GT310 - General Tools And Instruments
Contents
1. 22 Optional Accessories and Replacement Parts 22 Warranty Information 23 Return for Repair 23 2 INTRODUCTION Thank you for purchasing General Tools amp Instruments GT310 Wireless Data Logging Multimeter with Dual 7 Segment LCD plus NCVD NCCD Please read this manual carefully and thoroughly before using the instrument The GT310 can measure with better than 1 accuracy in most cases the six electrical parameters DC voltage AC voltage DC current AC current resistance and capacitance that most professional grade multimeters measure Like other multimeters it can also be used to verify the integrity of a diode and to check for continuity within a circuit However the GT310 has two safety and convenience features NCVD NCCD and wireless device to device communication that many comparably priced multimeters lack NCVD and NCCD non contact voltage and current detection empower the electrician in several valuable ways For example the meter s integrated NCVD sensor can quickly determine which wire in a group is live without the user having to tap all the lines It is so sensitive it can pinpoint the location of a 30VAC line inside PVC conduit behind a wooden wall The NCCD sensor in the GT310 is equally impressive It can detect as little as 500 mA of current flowing behind a concrete or2. AC CURRENT A A The circuit to be tested may not carry a voltage in excess of 1000VDC or 750VAC Applying a current of gt 500 mA will blow the fuse in the red test lead To remove the fuse unscrew the top of the red lead Replace the blown fuse with a fast acting ceramic fuse with a rating of 500mA 500V Turn the rotary dial to the uA or mA position depending on the expected amplitude The unit uA or mA will appear at the right of the display The word AUTO will appear at the top left indicating that the meter is in Auto ranging mode 14 The default mode is DC current measurement indicated by the symbol near the top left of the display To measure AC current press the Select 0 9 button to change the symbol to Touch the test leads to two points in the circuit and read the displayed value A minus sign at the left of the reading indicates a negative value in DC current mode If applying current produces a reading of OL in uA Measurement mode switch to mA Measurement mode To switch to Manual Ranging mode briefly press the Range button once to remove the AUTO indication from the top left of the display Each subsequent press of the Range button decreases the measurement sensitivity increases the full scale measurement range by a factor of 10 one decimal place If the measured current amplitude is greater than the full scale range the display will show OL To return to Auto ranging mode press and hold the Range
3. or bottom readout press briefly to increment channel number Pressing the button briefly with the display showing CH 9 resets readout to CH 0 11 Two function Hold CH button a Press briefly to hold freeze reading s Press briefly again to release hold b Press and hold for gt 3 seconds to enter Hi channel entry mode In Hi channel entry mode press briefly to enter Lo channel entry mode In both modes if no entry is made within 10 seconds readout s revert to showing real time measurements 12 Rotary dial 13 COM jack for black negative test lead 14 Jack for red positive test lead 15 Battery compartment on back of unit 16 Black negative test lead 17 Red positive test lead Contains fast acting ceramic fuse rated at 500mA 500V 18 Protective caps for test leads The table below explains the symbols and abbreviations used on the meter and in this manual Electrical Symbols Used On the Meter and In This Manual Adjust reading to zero Wireless transmit mode Wireless receive mode Alternating voltage current Direct voltage current Negative Freeze Hold reading H 9 Wireless Transmit Receive Tx Rx channel 0 9 m 10 gt Diode AUTO Auto ranging Low battery CAT III Overvoltage Category CAT IV Overvoltage Category 4 Ground Beeper NCVINCVD Non Contact Voltage AC Detection NccINCcD Non Contact Current AC Detection SETU
