Manual

    ® PICOTEST M3500A 6.5 Digit Digital Multimeter Service Manual Printed date: 11/2011...

  • Page 2: Table Of Contents

    Table of Contents GENERAL INFORMATION ..................4 ARRANTY NFORMATION ................4 IMITATION OF ARRANTY ................5 RECAUTION OF PERATION ................5 M3500A ................6 AINTENANCE OF AFETY NFORMATION ..................6 YMBOLS AND ERMS ..................7 GENERAL MAINTENANCE ..................8 ETTING OLTAGE AND EPLACING ..........
  • Page 3 4.5.3 Main Board Assembly..............54 4.5.4 Chassis Assembly ................56 4.5.5 GPIB Assembly .................. 58 REPLACEABLE PARTS ..................... 61 NTRODUCTION ....................61 ARTS ..................... 61 AYOUT RAWINGS ..................82 SIMPLE CALIBRATION PROCEDURES ..............85 ALIBRATION ECURITY ............... 85 DJUSTMENT ................. 85 DCV, DCI, 4W &...

  • Page 4: General Information

    Remarks:  No other warranty is expressed or implied, except for the above mentioned. The remedies provided herein are the buyer’s sole and exclusive remedies. PICOTEST shall not be liable for any direct, indirect, special, incidental or consequential damages.

  • Page 5: Limitation Of Warranty

     The rear protective conduct terminal needs to be connected to the actual earth ground or electric shock may occur.  The patent and related documents for the equipment belong to PICOTEST CORP. and they aren’t allowed to be used by others without permission.

  • Page 6: Maintenance Of M3500A

     If the incorrect display or abnormal beeps occurred you should stop using the equipment at once.  Do not use the Meter around explosive gas or inflammable vapor.  Wipe the surface of M3500A multimeter with a piece of dry and clean cloth. 1.5 Safety Information Warning! Please read through the following safety information before using the product.

  • Page 7: Symbols And Terms

     Do not try to operate the Meter if it is damaged. Disconnect the power from the equipment and consult the local service representative. Return the product to PICOTEST service department if necessary. 1.6 Symbols and Terms This symbol indicates hazards that may cause damages to the instrument or even result in personal injury.

  • Page 8: General Maintenance

    General Maintenance 2.1 Setting Line Voltage and Replacing Fuse Before turning on the multimeter, you should check the Line voltage setting and the power-line fuse. If the line voltage setting is not properly, correct it. If the power–line fuse is not good, replace a new one in the same type. The following sections will show you how to do.
  • Page 9 [Step2] Turn off the power and disconnect the line cord from your multimeter as shown in Figure 2-1. Also, you should remove all the leads connected to it. Window Figure 2-1 [Step 3] Open the cap and remove the voltage setting selector from the right middle seam as shown in Figure 2-2.
  • Page 10 [Step 4] Turn the voltage selector over, the value you want to set must in the right side. Figure 2-3 [Step 5] Insert the voltage setting selector back into the socket and close the cap as shown in Figure 2-4. Check the setting from the window again. Figure 2-4 NOTE: Before re-connecting the power line cord to your multimeter, make sure that power switch is in the “POWER OFF”...

  • Page 11: Transformer

    2.1.1. If the voltages shown in the selector do not fit your requirement, you may change the transformer connections to change the line voltage setting selections. The voltages can be set for M3500A are 100, 120, 220, 240 Vac.
  • Page 12 [Step 3] There are four wires in different colors on the transformer. Two of them connect to the power entry according to the regular line voltage selections for your country as shown in Figure 2-8. Power Entry Transformer Figure 2-8 [Step 4] Please refer to the Table 2-1 to connect the wires for your need.

  • Page 13: Power Line Fuse

    2.1.1 to set the desired line voltage. NOTE: After transformer wiring modification, you should change the sticker on voltage setting selector also. PICOTEST will provide the stickers for free. Please contract your local service representative for the stickers for your requirement.
  • Page 14 [Step 2] Open the cap and remove the voltage setting selector from the right middle seam as shown in Figure 2-10. (You might need a flat-blade screwdriver to do so.) Figure 2-10 Warning! For continued protection against fire or instrument damage, only replace fuse with the same type and rating.

