96 Digital Multimeter Instruction Manual
TABLE OF CONTENTS page A. INTRODUCTION 1. Congratulations ··············· 4 2. Product Description ············ 4 3. EC Declaration of Conformity ······ 5 B. SAFETY CONSIDERATIONS ········· 6 C. TECHNICAL DATA 1. Features and Benefits ··········· 8 2. Product Applications ··········· 9 3. Specifications ················ 10 D. MEASUREMENT TECHNIQUES 1. Controls and Functions ········· 2. Power on Options ············· 3.
A. INTRODUCTION 4) Manually Stepping the mA Output ················ n) Loop Power Supply Mode ····· o) RS-232C interface ·········· E. ACCESSORIES ················· 34 36 37 40 F. MAINTENANCE 41 ················· G. TROUBLE SHOOTING GUIDE ········ 42 INTRODUCTION 1. Congratulations!! Thank you for purchasing a TPI Digital Multimeter. The Triple Display196 is an innovative new concept in DMM design. The unique display enables you to view more than one event at a time.
3. EC Declaration of Conformity This is to certify that model DMM 196 conforms to the protection requirement of the council directive 89/336/EEC, in the approximation of laws of the member states relating to Electromagnetic compatibility and 73/23/EEC, the low voltage Directive by application of the following standards: EN 50081-1 EN 50082-1 EN 61010-1 EN 61010-2-031 1992 Emissions standard 1992 Immunity standard 1993 Safety standard 1995 Safety standard B.
INTERNATION SYMBOLS CAUTION: RISK OF ELECTRIC SHOCK AC (ALTERNATING CURRENT) C. TECHNICAL DATA 1. Features and benefits Safety Meets CE and IEC 1010 requirements. UL Listed to U.S. and Canadian Safety Standards. True RMS Needed to accurately measure nonsinusoidal AC voltage and current waveforms found on many controls and circuits. DC (DIRECT CURRENT) REFER TO INSTRUCTION MANUAL GROUND FUSE DOUBLE INSULATION Triple Display Shows more than one reading simultaneously.
2. Product Applications Perform the following tests and/or measurements with the DMM196 and the appropriate function: HVAC/R DC mV ACA ACV ACV or DCV DcuA OHMS OHMS OHMS OHMS Hz/FREQ CAP REC • Gas application. • Heat anticipator current in thermostats. • Line voltage. • Control circuit voltage. • Flame safeguard control current. • Heating element resistance (continuity). • Compressor winding resistance. • Contactor and relay coil resistance. • Continuity of wiring. 3.
3. Specifications (cont.) 3. Specifications (cont.) General Specifications d. DCA a. DCV Range Resolution Accuracy Impedance 5V 50V 500V 1000V 0.0001V 0.001V 0.01V 0.1V +/-0.05% of reading, +/- 4digits 10MΩ +/-0.1% of reading, +/- 10digits Resolution Resolution Accuracy Overload protection 5mA 50mA 500mA 1A 0.0001mA 0.001mA 0.0001A 0.01mA +/-0.5% of reading, +/- 5digits +/-0.75% of reading, +/- 5digits Fuse(fast blow) F600V, 0.
3. Specifications (cont.) 3. Specifications (cont.) h. Continuity Buzzer Test voltage 3V l. General Specifications Threshold Overload protection 30digits 600V DC or AC peak i. Current Output Mode Range Accuracy Source Smulate 0~24mA 0~24mA 0.1% of reading, +/- 10digits j. Frequency Range Resolution Accuracy Overload protection 500Hz 5Khz 50Khz 500Khz 0.01Hz +/-0.05% of reading, 0.0001Khz +/- 5digits 0.001Khz 0.01Khz 600V DC or AC peak Max. volt.
D. MEASUREMENT TECHNIQUES Selects the DC A function (Push ORANGE button to activate AC A.) 1. Controls and function: Push Button Adp RANGE Activates manual range REC Activates the Min/Max/Avg mode. REL % Activates REL% mode. EDIT Activates the EDIT mode for the compare and relative % function. Activates Backlight for the LCD(Automatically turns off after approx. 35 sec.) COMP Activates Compare mode.
3. Step by step procedure a. Measuring DC Volts CAUTION Do not attempt to make a voltage measurement if a test lead is plugged in the A or mA input jack. Instrument damage and/or personal injury may result. WARNING! Application Notes When measuring DC Voltage of a battery, the most accurate reading can be attained by testing the battery under load.
b. Measuring AC Volts CAUTION Do not attempt to make a voltage measurement if a test lead is plugged in the A or umA input jack. Instrument damage and/or personal injury may result. WARNING! Do not attempt to make a voltage measurement of more than 750V or of a voltage level than is unknown. Application Notes Disconnect power from the terminal block, find the fuse or circuit breaker that controls the block and turn it off.
c. Measuring DC Amps CAUTION Do not attempt to make a current measurement with the test leads connected in parallel with the circuit to be tested. Test leads must be connected in series with the circuit. WARNING! Do not attempt to make a current measurement of circuits with more than 600V present. Instrument damage and/or personal injury may result. Instrument set-up: FUNCTION BLACK TEST LEAD COM COM RED TEST LEAD mA A MINIMUM READING MAXIMUM READING Application Notes 0.001mA 0.0001A 500.00mA 10.