4. 4000 0 10 0 7 of reading 5 digits 0 4kQ 0 001kQ 0 6 of reading 2 digits 0 40kQ 0 01kQ 0 6 of reading 2 digits 0 400kQ 0 7 of reading 2 digits 0 4MQ 0 001MQ 1 5 of reading 5 digits 0 40MQ 0 01MQ 2 0 of reading 6 digits Capacitance Manual Range Range Resolution Accuracy 0 52nF 0 01nF 3 of reading 7 digits 0 520nF 0 1nF 3 of reading 5 digits 0 5 2uF 0 001 uF 3 of reading 5 digits 0 52uF 0 1uF 10 of reading 10 digits 0 100uF 0 1uF 10 of reading 10 digits Diode Integrity Check Range Resolution Accuracy 1 5V Open 0 001V 10 of reading 5 digits 21 Continuity Check Range Resolution Accuracy 400Q Display reading 0 0Q 0 8 of reading 6 digits Beeper sounds when lt 30Q 0 00 0 8 of reading 6 digits Non Contact AC Voltage Detection Range Resolution 0000 signal strength 1 count Buzzer speeds up and red backlight flashes 1 count when signal strength gt 0010 Non Contact AC Current Detection Range Resolution 0000 signal strength 1 count Buzzer speeds up and green backlight flashes 1 count when signal strength gt 0010 MAINTENANCE TIPS The GT310 is not waterproof or water resistant avoid water toxic environments and temperature extremes Do not turn on the meter immediately after it has been taken from a cold to a warm environment The condensation that may result could destroy the unit Leave the meter switched off and wait until it reaches r
5. ODE OR THE CONTINUITY OF A CIRCUIT Before checking a diode or checking for continuity be sure to remove power from the circuit under test Turn the rotary dial to the Q position With the symbol MQ at the right of the display briefly press the Select 0 9 button once to call up the diode symbol gt Connect the red test lead to the anode positive terminal of the diode to be tested and the black test lead to its cathode negative terminal Read the forward bias voltage value on the display A typical silicon diode has a forward bias voltage between 0 7 and 0 99V A typical germanium diode has a forward bias voltage between 0 3 and 0 36V A OV reading in both directions indicates a shorted diode An OL reading indicates an open diode In either case the diode is defective and should be replaced An OL reading also may indicate that the polarity of the test leads is reversed This test can be used to distinguish the anode and cathode of a diode To enter Continuity Check mode briefly press the Select 0 9 button once with the diode symbol showing on the display This will change the diode symbol to the Q unit If the icon is not visible at the right of the display activate the beeper by pressing the Buzzer button In Continuity Check mode the initial reading will be OL Touch the test leads to any two points in the circuit If the resistance between the points is lt 30 Q the meter will produce a long beep MEASURING DC OR
6. P INSTRUCTIONS INSTALL BATTERY The battery of your GT310 may or may not already be installed If the display remains dark after you turn the rotary dial to any position other than OFF Return the rotary dial to the OFF position e Disconnect test leads e Flip the meter over and lift the bottom of the yellow foldaway stand on the back with your fingertip or a flat blade screwdriver Loosen and remove the two Phillips head screws securing the rectangular yellow plastic battery compartment cover Set the cover aside e Install a fresh 9V battery in the compartment with the terminal anode on the right with the back of the meter facing you Replace the battery compartment cover and resecure it with the two screws INSERT TEST LEADS Plug the red fused test lead into the right red socket on the front of the meter and plug the black lead into the black socket Remove the clear plastic caps from the tips of the leads OPERATING INSTRUCTIONS GENERAL INSTRUCTIONS e hold freeze a reading briefly press the Hold CH button e To turn the beeper on or off press and hold the Buzzer button e To turn the backlight on or off briefly press the Buzzer button e The meter is equipped with an Auto Power Off APO function that is triggered by 15 minutes with no input It cannot be disabled To wake up the meter in the same measurement state but not transmission reception state it was in when the APO fu
7. WIRELESS DATA LOGGING MULTIMETER WITH DUAL 7 SEGMENT LCD PLUS NCVD NCCD USER S MANUAL laptop not included optional RD330 GT3 1 not included Please read this manual carefully and thoroughly before using this product TABLE OF CONTENTS introduction OR EE ER EE N 3 4 Key Features amp 5 Whats m the BOX gese 6 Safety Instructions ke Ee ee ER 6 8 Product 8 11 Setup 1 51 0 11 Install Battery ss ste Ee GED ER ee Deen Oe ere cree 11 Insert Test lt 11 Operating Instructions 12 19 General Instructions 12 Measuring DC or AC Voltage 12 13 Measuring Resistance or Capacitance 13 Checking the Integrity of a Diode orthe 14 Continuity of a Circuit Measuring DC or AC 14 15 Non Contact AC Voltage Current Detection NCVD NCCD 15 GOING 55 16 19 Transmitting Data 16 18 Receiving and Displaying Data from Second GT310 or a 67320 18 19 5 lt 19 22 Maintenance 5