  • Page 15: Current Input Fuse - 3.15 A

    There are two fuses located in the front and rear current input terminals to protect your multimeter against damage of strong current pulse. The front and rear current input fuses used in M3500A are the type 3.15A, 250 V, 5 ×...
  • Page 16 [Step 1] Turn off the multimeter and disconnect the power line cord as shown in Figure 2-13. Also, you should remove all the test leads that connected to your instrument. Figure 2-13 [Step 2] Push the current input terminal and turn it right as shown in Figure 2-14 . Figure 2-14 [Step 3] Pull out the terminal (fuse holder) gently and you will find the current input...
  • Page 17 fuse as shown in Figure 2-15. Current input Fuse Figure 2-15 [Step 4] Remove the broken fuse and replace a new one with the same type or same rating as shown in Figure 2-16. Fuse Current Fuse Holder Figure 2-16 [Step 5] Insert the fuse holder back and turn it left as shown in Figure 2-17.

  • Page 18: Current Input Fuse - 7 A

    The current input Fuse provides an additional level of current protection (The diagram in the below Figure 2-18 would let you know the function more clearly). The fuse in M3500A is the type 7A, 5 x 20 mm, fast acting and Ceramic Tube (Picotest part number: 024-001-000006, the reference number: FS103).
  • Page 19 Figure 2-18 [Step 1] Turn off the multimeter and disconnect the power line cord as shown in Figure 2-19. Also, you should remove all the test leads that connected to your instrument. Figure 2-19 [Step 2] Please use a flat-blade screwdriver with a suitable pushing strength to turn it left for releasing the holder.
  • Page 20 Figure2-20 [Step 3] Pull out the terminal (fuse holder) gently and you will find the current input fuse as shown in Figure 2-21. Current input Fuse Figure 2-21 [Step 4] Remove the broken fuse and replace a new one with the same type or same rating as shown in Figure 2-22.

  • Page 21: Pass/Fail Output From Usb Connector

    Figure 2-23 2.3 Pass/Fail Output From USB Connector The USB connector on the rear panel of M3500A is a series “B” connector. When the USB interface is disabled (IEEE-488 interface is selected), the internal pass and fail TTL output signals (limit testing) will be connected to the USB connector.

  • Page 22: Mcus & Dsp Firmware Upgrade

    Please disconnect the USB cable from you multimeter. The signal from the USB cable may make the Pass/Fail signal output abnormal. 2.4 MCUs & DSP Firmware Upgrade M3500A has three microprocessors, DSP processor, Panel processor, and Front-end processor, for various internal systems. PICOTEST allows users to...
  • Page 23 Firmware updating will support more stability or functions for your multimeter. To upgrade your M3500A, please follow the steps below. [Step 1] Link to PICOTEST homepage: http://www.picotest.com.tw/ by your browser. Click the banner “Support” and login to enter the support page. If you are visit the site first time, please register for more service.
  • Page 24 [Step 3] Connect your M3500A to PC via USB cable. Execute DmmUpdate.exe, and a window as Figure 2-26a will show. Click the “Update” button and choose the firmware file that you want to update, for example DATA_X1_10A.bin, as shown in Figure 2-26b and open it.
  • Page 25 Figure 2-27 [Step 5] Click “Update” bottom again after you restart your multimeter for installing the other firmware, or click “Exit” to exit the program and complete whole installation. [Step 6] To confirm the updating is successful, follow the procedure below to check the system version.

  • Page 26: Troubleshooting

    M3500A. Repairs will require various degrees of disassembly. Please refer to the  section 4 of this manual for detail disassembly instructions of M3500A. It is recommended performing self-test procedure prior to any disassembly. Do not make repairs to the PC-board unless you are equipped and/or ...
  • Page 27 PC-board if you are not equipped or qualified. There are many CMOS devices installed in M3500A. CMOS devices are  static sensitive and can be destroyed by electrostatic discharge during handling.

  • Page 28: System Function Blocks

    Both front and rear terminal have a fused current input terminal (Input-I) to protect against potential catastrophic damage caused by accidental input connection. The current input fuses used in M3500A is the type 3.15A, 250 × V, 5 20 mm, fast acting, ceramic tube with a high breaking character (Picotest part number: 024-001-000008, the reference number: FS101).

  • Page 29: Panel Module

    3.3 Panel Module The panel module consists of VFD control, keypad scanning, and beeper control. Figure 3-2 shows the block diagram of the panel module of M3500A. Beeper (Vacuum Fluorescent Display) Data Lines Keypad Panel Main board Scan Lines Module...

  • Page 30: Main Board Module

    VFD operating properly. 3.4 Main Board Module The main board module of M3500A consists of power supply circuit, analog front-end circuit, ADC and MCU, and main control circuit. The block diagram is shown in Figure 3-3.

