Summary of Contents for GW Instek GDM-SC1
- Page 1 Scanner Card GDM-SC1 INSTALLATION GUIDE GW INSTEK PART NO. 82DM-SC100ED1 ISO-9001 CERTIFIED MANUFACTURER...
- Page 2 December 2013 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.
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Page 3: Table Of Contents
The optional scanner, GDM-SC1, lets you effectively measure multiple channels when connected to a GDM-8255A, GDM-8261 or GDM-8261A multimeter. Up to two GDM-SC1 scanner cards can be installed into the GDM-8255A or one GDM-SC1 into the GDM-8261 or GDM-8261A. If two scanner cards are installed, one can be selected as the master scanner (channel 1), and the other as the slave (channel 2). -
Page 4: Installation Gdm-Sc1 Basic Specifications
GDM-SC1 Basic Specifications GDM-SC1 Basic Specifications 16 pairs 2A (ch17, ch18) 2-wire channel Maximum current 8 pairs 2/4 wire 4-wire channel Resistance N/A (internal) Single wire channel Cold junction 250V Screw terminal Maximum voltage Connection Scanner Installation Configure scanner 1. Take off four screws from the bottom panel of the Open Scanner scanner. - Page 5 GDM-SC1 Scanner Card 3. Note the connection terminals. 16 general purpose channels are available, 8 on the left Overview row, 8 on the right row. Current (ACI, DCI) measurement uses 2 extra channels. All channels are fully isolated (Hi and Lo).
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Page 6: Select Channel Group And Enable Scanner
Scanner Installation 2 wires (H, L) 16 (CH1 ~ 16) Temp. 2W RTD 4 wires (Input H, 8 pairs (CH1 Temp. 4W RTD L + Sense H, L) [input]& 9[sense], 2&10,..8&16) 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. -
Page 7: Connect Wire
GDM-SC1 Scanner Card Set the jumper J9 on the rear side of the board Enable scanner accordingly. Move the jumper up (pins 3-2) to disable the (Jumper J9) scanner, and down (pins 2-1) to enable the scanner. Disabled Enabled Connect wire... - Page 8 Scanner Installation 2. Route the wires as follows, using the two openings (left and right) at the front cover. When using thermocouple wiring, please use extension wires so that the cold junction points are Note external to the scanner card. Connecting thermocouple wiring directly to the scanner box is not recommended due to the radiant heat from the internal components.
- Page 9 GDM-SC1 Scanner Card 4. Close the top cover and tighten the screws from the bottom. Print out the configuration record list on page12, fill in Configuration the details, and keep it with the DMM. Record...
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Page 10: Insert Scanner
Scanner Installation Insert scanner Turn the Power Off and take out the power cord. Power Off Take out the two screws on the slot corners to remove the Open the rear optional slot cover. Keep the screws for later reuse. panel slot GDM-8255A shown... - Page 11 GDM-SC1 Scanner Card Insert the scanner (already configured according to the Insert the procedures on page4) to either the top or bottom slot scanner (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.
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Page 12: Scanner Configuration Record
Scanner Installation Scanner Configuration Record Channel Wire color Measure type Note CH10 CH11 CH12 CH13 CH14 CH15 CH16 CH17 CH18 CARD INPUT H CARD SENSE H AMPS... -
Page 13: Specifications Specifications
GDM-SC1 Scanner Card Specifications General All specifications are ensured only under a single display. At least 30 minutes of warm-up time is required before Note applying these specifications. General 16 channels of 2-pole relay input, which are configurable to... - Page 14 Specifications GDM-8255A Reading rates (readings/sec) Test conditions: Auto mode off, auto range off, in simple mode with default delays. Note The test items listed below may require proper delay to obtain in-spec reading. Function Rate(readings/sec) 2/4WΩ (10M/100MΩ) ACV+DCV ACI+DCI Diode GDM-8261/GDM-8261A Reading rates (readings/sec)
- Page 15 GDM-SC1 Scanner Card GDM-8255A Reading rates-Frequency (readings/sec) The signal being measured must be: ≥ 0.1V rms when its frequency is lower than 100kHz Note ≥1V rms when its frequency is lower than 600kHz ≥2.5V rms when its frequency is lower than 800kHz ...
- Page 16 Specifications DC Voltage *: 250V is the maximum input voltage limitation of GDM-SC1 Scanner card though it is in fact used in the 1000.00V range. Note Maximum Input: 250V DC or Peak on all ranges Rate Range Resolution...
- Page 17 GDM-SC1 Scanner Card DC Current When GDM-SC1 scanner card is used, 1A & 10A ranges are protected with a fuse Current ranges smaller than 1A are not selectable when Note GDM-SC1 scanner card is used. Rate Range Resolution...
- Page 18 Specifications 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. 2V, 0.5mA Continuity 1 ~ 1000Ω...
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