8. aired When in doubt have the meter serviced e AWARNING Do not apply more than the rated voltage as marked on the meter between the terminals or between any terminal and ground e AWARNING Do not measure voltages above 500V in CAT Ill installations e AWARNING Do not measure voltage with the rotary dial pointing to the resistance ohms current capacitance or NCVD or NCCD positions Never measure current with the dial pointing to the resistance ohms capacitance or NCVD or NCCD positions e Use caution when working with voltages above 42V ACrms or 60V DC These voltages pose a shock hazard e Use the proper terminals function and range for all measurements e AWARNING Do not operate the meter around explosive gas vapor or dust e AWARNING When using the probes keep your fingers behind the finger guards Do not touch the metal probes of the test leads when making a measurement e When making connections connect the black test lead before connecting the red test lead when disconnecting disconnect the red test lead before disconnecting the black test lead e Disconnect circuit power and discharge all high voltage capacitors before measuring testing resistance continuity diodes or capacitance e For all DC functions in both auto ranging and manual ranging modes to avoid the risk of shock due to possible improper reading verify the presence of any AC voltages by first using the AC voltage mea
9. button NON CONTACT AC VOLTAGE CURRENT DETECTION NCVD NCCD Turn the rotary dial to the NCVD or NCCD position Move the meter at least several feet away from all wiring and briefly press the Adj Zero button This maximizes the sensitivity of the NCVD or NCCD sensor Holding the meter in your hand slowly move its top toward the known or suspected source of voltage or current As the meter approaches the potential source of AC voltage or current the display reading will increase the beeper will increase its speed and a light red for voltage green for current behind the left side of display will flash faster The display reading is a relative value with no units When the reading peaks briefly press the Hold button to freeze it To use the meter to distinguish a true live wire from a ghost live wire turn the rotary dial to the NCVD position move the meter away from all wiring and press the Adj Zero button Plug the red test lead into the red front panel socket Touch the tip of the lead to the suspected live wire and note the display reading Also touch other suspected sources The true live wire will produce the highest reading GOING WIRELESS Transmitting Data to a PC Use the following procedure to enable your GT310 to display its readings on a PC monitor using digits that are several inches high large enough to be visible across a room You will first download and install the software that enables your GT310
10. eged to be a consequence of any damage due to failure of or defect in any product including but not limited to any Claims for loss of profits RETURN FOR REPAIR POLICY Every effort has been made to provide you with a reliable product of superior quality However in the event your instrument requires repair please contact our Customer Service to obtain an RGA Return Goods Authorization number before forwarding the unit via prepaid freight to the attention of our Service Center at this address General Tools amp Instruments 80 White Street New York NY 10013 212 431 6100 23 ENERAL Specialty Tools amp Instruments GENERAL TOOLS amp INSTRUMENTS 80 White Street New York NY 10013 3567 PHONE 212 431 6100 FAX 212 431 6499 TOLL FREE 800 697 8665 e mail sales generaltools com www generaltools com GT310 User s Manual Specifications subject to change without notice 2012 GENERAL TOOLS amp INSTRUMENTS NOTICE WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS MAN GT310 7 12 12
11. hanging it fast and easy In many other multimeters changing a blown fuse requires the user to open up the instrument The red lead has a unique square plug The meter s use of a square jack prevents potentially damaging use of industry standard round non fused leads 4 N KEY FEATURES amp SPECS 12 functions 33 ranges e Measures AC DC voltage up to 750VAC 1000VDC AC DC current up to 400mA resistance up to 40mQ2 and capacitance up to 100 uF e Verifies integrity of diodes and checks circuits for continuity e Includes double insulated test leads red lead has fast acting ceramic fuse rated at 500mA 500V and unique square plug Corresponding square jack on meter prevents potentially damaging use of round non fused leads e Includes non contact AC voltage and current detection NCVD and NCCD sensors with beeper e CAT Ill 1000V CAT IV 500V certified Wirelessly interfaces to PC at 2 4 GHz from up to 33 ft 10m away via included USB dongle e Includes transceiver module for wirelessly interfacing to second GT310 or GT320 functionally identical model with dot matrix display or optional RD330 Remote Display with Memory e Choice of 10 channels for each wireless link e Two line 3 3 4 digit 4000 count 7 segment LCD with 0 67 in 17mm high digits on upper readout e Auto ranging or manual ranging e Data hold and zero adjust buttons e Fifteen minute Auto Power Off function e Low batte