  • Page 31: Power Supply Circuitry

    As shown in Figure 3-4, AC power is applied through the line voltage selector to power transformer. There are four selections of line voltage (240, 220, 120, and 100 Vac) can be applied to M3500A. You must choose a correct line voltage for your multimeter according to your local power utility voltage or damage may occur.

  • Page 32: Analog Front-End Circuitry

    The purpose of the analog front-end circuit is to converter the input signals from the front or rear terminal to ADC (analog-to-digital converter) input. The block diagram of the analog front-end circuit of M3500A is shown in Figure 3-5. OHMS Current...

  • Page 33: Adc & Mcu

    2 VDC for a full scale AC input. 3.4.3 ADC & MCU Figure 3-6 shows the block diagram of the A-to-D convert circuit of M3500A. Voltage Reference &...

  • Page 34: Main Control Circuitry

    The analog-to-digital converter (ADC) is used to change dc voltage into digital information. The digital signals are then sent to the main controller on the main board module through opto-couplers to calculate readings. The voltage reference circuit is used to provide precision voltage reference for the multimeter.

  • Page 35: Self-Test

    10 MHz crystal. 3.5 Self-test Self-test procedures are built in M3500A for checking that the logic and measurement hardware are functioning properly. Every time when the multimeter is powered on, a set of test procedures is performed to make sure the basic function of the multimeter works properly.
  • Page 36 After self-test procedure, the result, PASS or FAIL, will be shown. If the result is FAIL, the “ERR” annunciator on the display panel will be lit, and error codes will be stored. You can check the error codes by the following procedure.
  • Page 37 × 609 DC gain x1 failed This procedure is to test the tolerance of DC gain ± amplifier. The limit of gain tolerance is 0.005. 610 DC gain x10 failed This procedure is to test the tolerance of DC × ±...
  • Page 38 617 Ohms 100 uA source failed This test configures to the 1000V dc range with the internal 10M 100:1 divider R204 connected across the input. µ The 100 A ohms current source is connected. The compliance limit of the current source is measured. A 20ms ADC measurement is performed and ±...

  • Page 39: Disassembly & Re-Assembly

    Disassembly & Re-assembly 4.1 Introduction This section explains how to disassemble and reassemble the M3500A multimeter. This section provides the procedure to assist in case cover removal, main board removal, and front panel disassembly. Also, there are mechanical drawings in this section to assist in the disassembly and re-assembly of the M3500A.
  • Page 40 [Step 1] Turn the handle up to 90° with the multimeter, and pull it out as shown in Figure 4-1. Figure 4-1 [Step 2] Pull the front mounting ear out as shown in Figure 4-2. Figure 4-2 NOTE: When re-installing the front mounting ear, make sure the ear is in the correct direction.
  • Page 41 [Step 3] Remove the six fastening screws securing the rear bezel on the chassis as Figure 4-3 shown. Pull the bezel and the rear mounting ear out together. Figure 4-3 [Step 4] Remove one screw that secures the metal cover on the chassis. The screw is on the bottom as shown in Figure 4-4.

  • Page 42: Main Board Removal

    [Step 5] Slide the metal cover out of the chassis as shown in Figure 4-5 and complete the cover removal. Figure 4-5 4.3 Main Board Removal Follow the steps below to remove the main board. Of course, you must complete the metal cover removal first. [Step 1] Remove the scanner card and GPIB card.
  • Page 43 Figure 4-6 Loose the screw that secures the GPIB card on the plastic cylinder, and  remove the GPIB card carefully. Figure 4-7 Disconnect the cable from GPIB card to the connector J1605 on the  main board.
  • Page 44 [Step 2] Remove the rear panel module. Disconnect the three connectors from the transformer to power entry as  shown in Figure 4-8. Figure 4-8 Warning! Make sure the connection is correct when you re-connect the connectors between the transformer and power entry. An incorrect connection will make the power supplied to the multimeter improperly and cause damage to your instrument.
  • Page 45 Figure 4-9 Remove the six screws as shown in Figure 4-10.  Grounding cord fastening screw Grounding cord fastening screw Figure 4-10 Warning! Two grounding cords that connect between the rear panel and the left and right chassis are fastened by the screws pointed by blue arrows in Figure 4-10.
  • Page 46 Remove the fastener of the rear terminal set as shown in Figure 4-11,  and pull the rear panel out from the chassis. Remove the fastener of the front terminal set by the same way. Terminal set fastener Figure 4-11 [Step 3] Remove the transformer.
  • Page 47 [Step 4] To remove the front/rear switch rod, place the edge of a flat-blade screwdriver in the notch on the pushrod, and twist the driver gently while pulling the rod from the shaft as shown in Figure 4-13. Figure 4-13 [Step 5] Unplug the ribbon cable from the display panel to the connector J1604, and then remove the screw that secure the main board on the chassis as shown...

