GW Instek GDM-SC1A Installation Manual
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GW Instek GDM-SC1A Installation Manual

GW Instek GDM-SC1A Installation Manual

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Scanner Card
GDM-SC1A
INSTALLATION GUIDE
REV. 01
ISO-9001 CERTIFIED MANUFACTURER

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Summary of Contents for GW Instek GDM-SC1A

  • Page 1 Scanner Card GDM-SC1A INSTALLATION GUIDE REV. 01 ISO-9001 CERTIFIED MANUFACTURER...
  • Page 2 This manual contains proprietary information, which is protected by copyrights. All rights are reserved. No part of this manual may be photocopied, reproduced or translated to another language without prior written consent of Good Will company. The information in this manual was correct at the time of printing. However, Good Will continues to improve products and reserves the right to change specifications, equipment, and maintenance procedures at any time without notice.

  • Page 3: Table Of Contents

    GDM-8255A, GDM-8261 or GDM-8261A multimeter. Up to two GDM-SC1A scanner cards can be installed into the GDM-8255A or one GDM-SC1A into the GDM-8261 or GDM-8261A. If two scanner cards are installed, one can be selected as the master scanner, and the other as the slave.

  • Page 4: Scanner Scanner Installation

    GDM-SC1A Scanner Card GDM-SC1A Basic Specifications 16 pairs 2A (ch17, ch18) 2-wire channel Maximum current 8 pairs 2/4 wire 4-wire channel Resistance Temperature Single wire channel Cold junction Sensors (Analog) 250V Screw terminal Maximum voltage Connection Scanner Installation Configure scanner 1.
  • Page 5 SCANNER CARD 3. Note the connection terminals. 16 general purpose channels are available, 8 on the left row, Overview 8 on the right row. Current (ACI, DCI) measurement uses 2 extra channels. All channels are fully isolated (Hi and Lo). Refer to the below table for measurement and test line Scan/Step connection.

  • Page 6: Installation Select Channel Group And Enable Scanner

    GDM-SC1A Scanner Card Select Channel group and enable scanner When 2 scanner modules are installed in the Background GDM-8255A, 2 groups of 18 channels each are available. The scanner modules have a jumper to configure which scanner is for which group. If only one scanner is installed, the scanner should always be configured to group 1(CH101~CH118).
  • Page 7 SCANNER CARD Set the jumper J9 on the rear side of the board Enable scanner accordingly. Move the jumper up to disable the (Jumper J9) scanner, and down to enable the scanner. (Preset Enabled) Disable Enable Set the jumper J10 on the Bottom left of the Enable cold board accordingly.
  • Page 8 GDM-SC1A Scanner Card Do Not set the jumpers horizontally as the figure below shown, which will Not enable the target Note functions. Erroneous example...
  • Page 9 SCANNER CARD Temperature sensor Calculation The temperature sensor provides a positive slope Overview output of 10 mV / °C The temperature sensor voltage output (Vout) Equation calculates given temperature (Ta): Ta = (Vout – Voffs) / Tc (Equation) where • Vout is the temperature sensor voltage output for a given temperature •...

  • Page 10: Connect Wire

    GDM-SC1A Scanner Card Connect wire Make sure the wires have at least the same Voltage and Wire selection Current capacity as the maximum ratings in the measurement. When measuring TC, it has the possibility that CH1 is being regarded as cold junction. In order to prevent conflicts, it is suggested initiating from CH2 for wiring.
  • Page 11 SCANNER CARD When using thermocouple measurement, The temperature sensor inside the scanner box. Move Note the J10 JUMP to cold compensation, and the CH1 value is switched to the temperature sensor value. You can use this temperature as a cold junction compensation.
  • Page 12 GDM-SC1A Scanner Card 4. Close the top cover and tighten the screws from the bottom. Print out the configuration record list on page14, fill in Configuration the details, and keep it with the DMM. Record Insert scanner Turn the Power Off and take out the power cord.
  • Page 13 SCANNER CARD Insert the scanner (already configured according to Insert the the procedures on page4) to either the top or scanner bottom slot (GDM-8261/GDM-8261A only has 1 slot). Close the cover by tightening the screws. GDM-8255A shown Connect the power cord and turn On the power. Power On Do not input voltages exceeding 250V to the front input terminals whilst the scanner module is...

  • Page 14: Scanner Configuration Record

    GDM-SC1A Scanner Card Scanner Configuration Record Measure type Channel Wire color Note CH10 CH11 CH12 CH13 CH14 CH15 CH16 CH17 CH18 CARD INPUT H CARD SENSE H AMPS...
  • Page 15 SCANNER CARD Specifications General All specifications are ensured only under a single  display. Note At least 30 minutes of warm-up time is required  before applying these specifications. General 16 channels of 2-pole relay input, which are configurable measurement to be 8 channels of 4-pole inputs channels Dedicated...