12. lt 80mA transmit receive mode e Dimensions Excluding Test Leads 7 1 x 3 7 x 2 1 in 180 x 95 x 54mm e Weight Excluding Battery 1 Ib 450g MEASUREMENT RANGES RESOLUTIONS amp ACCURACIES AC Voltage Manual Range Range Resolution Accuracy 0 400mV 0 1mV 0 6 of reading 3 digits 0 4V 0 001V 0 6 of reading 3 digits 0 40V 0 01V 0 6 of reading 3 digits 0 400V 0 1V 0 6 of reading 3 digits 0 750V 1V 1 0 of reading 5 digits DC Voltage Manual Range Range Resolution Accuracy 0 400mV 0 1mV 0 6 of reading 2 digits 0 4V 0 001V 0 6 of reading 2 digits 0 40V 0 01V 0 6 of reading 2 digits 0 400V 0 1V 0 6 of reading 2 digits 0 1000V 1V 0 8 of reading 2 digits AC Current uA Setting Manual Range Range Resolution Accuracy 0 400uA 0 1uA 0 15 of reading 5 digits 0 4mA 1uA 0 15 of reading 5 digits 20 DC Current uA Setting Manual Range Range Resolution Accuracy 0 400uA 0 1uA 0 12 of reading 3 digits 0 40000 1uA 0 12 of reading 3 digits AC Current mA Setting Manual Range Range Resolution Accuracy 0 40mA 0 01mA 0 15 of reading 5 digits 0 400mA 0 1mA 0 15 of reading 5 digits DC Current mA Setting Manual Range Range Resolution Accuracy 0 40mA 0 01mA 0 15 of reading 5 digits 0 400mA 0 1mA 0 15 of reading 5 digits Resistance Manual Range Range Resolution Accuracy 0
13. nction activated briefly press the Power Tx Rx Ax button Callout 7 of Fig 1 You need not turn the rotary dial to power the meter on again e Each time you finish using the meter turn the rotary dial to the OFF position e To ensure the accuracy of measurements make sure that the points touched by the test probes are free from dirt oil lacquer and similar substances e Until you configure the meter for wireless operation only the upper readout will display measurements In normal operating mode the display will T H H 20 look mv like this MEASURING DC OR ad GE AC VOLTAGE A A Do not exceed maximum ratings Do not contact circuits or parts of circuits in which voltages with amplitudes greater than 25V ACrms or 35VDC may be present Turn the rotary dial to the V position The unit mV will appear at the right of the display The symbol will appear at the top left of the display below the word AUTO indicating that the meter is ready to measure DC voltage in Auto ranging mode To measure AC voltage briefly press the Select 0 9 button to change the symbol to 12 Touch the test leads to two points in a circuit at different electric potential A minus sign at the left of the reading indicates a negative voltage To switch to Manual Ranging mode press the Range button briefly once to remove the AUTO indication from the top left of the display With two exceptions
14. o appear ren 16 On the meter press the Power Tx Rx Ax button once The SE icon will appear at right You will next choose CH 1 as the meter s transmitting channel To do so press and hold the Hold CH button When a flashing 0 the default channel number appears at the right of CH on the upper readout quickly within 10 seconds press the Select 0 9 button once to advance the channel counter to 1 Quickly save the setting by pressing and holding the Hold CH button 17 On the DMMD_PCView 5 screen click the Scan CH button The program will begin scanning Channels 0 through 9 Scanning will stop when the GT310 s transmission on Channel 1 is detected causing the 1 button to turn green 18 Click again on the green button to produce a display like the following 028 9 mV 19 The reading on the DMMD_PCView screen will continue to duplicate the contents of the GT310 s upper readout Receiving and Displaying Data from a Second GT310 or a GT320 To configure your GT310 to receive display measurements and indications from another GT310 or a GT320 wireless multimeter use the Power Tx Rx Ax button When the meter is powered on the default setting is no communication To enable transmission briefly press the Power Tx Rx Ax button once 5 icon L en will appear at the right of the upper readout LI H LI H LIL m