  • Page 48: Front Panel Disassembly

    [Step 6] Pull the main board gently to make the fixed points leaving their positions. Raise the board a little bit and then pull it out carefully as Figure 4-15. Fixed point Fixed point Figure 4-15 NOTE: When you want to re-install the main board, please reverse the steps shown above.
  • Page 49 Heat conducting header Figure 4-16 [Step 2] Remove the fasteners of the right/left chassis as shown in Figure 4-17, and then remove the chassis. Figure 4-17...
  • Page 50 [Step 3] Remove the two fastening screws that secure the front panel PCB board as Figure 4-18. Slide the front panel board to the right carefully to leave the fixed points, and then remove the front panel board Fix Points Fix Points Figure 4-18 [Step 4]...

  • Page 51: Assembly Drawings

    4.5 Assembly Drawings The mechanical drawings provided in this section will help you to disassemble and re-assemble the M3500A multimeter quickly. Section 4.5.1 shows the front panel assembly, section 4.5.2 shows the chassis and transformer assembly, section 4.5.3 is the main board assembly, and...

  • Page 52: Front Panel Assembly

    4.5.1 Front Panel Assembly...

  • Page 53: Chassis And Transformer Assembly

    4.5.2 Chassis and Transformer Assembly...

  • Page 54: Main Board Assembly

    4.5.3 Main Board Assembly...

  • Page 56: Chassis Assembly

    4.5.4 Chassis Assembly...

  • Page 58: Gpib Assembly

    4.5.5 GPIB Assembly Before assembling the GPIB, operators have to disassemble the M3500A’s case cover. For more information about case cover removal, please refer to the Section 4.2 Case Cover Removal. Then the GPIB assembly in the following just can proceed.
  • Page 59 [Step 3] [Step 4] Remove the GPIB OPTION cover. Connect the GPIB cord to the socket of the main board. [Step 6] [Step 5] Fasten the card with a screw by a screwdriver. Adjust the card to a proper position.
  • Page 60 [Step 8] [Step 7] Do it again on the other side. Fasten the terminal by hand’s assistance. [Step 10] [Step 9] Do it again on the other side. And finished! Fasten the terminal by tool’s assistance.