e. Measuring Resistance d. Measuring AC Amps CAUTION Do not attempt to make a current measurement with the test leads connected in parallel with the circuit to be tested. Test leads must be connected in series with the circuit. WARNING! NOTE: Do not attempt to make a current measurement of circuits with more than 600V present. Instrument damage and/or personal injury may result.
f. Measuring Diodes g. Continuity Buzzer CAUTION Do not attempt to make diode measurements with circuit energized. The only way to accurately test a diode is to remove it completely from the circuit before attempting to measure it. WARNING! Do not attempt to make continuity measurements with circuit energized. IInstrument set-up: FUNCTION BLACK TEST LEAD RED TEST LEAD Instrument set-up: FUNCTION BLACK TEST LEAD RED TEST LEAD COM MINIMUM READING MAXIMUM READING 0.001V 2.
h. Measuring Frequency i. Record Mode WARNING! Never attempt a frequency measurement with a voltage source greater than 600V. Determine the voltage of any unknown frequency source before connecting the instrument in frequency source before connecting the instrument in frequency mode. FUNCTION BLACK TEST LEAD RED TEST LEAD COM The record mode saves minimum (MIN) and maximum (MAX) values measured for a series of readings.
j. Compare Mode The compare mode takes the actual reading on the main display and compares it to LOW and HIGH values, programmed by the user, on the sub-displays. This is used to compare components or measurements for acceptable readings. Activate the function as follows: The Relative % mode takes the actual reading on the main display and compares it to a reference value programmed by the user on the right hand sub-display.
l. Two-Hold System The two-hold system is a data hold feature that will automatically store a stable reading under the 1 HOLD subdisplay in the lower left hand corner of the LCD. When a new, stable reading is obtained, the reading under 1 HOLD will be moved to 2 HOLD and the new reading will be displayed under 1 HOLD Depress the HOLD button to activate the feature. Push the button again to de-activate the feature. m.
Changing the Current Span The meter’s current output span has two settings (with overrange to 24 mA): Table 2. mA Stepping Pushbuttons Buttons Adjustment STEP ● 4 mA = 0 %, 20 mA = 100 % ● 0 mA = 0 %, 20 mA = 100 %(factory default) To find out which span is selected, short the OUTPUT SOURCE + and - jacks, turn the rotary function switch to OUTPUT [ mA, and observe the 0 % output level. To toggle and save the current output span in nonvolatile memory (retained when the power is turned off): 1.
Auto Ramping the mA Output Auto ramping gives the ability to continuously apply a varying current stimulus from the meter to a transmitter, while hands remain free to test the response of the transmitter. Select either sourcing or simulating by choosing the SOURCE or SIMULATE jacks. n. Loop Power Supply Mode The Loop Power Supply Mode can be used for powering up a process instrument (transmitter). While in Loop Power Mode, the meter acts like a battery. The process instrument regulates the current.
o. RS-232C interface Push button code Demonstration software is provided with the DMM. The program is written for windows using MFC. For you own applications, consult the following; 1. Specification Baud rate Parity Data length Stop bit 19200 baud none 8 bit 1 bit ref2 is the sub display value on the right lower part of the LCD. ex)“1 DCV 12.345 mV HIGH 10.000 11.000 crlf” Output and Input of all data are ASCII String.
REC OFF Deactivates Record mode COMP ON ref1 ref2 39 Activates COMP.(If value is input on the meter uses these as high & low limit of compare) COMP OFF Deactivates COMP mode HOLD ON Activates HOLD mode HOLD OFF Deactivates HOLD mode SKEY f Indicates status of the function f is REL, REC, COMP, HOLD, RANGE. DMM STOP DMM GO Set the RS-232C to stop mode. Set the RS-232C to start mode.
F. MAINTENANCE 1. Battery Replacement: The DMM 196 will display AT when the 9 volt battery needs replacement. Battery replaced as following: G. TROUBLE SHOOTING GUIDE Problem Does not power up • Dead or defective battery • Broken wire from battery snap to PCB a. Disconnect and remove all test leads from live circuit and from DMM 196. b. Remove DMM 196 from protective boot. c. Remove the three screws from battery cover of back d. Remove old batteries and replace with new batteries. e.
196 Specifications ±0.05% Basic DCV Accuracy Function Range Resolution DCV 50mV 500mV 5V 50V 500V 1000V 0.001mV 0.01mV 0.0001V 0.001V 0.01V 0.1V ACV 5V 50V 500V 750V 0.0001V 0.001V 0.01V 0.1V DCA/ACA 5mA 50mA 500mA 1A 0.0001mA 0.001mA 0.01mA 0.0001A OHM 500Ω 5kΩ 50kΩ 500kΩ 5MΩ 50MΩ 0.1Ω 0.0001kΩ 0.001kΩ 0.01kΩ 0.0001MΩ 0.001MΩ Current out 0~24mA 0.001mA Frequency 500Hz 5KHz 50KHz 500KHz 0.01Hz 0.0001KHz 0.001KHz 0.01KHz Diode Test Products International, Inc. 9615 SW Allen Blvd., Ste.