15. oom temperature Remove the battery when you do not expect to use the unit for a long period of time Several months Clean the display by wiping it with a damp soft cloth Never use solvents or abrasives OPTIONAL ACCESSORIES AND REPLACEMENT PARTS e Replacement GTSFO5 Wireless USB Receiver dongle Optional RD330 Remote Display with Memory e Replacement TL300 Fused Test Leads 22 WARRANTY INFORMATION General Tools amp Instruments General s 67310 Wireless Data Logging Multimeter with Dual 7 Segment LCD plus NCVD NCCD is warranted to the original purchaser to be free from defects in material and workmanship for a period of one year Subject to certain restrictions General will repair or replace this product if after examination the company determines it to be defective in material or workmanship This warranty does not apply to damages that General determines to be from an attempted repair by non authorized personnel or misuse alterations normal wear and tear or accidental damage The defective unit must be returned to General Tools amp Instruments or to a General authorized service center freight prepaid and insured Acceptance of the exclusive repair and replacement remedies described herein is a condition of the contract for purchase of this product In no event shall General be liable for any incidental special consequential or punitive damages or for any cost attorneys fees expenses or losses all
16. plaster wall under a floor above a ceiling in an overhead line or in a buried underground cable The NCCD sensor can also detect RF signals such as from a walkie talkie and magnetic fields Wireless communication offers an additional level of safety and convenience Being able to read the meter s measurements from up to 33 ft 10m away on a PC on a second multimeter in the GT Series or on the optional RD330 Remote Display with Memory lets the electrician observe the effect of throwing a switch or changing a setting on a piece of equipment without having to be near it If a system or piece of equipment operates at high voltages remote display makes troubleshooting it safer If multiple changes to another system or piece of equipment are needed to troubleshoot a problem remote display may save an electrician considerable time by allowing him or her to immediately see the results of each step taken without having to shuttle between two areas The GT310 can be part of three different kinds of wireless communication schemes 1 The meter includes a small USB receiver called a dongle that enables any PC to display all the information shown on the unit s display The Going Wireless section of this user s manual provides instructions for downloading the software needed to activate this connection The advantage of using a PC s monitor to display the meter s measurements is readability readings sent to the screen of a la
17. ptop or desktop computer are several inches high large enough to be visible across a room With two GT310s or one GT310 and one GT320 essentially a GT310 with a dual dot matrix display instead of a dual 7 segment display each meter can be configured to display its own measurements on its upper readout and receive and display the other meter s measurements on its lower readout Both models include the wireless transceiver module needed to share readings remotely improving safety in the process in this way For even greater remote display versatility consider purchasing General s RD330 Remote Display with Memory as an optional accessory The standalone 4 in x 4 in unit which uses the same wireless transceiver module as the GT310 and GT320 can not only display the readings of two multimeters simultaneously on its own dual LCD with 0 67 in 17mm high digits it can also memorize up to 99 readings or pairs of readings In addition to its memory the advantages of using the RD330 as a remote GT310 display are compactness and portability Another key feature of the GT310 is its pair of double insulated fused test leads Like NCVD NCCD and wireless device to device communication the fuse in the red test lead offers the electrician safety and convenience It not only prevents excessive currents from flowing through the meter potentially injuring the user and damaging the meter In addition the position of the fuse makes c