  • Page 61: Replaceable Parts

    PCB and panel PCB are shown in section 5.3. Table 5-1 lists the components of M3500A main board, and the components used in panel board of M3500A are listed in Table 5-2. Figure 5-1 and Figure 5-2 show the components layout of main board of M3500A. Figure 5-1 shows the top layer, and Figure 5-2 is bottom layer.
  • Page 62 056-001-000003 100nF-0603 X7R,50V,10% C1301 056-001-000003 100nF-0603 X7R,50V,10% C1302 056-001-000003 100nF-0603 X7R,50V,10% C1303 056-001-000003 100nF-0603 X7R,50V,10% C1304 056-001-000003 100nF-0603 X7R,50V,10% C1305 056-001-000003 100nF-0603 X7R,50V,10% C1306 056-001-000003 100nF-0603 X7R,50V,10% C1307 056-001-000003 100nF-0603 X7R,50V,10% C1308 056-001-000003 100nF-0603 X7R,50V,10% C1313 056-001-000003 100nF-0603 X7R,50V,10% C1401 056-001-000003 100nF-0603 X7R,50V,10% C1402...
  • Page 63 056-001-000003 100nF-0603 X7R,50V,10% C1905 056-001-000003 100nF-0603 X7R,50V,10% C2001 056-001-000003 100nF-0603 X7R,50V,10% C201 056-001-000003 100nF-0603 X7R,50V,10% C202 056-001-000003 100nF-0603 X7R,50V,10% C2101 056-001-000003 100nF-0603 X7R,50V,10% C2207 056-001-000003 100nF-0603 X7R,50V,10% C2208 056-001-000003 100nF-0603 X7R,50V,10% C2219 056-001-000003 100nF-0603 X7R,50V,10% C2220 056-001-000003 100nF-0603 X7R,50V,10% C2226 056-001-000003 100nF-0603 X7R,50V,10% C2229...
  • Page 64 056-001-000003 100nF-0603 X7R,50V,10% C603 056-001-000003 100nF-0603 X7R,50V,10% C604 056-001-000003 100nF-0603 X7R,50V,10% C605 056-001-000003 100nF-0603 X7R,50V,10% C606 056-001-000003 100nF-0603 X7R,50V,10% C607 056-001-000003 100nF-0603 X7R,50V,10% C608 056-001-000003 100nF-0603 X7R,50V,10% C609 056-001-000003 100nF-0603 X7R,50V,10% C610 056-001-000003 100nF-0603 X7R,50V,10% C611 056-001-000003 100nF-0603 X7R,50V,10% C620 056-001-000003 100nF-0603 X7R,50V,10% C621...
  • Page 65 056-001-00000F 1.8nF-0603 X7R,50V,10% C624 056-001-00000H 100pF-0603 NPO,50V,5% C1310 056-001-00000H 100pF-0603 NPO,50V,5% C1623 056-001-00000H 100pF-0603 NPO,50V,5% C1624 056-001-00000H 100pF-0603 NPO,50V,5% C1625 056-001-00000H 100pF-0603 NPO,50V,5% C1626 056-001-00000H 100pF-0603 NPO,50V,5% C1627 056-001-00000H 100pF-0603 NPO,50V,5% C1628 056-001-00000H 100pF-0603 NPO,50V,5% C1629 056-001-00000H 100pF-0603 NPO,50V,5% C1630 056-001-00000H 100pF-0603 NPO,50V,5% C1631...
  • Page 66 056-001-00000K 10pF-0603 NPO,50V,5% C1503 056-001-00000K 10pF-0603 NPO,50V,5% C1505 056-001-00000K 10pF-0603 NPO,50V,5% C1507 056-001-00000K 10pF-0603 NPO,50V,5% C1509 056-001-00000K 10pF-0603 NPO,50V,5% C1511 056-001-00000K 10pF-0603 NPO,50V,5% C638 056-001-00000M 33pF-0603 NPO,50V,5% C1105 056-001-00000M 33pF-0603 NPO,50V,5% C1619 056-001-00000M 33pF-0603 NPO,50V,5% C1620 056-001-00000M 33pF-0603 NPO,50V,5% C627 056-001-00000N 10uF-0805 X5R,10V,10% C1512...
  • Page 67 056-001-000016 1uF-0603 25V/X5R/10% C1309 056-001-000016 1uF-0603 25V/X5R/10% C801 056-001-000016 1uF-0603 25V/X5R/10% C802 056-003-000001 1.8pF-1206 1000V C615 056-019-000001 TF811 U701 056-019-000002 TF812 U403 056-032-000002 10uF 10V,A-CASE C2204 056-032-000002 10uF 10V,A-CASE C2225 056-032-000002 10uF 10V,A-CASE C2228 056-032-000002 10uF 10V,A-CASE C2234 057-001-000001 GSNL453232-102K L301 057-001-000001 GSNL453232-102K...