  • Page 16: Specification Specifications

    GDM-SC1A Scanner Card Environment Relative Humidity: 0°C ~35°C <75%, 35°C ~50°C <50% Dimension 121(W) x 22(H) x 178(D) mm Weight 260 grams GDM-8255A Reading rates (readings/sec) Test conditions: Auto mode off, auto range off, in  simple mode with default delays.

  • Page 17: Gdm-8255A Reading Rates &Specifications

    SCANNER CARD GDM-8255A Reading rates-Frequency (readings/sec) The signal being measured must be:  ≥ 0.1V rms when its frequency is lower than Note  100kHz ≥1V rms when its frequency is lower than 600kHz  ≥2.5V rms when its frequency is lower than ...
  • Page 18 GDM-SC1A Scanner Card DC Voltage *: 250V is the maximum input voltage limitation of  GDM-SC1A Scanner card though it is in fact used in the 1000.00V range. Note Maximum Input: 250V DC or Peak on all ranges  Rate...
  • Page 19 SCANNER CARD DC Current Maximum Input: : 2A  When GDM-SC1A scanner card is used, 1A & 10A  ranges are protected with a 3A/125V fuse Note Current ranges smaller than 1A are not selectable  when GDM-SC1A scanner card is used.
  • Page 20 GDM-SC1A Scanner Card AC Frequency Maximum Input: 250Vrms or 330V peak.  Note Rate Sensitivity 10Hz~100kHz 100k~600kHz 600k~800kHz 2.5V 0.0625%+19 0.0625%+4 0.0625%+4 Slow 0.0625%+19 0.0625%+4 0.1V 0.0625%+19 Diode/Continuity Max. Input: 250V DC or 250 V rms AC  Note Diode Range Approx.
  • Page 21 SCANNER CARD GDM-8261A Temperature Characteristics (Display in °C, °F, Exclusive of probe errors.) Note (Accuracy based on PT100): (100Ω platinum [PT100], D100, F100,PT385, PT3916, or user type)  Range Resolution 1 Year Temperature Coefficient (23°C ±5°C) 0°-18°C & 28°-55°C -200°C~ -100°C 0.001°C 0.27°C 0.012 °C / °C...
  • Page 22 GDM-SC1A Scanner Card OW TO THERMOCOUPLE MEASUREMENT Thermocouples consist of two spot-welded wires of Basic work different metals or alloys. The thermoelectric effect at the contact surface is used to measure temperatures. A relatively small thermoelectric voltage is caused, which depends on the temperature difference between the measuring point and the connecting terminals.

  • Page 23: How To Thermocouple Measurement

    HOW TO THERMOCOUPLE MEASUREMENT Scanner Card architecture The GDM-SC1A incorporates a temperature sensor Background (TMP235) in the box, which combines a direct thermocouple measurement with a reference junction compensation using a temperature IC to effectively compensate the temperature for the cold junction to calculate the actual temperature reading of the thermocouple.
  • Page 24 GDM-SC1A Scanner Card Temperature Sensor COLD COMPEN J10 is preset to CH1, please switch J10 to COLD COMPEN when cold junction compensation. It is recommended to start with CH2 when wiring.
  • Page 25 HOW TO THERMOCOUPLE MEASUREMENT Software This software is suitable for the GDM-SC1A scanner Background card. This manual is to be used with all versions of Excel from 2007 onwards with Windows PCs (Windows XP, Windows 7/8/10: 32 bit or 64 bit).

  • Page 26: Measurement Dmm_Scan_Card Software

    2. Enable office Excel macros. 3. The gain set will add a custom toolbar. 1. Press About DMM SCAN CARD version information DMM_SCAN_CARD (GDM-SC1A requires DMM SCAN Version 1.60 or higher to provide COLD Junction function) Show Connect UI Press Connect...
  • Page 27 HOW TO THERMOCOUPLE MEASUREMENT 2.Press Auto Search to automatically find connected devices ASRL7:INSTR 115200,N,8,1 model GWInstek, GDM8261A, GEO905513,1.03 Click COM Port select, press Connect to connect the device, press Disconnect to disconnect the device. If the display is green, the connection is successful.
  • Page 28 GDM-SC1A Scanner Card Press SETUP 1. Set measurement channel, Function, Range, Hi limit, Low limit, etc. 2. Cursor moved to ON/OFF □101 , Press □ ˅ 101 Cursor moved to Function, Press ▼ Select COLD Junction (Switch jumper 10 from CH1 to COLD Junction from Scanner Card).
  • Page 29 HOW TO THERMOCOUPLE MEASUREMENT When both Master and Slave scanner cards are being utilized by 8255A simultaneously, it is Note demanded to set CH1 as cold junction for both CH101 & CH201, and to initiate from CH2 for both CH102 & CH202 in terms of channels. 4.
  • Page 30 GDM-SC1A Scanner Card 6. Set scan conditions Continue When the LoopCyde function is checked, the number of scans can be set. 7. EXIT end setting Press TRIG Run scan Note: The first pen is uncompensated when first executed, and the cold offset value is calculated after the second pen.

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