18. readout will display data from the second multimeter The composite display will look like this SPECIFICATIONS GENERAL SPECIFICATIONS e Maximum Voltage between Terminal and Ground CAT III 1000V CAT IV 500V e Test Leads Characteristics Double sheath soft PVC wire fitted with 500mA 500V fast acting ceramic fuse measuring 6mm across 32mm long Red lead also has unique square plug compatible with jack on meter Display Type Two line 3 3 4 digit 4000 count 7 segment LCD with 0 67 in 17mm high digits on the upper readout e Sampling Rate 3 times 1 sec Maximum Voltage Measurement DC 1kV AC 750V e Input Impedance in Voltage Measurement Mode 10MO Maximum AC DC Current Measurement 400mA Maximum Resistance Measurement 40MQ Maximum Capacitance measurement 100uF e Diode Integrity Test Voltage 1 5V e Continuity Check Threshold lt 30Q with beeper Non contact AC Voltage Detection Range 50V to 1 kV or higher 100 to 250V in Live or Ghost mode Non contact AC Current Detection Range 100mA to 1000A or higher Transmission Reception Half duplex Ten channels centered on 2 4GHz Communication Range gt 33 ft 10m e Auto Power Off Interval 15 minutes e Backlight Fadeout Interval 90 seconds e Power Source 1 9V battery e Power Consumption lt 3mA standby mode lt 20mA normal operating mode lt 25mA transmitting mode lt 60mA receiving mode
19. ry indicator e Ergonomic design with rugged rubber housing WHAT S IN THE BOX The GT310 comes in a black soft pouch inside a box Also inside the box are e A pair of fused test leads General Part No TL300 e A USB dongle General Part No GTSF05 for wireless viewing of the meter s display on a PC Software for enabling the dongle to display the GT310 s readings on a PC is downloadable from the GT310 page of General s website e A 9V battery e This user s manual SAFETY INSTRUCTIONS ANWARNING To avoid possible electric shock or personal injury and to avoid damaging the meter or the equipment under test e Do not use the meter in any way not detailed in this manual or the meter s safety features may be compromised e Before using the meter inspect the case Do not use the meter if it is damaged Look for cracks or missing plastic Pay particular attention to the insulation around the connectors e AWARNING Inspect the test leads for damaged insulation or exposed metal Check the test leads for continuity Replace damaged test leads before using the meter e For safety reasons you cannot switch to using unfused test leads to make measurements YOU MUST USE FUSED TEST LEADS fitted with a fast blow fuse rated at 500mA 500V Using unfused test leads also voids the limited warranty e Verify the meter s operation by measuring a known voltage Do not use the meter if it operates abnormally Protection may be imp
20. surement function Then select a DC voltage range equal to or greater than the AC range e Before measuring current turn off power to the circuit before connecting the meter e Do not operate the meter with the case or part of the case removed e Replace the battery as soon as the low battery indicator appears Operated with a weak battery the meter might produce false readings that could lead to electric shock and personal injury e Remove the test leads from the meter before opening the meter case or battery compartment PRODUCT OVERVIEW Fig 1 shows the labels and positions of the controls indicators and connectors on the front and top of the GT310 Familiarize yourself with their functions as explained below before moving on to the Setup Instructions and Operating Instructions Fig 1 The GT310 s controls indicators and connectors 1 Replaceable 2 4GHz transceiver module on top of unit 2 NCCD sensor on top of unit 3 NCVD sensor on top of unit 4 Two line 7 segment LCD 5 Flashing red green indicator of operation in NCVD NCCD mode 8 6 Two function Range button a In all measurement modes press briefly to exit Auto ranging mode default and enter Manual Ranging mode With two exceptions the highest voltage ranges each subsequent brief press of the button decreases the measurement sensitivity increases the full scale meas
21. the highest ranges each subsequent brief press of the button decreases the measurement sensitivity increases the full scale measurement range by a factor of 10 one decimal place If the measured voltage is greater than the full scale range the readout will be OL To return to Auto ranging mode press and hold the Range button In AC or DC voltage measurement mode the meter presents an input impedance of gt 10 to the circuit under test MEASURING RESISTANCE OR CAPACITANCE Before measuring resistance or capacitance be sure to remove power from the circuit under test and to discharge any high voltage capacitors in it Turn the rotary dial to the Q position The unit MQ will appear at the right of the display The word AUTO will appear at the top left indicating that the meter is in Autoranging mode To measure the resistance between two points of a circuit touch the test leads to those two points To measure the capacitance between two points of a circuit press the Select 0 9 button briefly three times to change the MQ symbol to the letter F Then touch the test leads to the two points of interest To switch to Manual Ranging mode press the Range button briefly once to remove the AUTO indication from the top left of the display Each subsequent brief press of the button decreases the measurement sensitivity increases the full scale measurement range by a factor of 10 one decimal place CHECKING THE INTEGRITY OF A DI