  • Page 68 057-018-000001 PESD5V0S1BA D2104 057-018-000001 PESD5V0S1BA D2105 057-018-000001 PESD5V0S1BA D2214 057-018-000001 PESD5V0S1BA D2215 060-002-000001 24K-2512 tolerance:1%,1W R101 060-002-000001 24K-2512 tolerance:1%,1W R102 060-002-000001 24K-2512 tolerance:1%,1W R103 060-002-000001 24K-2512 tolerance:1%,1W R104 060-002-000001 24K-2512 tolerance:1%,1W R105 060-002-000001 24K-2512 tolerance:1%,1W R106 060-002-000001 24K-2512 tolerance:1%,1W R107 060-002-000001 24K-2512 tolerance:1%,1W R110...
  • Page 69 060-002-000006 1K-0603 tolerance:1%,1/10W R1502 060-002-000006 1K-0603 tolerance:1%,1/10W R1503 060-002-000006 1K-0603 tolerance:1%,1/10W R1504 060-002-000006 1K-0603 tolerance:1%,1/10W R1505 060-002-000006 1K-0603 tolerance:1%,1/10W R1506 060-002-000006 1K-0603 tolerance:1%,1/10W R1619 060-002-000006 1K-0603 tolerance:1%,1/10W R1905 060-002-000006 1K-0603 tolerance:1%,1/10W R201 060-002-000006 1K-0603 tolerance:1%,1/10W R2011 060-002-000006 1K-0603 tolerance:1%,1/10W R2216 060-002-000006 1K-0603 tolerance:1%,1/10W R305...
  • Page 70 060-002-00000G 4.75K-0603 tolerance:1%,1/10W R1203 060-002-00000G 4.75K-0603 tolerance:1%,1/10W R1204 060-002-00000G 4.75K-0603 tolerance:1%,1/10W R1205 060-002-00000G 4.75K-0603 tolerance:1%,1/10W R1303 060-002-00000G 4.75K-0603 tolerance:1%,1/10W R1601 060-002-00000G 4.75K-0603 tolerance:1%,1/10W R1604 060-002-00000G 4.75K-0603 tolerance:1%,1/10W R1606 060-002-00000G 4.75K-0603 tolerance:1%,1/10W R1607 060-002-00000G 4.75K-0603 tolerance:1%,1/10W R1608 060-002-00000G 4.75K-0603 tolerance:1%,1/10W R1609 060-002-00000G 4.75K-0603 tolerance:1%,1/10W R1611...
  • Page 71 060-002-00000L 100R-0603 tolerance:1%,1/10W R530 060-002-00000L 100R-0603 tolerance:1%,1/10W R902 060-002-00000L 100R-0603 tolerance:1%,1/10W R905 060-002-00000M 4.87K-0603 tolerance:1%,1/10W R1107 060-002-00000M 4.87K-0603 tolerance:1%,1/10W R518 060-002-00000M 4.87K-0603 tolerance:1%,1/10W R519 060-002-00000O 75K-0603 tolerance:1%,1/10W R1003 060-002-00000O 75K-0603 tolerance:1%,1/10W R604 060-002-00000P 21.5K-0603 tolerance:1%,1/10W R1001 060-002-00000P 21.5K-0603 tolerance:1%,1/10W R1904 060-002-00000P 21.5K-0603 tolerance:1%,1/10W R607...
  • Page 72 060-002-00001L 47.5K-0603 tolerance:1%,1/10W R2001 060-002-00001L 47.5K-0603 tolerance:1%,1/10W R2002 060-002-00001M 100R-1206 tolerance:1%,1/4W R1902 060-002-00001M 100R-1206 tolerance:1%,1/4W R2109 060-002-00001M 100R-1206 tolerance:1%,1/4W R2110 060-002-00001O 1K-1206 tolerance:1%,1/4W R1906 060-002-00001P 22.1K-0603 tolerance:1%,1/10W R2003 060-002-00001P 22.1K-0603 tolerance:1%,1/10W R2004 060-002-00001Q 165R-0603 tolerance:1%,1/10W R2007 060-002-00001Q 165R-0603 tolerance:1%,1/10W R2008 060-002-00001R 18R-0603 tolerance:1%,1/10W R2102...
  • Page 73 060-002-00006Q 4.64K-0603 tolerance:1%,1/10W R622 060-002-00006W 5.62K-0603 tolerance:1%,1/10W R1102 060-002-000070 6.65K-0603 tolerance:1%,1/10W R2209 060-002-000076 7.87K-0603 tolerance:1%,1/10W R603 060-002-00007C 9.53K-0603 tolerance:1%,1/10W R1006 060-002-00007C 9.53K-0603 tolerance:1%,1/10W R1007 060-002-000088 24.3K-0603 tolerance:1%,1/10W R617 060-002-00008D 27.4K-0603 tolerance:1%,1/10W R2217 060-002-00008G 29.4K-0603 tolerance:1%,1/10W R2210 060-002-00008G 29.4K-0603 tolerance:1%,1/10W R2212 060-002-00008H 30.1K-0603 tolerance:1%,1/10W R2010...
  • Page 74 061-001-000005 MMSZ6V8T1 D802 061-001-000006 HSMS-2822 D1301 061-001-000007 MMSZ5226BT1 D601 061-001-000007 MMSZ5226BT1 D602 061-001-000007 MMSZ5226BT1 D603 061-001-000007 MMSZ5226BT1 D604 061-001-000007 MMSZ5226BT1 VR306 061-001-000007 MMSZ5226BT1 VR307 061-001-000008 CMPD7000 D1901 061-001-000008 CMPD7000 D1902 061-001-000008 CMPD7000 D1903 061-001-000008 CMPD7000 D2101 061-001-000008 CMPD7000 D2102 061-001-000009 SMAJ36CA D2203 061-001-000009...
  • Page 75 061-003-000001 MMBF4393LT1 Q510 061-003-000001 MMBF4393LT1 Q511 061-003-000001 MMBF4393LT1 Q512 061-003-000001 MMBF4393LT1 Q513 061-003-000001 MMBF4393LT1 Q514 061-003-000001 MMBF4393LT1 Q515 061-003-000003 SST4117-T1 Q311 061-004-000002 SI2301BDS-T1 Q2201 061-004-000002 SI2301BDS-T1 Q2202 061-004-000003 2N7002E-T1 Q1001 061-004-000003 2N7002E-T1 Q1301 061-004-000003 2N7002E-T1 Q1302 061-004-000003 2N7002E-T1 Q1303 061-004-000003 2N7002E-T1 Q1304 061-004-000003...
  • Page 76 063-001-000003 AD706JR U801 063-001-000004 LM339MX U501 063-001-000004 LM339MX U503 063-001-000004 LM339MX U506 063-001-000005 BA4558 U505 063-001-000006 OP37GS U604 063-001-000007 AD825AR U605 063-001-000008 TLE2081ACD U607 063-001-000009 OPA2277UA U608 063-001-00000A AD711JR U1302 063-001-00000A AD711JR U901 063-001-00000D OP177 U1301 063-001-00000E OP27GS U1303 063-001-00000F LM311MX U1304 063-001-00000G...
  • Page 77 063-007-00000G SN74LVC07ADBR U1603 063-008-000001 MAX4605CSE U601 063-008-000002 DG408CY U502 063-008-000003 DG212CSE U602 063-008-000004 SD5400CY U803 063-008-000005 DG211CSE U902 063-009-000001 MSP430F1232IPW U2001 063-010-000002 TMS320VC5407PGE U1601 063-011-000001 12MHz SOL52 12.0M 3.3V +/-100PPM Y1201 063-016-000001 MAX4662EAE-T Analog Switch U401 ° 012-001-000006 J1605 CON20P/2.0-black 180 ,male plug,10*2 °...
  • Page 78 056-006-000001 2.2nF/50V tolerance:5% C1314 056-011-000002 470uF/35V size:10*17 C2202 056-011-000002 470uF/35V size:10*17 C2210 056-011-000003 10uF/25V C1106 056-011-000003 10uF/25V C1107 056-011-000003 10uF/25V C2205 056-011-000003 10uF/25V C2218 056-011-000003 10uF/25V C2251 056-011-000003 10uF/25V C2254 056-011-000003 10uF/25V C630 056-011-000003 10uF/25V C631 056-011-000003 10uF/25V C632 056-011-000003 10uF/25V C633 056-011-000005...
  • Page 79 LM1117T-5V U2207 063-004-00000C LM1117T-3.3V U2205 063-011-000002 10MHz Y1601 063-011-000003 6MHz Y2101 Table 5-1 Parts list of M3500A panel board Picotest Part NO. Description Circuit Design 056-001-000003 100nF-0603 X7R,50V,10% 056-001-000003 100nF-0603 X7R,50V,10% 056-001-000003 100nF-0603 X7R,50V,10% 056-001-000003 100nF-0603 X7R,50V,10% 056-001-000003 100nF-0603 X7R,50V,10%...
  • Page 80 056-001-00000L 1nF-0603 X7R,50V,tolerance:10% 056-001-00000Q 100nF-0805 X7R,50V,10% 056-001-00000S 33nF-0603 X7R,16V,10% 056-001-00000T 20pF-0603 NPO,50V,5% 056-001-00000T 20pF-0603 NPO,50V,5% 057-009-000002 BLM18BD601SN1D 0603 057-009-000002 BLM18BD601SN1D 0603 060-002-000003 10K-0603 tolerance:1%,1/10W 060-002-000003 10K-0603 tolerance:1%,1/10W 060-002-000003 10K-0603 tolerance:1%,1/10W 060-002-000003 10K-0603 tolerance:1%,1/10W 060-002-000003 10K-0603 tolerance:1%,1/10W 060-002-000003 10K-0603 tolerance:1%,1/10W 060-002-000003 10K-0603 tolerance:1%,1/10W 060-002-000003 10K-0603 tolerance:1%,1/10W...
  • Page 81 060-002-00002P 220K-0603 tolerance:1%,1/10W 060-002-00002Q 1M-0603 tolerance:1%,1/10W 060-002-00002S 22R-0603 tolerance:1%,1/10W 060-002-00006B 3.01K-0603 tolerance:1%,1/10W 060-002-00006B 3.01K-0603 tolerance:1%,1/10W 060-002-00006B 3.01K-0603 tolerance:1%,1/10W 060-002-00006B 3.01K-0603 tolerance:1%,1/10W 060-002-00006B 3.01K-0603 tolerance:1%,1/10W 060-002-00006B 3.01K-0603 tolerance:1%,1/10W 060-002-00006B 3.01K-0603 tolerance:1%,1/10W 060-002-00006B 3.01K-0603 tolerance:1%,1/10W 061-001-00000A SMAJ14CA 061-001-00000A SMAJ14CA 061-001-00000B SMBJ70CA 061-001-00000F MMSZ39T1 061-007-000008 BC856ALT1...