22. to communicate with the GTSF05 wireless USB receiver dongle supplied with the meter The final few steps of the procedure explain how to match the software s receiving channel to the transmitting channel of the GT310 1 Go to www generaltools com and enter GT310 in the SEARCH box 2 On the GT310 page click the Download General Tools Product Software button 3 Save lt GTSFO5_Setup zip gt to your desktop 4 Click the Open button on the icon 5 Highlight lt GTSF05_Setup msi gt 6 Use a utility like WinRAR to extract lt GTSF05_Setup msi gt to your desktop 7 Double click lt GTSFO5_Setup msi gt doing so opens a window titled Welcome to the DMMD_PCViewSetupWizard Click Next 8 Click Next to install lt DMMD_PCView gt on your computer in a folder named lt C ProgramFiles x86 DMMD_PCView gt To install the program elsewhere click Browse and choose an alternate location 9 The next window confirms the installation Click Next to continue 10 The next window is titled lt Installing DMMD_PCView gt Installation typically takes less than 1 minute 11 Click Close to exit 12 Note that a GTSF05 exe icon has been added to your PC s desktop and Start button 13 Double click the icon to open the program 14 Tips window will appear asking you to Please insert GTSFO5 dongle 16 15 Plug the dongle into any open USB port on your computer Doing so will cause the following screen t
23. urement range by a factor of 10 one decimal place b In all measurement modes press and hold for gt 3 seconds to exit Manual Ranging mode and enable Auto ranging 7 Multi function Power Tx Rx Ax button a Press briefly to enable transmission Tx mode ae appears at upper right of display b Press briefly a second time to enable reception Rx mode appears at upper right Press briefly a third time to enable transmission and reception Ax mode both icons appear d Press briefly a fourth time to disable transmission and reception both icons disappear e With rotary dial in any position but OFF press and hold for gt 3 seconds to power meter on or off 8 Adj Zero button press briefly to reset readout 9 Two function Buzzer button a Press briefly to turn backlight on off b Press and hold for 3 gt seconds to turn beeper on off appears disappears at right of display 10 Multi function Select 0 9 button a In voltage and current measurement modes press briefly to switch from DC measurement default to AC measurement With rotary dial set to 4 position press briefly to switch from resistance measurement mode the default to diode integrity check mode Press briefly again to switch to continuity check mode Press briefly again to switch to capacitance measurement mode Press briefly again to return to resistance measurement mode In channel entry mode with channel number flashing in top
24. y and the display will look like this To enable reception briefly press the Power Tx Rx Ax button a second time The 5 icon will disappear anda appear at the right of the lower readout In receive only mode your GT310 will not display any of its own measurements on the upper readout it will only display on its lower readout measurements from a second wireless multimeter Immediately after you enable receive mode your GT310 will operate in standby receive mode until you synchronize its receiving channel with the transmitting channel of the other meter Before you synchronize the two meters the display will look like this After you synchronize the two multimeters the new display will duplicate the data shown on the second meter and look like m1 IE EF this Liu To match the receiving channel of your GT310 to the transmitting channel of the second multimeter press and hold the Hold CH button and then press it briefly to cause the lower readout to show CH 0 Quickly within 10 seconds press the Select 0 9 button as many times as needed until the channel number on the lower readout matches the transmitting channel number of the second multimeter 18 To enable transmission and reception briefly press the Power Tx Rx Ax button a third time This will cause both satellite dish icons to appear at the right of the display The upper readout will display data from your GT310 and the lower
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