  • Page 82: Layout Drawings

    5.3 Layout Drawings Main board PCB components layout (top layer) Figure 5-1...
  • Page 83 Main board PCB components layout (bottom layer) Figure 5-2...
  • Page 84 Panel PCB components layout (top layer) Figure 5-3 Panel PCB components layout (bottom layer) Figure 5-4...

  • Page 85: Simple Calibration Procedures

    Please follow the procedures A, B and C to do the Zero adjustment. A. Use the CALIBRATE SHORT PIN as shown below to plug into the front panel terminals of the M3500A. Then, warm it up in 3 minutes as the M3500A is given power.

  • Page 86: The Gain Adjustment For Dcv, Dci, 4W & Freq

    +0.000000E-1, an Error message will appear (refer to Table-2). C. When it’s done for the Zero Test, the Display of the M3500A will show Cali OK. Users can press ESC to exit. The Gain Adjustment for DCV, DCI, 4W & FREQ Please follow the procedures A, B and C to do the adjustment.

  • Page 87: The Gain Adjustment For Acv

    +0.900000E-01 and +1.100000E-01 at the AC range 100 mV.) > ENTER to do the adjustment. B. When it’s done, the Display of the M3500A will show Cali OK. Users can press ESC to exit. In addition, users have to note that…...

  • Page 88: Calibration Count

    M3500A. Note 2: The factory default for each M3500A is 0. If the count number  exceeds 32767. The number will turn into 0.

  • Page 89: Appendix

    Appendix Specification List DC Characteristics ± ± 24 hours accuracy 1 year accuracy Input Function Range (% of reading+% of (% of reading+% of Resistance ± ± range)(23 range)(23 100.0000 Ω >10 G 0.0030+0.0030 0.0050+0.0035 Ω 1.000000 V >10 G 0.0020+0.0006 0.0040+0.0007 Ω...
  • Page 90 DC Characteristics (continued) ± ± 24 hours accuracy 1 year accuracy Test Function Range (% of reading+% of (% of reading+% of Current ± ± range)(23 range)(23 100.0000 1 mA 0.0030+0.0030 0.010+0.004 Ω 1.000000 1 mA 0.0020+0.0005 0.010+0.001 Ω 10.00000 µ...
  • Page 91 AC Characteristics ± ± 24 hours accuracy 1 year accuracy Frequency Function Range (% of reading+% of (% of reading+% of (Hz) ± ± range)(23 range)(23 3 – 5 1.00+0.03 1.00+0.04 5 – 10 0.35+0.03 0.35+0.04 10 – 20K 0.04+0.03 0.06+0.04 100.0000 20K –...

  • Page 92: General Specifications

    General Specifications item Limitation & description 100V/120V/220V/240V ± 10% Power Supply 50~60 Hz ± 10% Power Line Frequency Power Consumption 25 VA peak (16 W average) 0 ℃ to 40 ℃ Operating Environment Maximum relative humidity 80% for temperature up to 31 ℃ decreasing linearly to 50% relative Operating Humidity humidity at 40℃...
  • Page 93 Power-ON and Reset State Function Default Function Autozero Frequency and Period Source AC Voltage Output Format ASCII Ratio AC Bandwidth Input Frequency 20Hz AC Digits 5 ½ Voltage DC digits Slow 5 ½ (1 PLC) Range Auto AC Digits 5 ½ Current DC Digits Slow 5 ½...
  • Page 94 73/23/EEC and the EMC Directive 2004/108/EC and goes with the CE Marking accordingly. Conformity with the following product standards: Manufacturer Name: Picotest Corp. Manufacturer Address: 5F-1, 286-9, Hsin-Ya Rd, 80673, Kaohsiung, Taiwan Declaration of Product Product Name: 61/2 Digit Digital Multimeter...

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