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Page 2 

 

General Specifications 

 

Characteristics  

Description 

Display  

LCD 3 ½ with 2000 counts, maximum display count of 1999 

Over-range Indication 

“1” in the Most Significant Digit (MSD)  

Operation Frequency of 

Ω

 current 

820Hz to 1.6kHz at approx. 2mA. 

Earth Resistance Range 

20

Ω

/200

Ω

/2000

Ω

 

Resistance resolution  

0.00 - 19.99 (0.01

Ω

00.0 - 199.9 (0.1

Ω

000 – 1999 (1

Ω

 or .001K

Ω

Earth Resistance Accuracy 

±

(2% r 2 digits) or

±

 0.1

Ω

 

Max Earth Voltage  

0-200V AC, 40-500Hz 

Earth Voltage Accuracy 

±

 (1% r 2 digits) 

Power on/off 

Switch only / No auto power off mode 

Low Battery Indicator: 

 Symbol indicates low battery voltage 

Data Hold Indicator 

 Symbol indicates data hold  

Power  

8 x 1.5V AA Batteries (Alkaline preferred) 

Applicable standards 

IEC/EN 61010-1: (CAT III 200V) pollution degree2 

Dimensions 

8.3”H x 8.3”W x 4.0”D  

Weight: 

Approximately 3.0 lbs. (1361g) including battery 

Storage Environment: 

32

°

F to 122

°

F at <80% relative humidity 

Operating Environment: 
        Relative Humidity 

32

°

F to 104

°

80% Relative Humidity  

Accessories included 

Hard Case, Test Lead Set (red-33m, yellow- 33m, green 5m) 

Red 1m dual input jack to alligator clip adapter lead,  
2 Auxiliary earth spikes, and Instruction Manual 

 
 

RANGES and ACCURACY SPECIFICATION 
Measurement Characteristics 

(All at 75°F 

±

 41°F, < 80% R.H.)  Measurement accuracy is expressed as 

±

(% r digits) in the resistance 

and voltage functions 
 

RESISTANCE: 

Range Measuring 

Range 

Resolution Accuracy 

20

Ω

 0.00

Ω

 - 19.99

Ω

 0.01

Ω

 

±

(2%  2 digits)

1

  

200

Ω

 00.0

Ω

 - 199.9

Ω

 0.1

Ω

 

±

(2% r 2 digits)  

2000 

Ω

 000

Ω

 - 1999

Ω

 

1

Ω

 or 0.001K

Ω

   

±

(2% r 2 digits)  

Error is 

±

 2 digits or 

±

 0.1

Ω

, whichever is greater. 

Operation frequency of current is 820Hz to 1.6kHz at approx. 2mA. 
 

EARTH VOLTAGE POTENTIAL: 

Range Measuring 

Range 

Resolution Accuracy 

0-200V AC 

00.0 – 199.9V  

.1mV 

±

 1.0% 

±

 2digits 

 

 
Form number TM61796   

Rev 2 May 2008 

Summary of Contents for 61-796

Page 1: ...following information Precautions and safety information Specifications Performance test procedure Calibration and calibration adjustment procedure Basic maintenance Disassembly Troubleshooting Spare Parts list Form number TM61796 Revision 2 Date May 2008 Form number TM61796 Rev 2 May 2008 ...

Page 2: ...nd Voltage Potential Specifications 2 Required Standards and Equipment 3 Performance Verifications 3 Battery Test 3 Frequency Test 3 Resistance Test 3 AC Voltage Test 4 Disassembly and Setup For Calibration 4 Calibration 4 Procedure 4 5 Calibration Verification Test 5 Calibration Adjustment Locations 6 Component Layout 7 Troubleshooting 8 Spare Parts List 9 Form number TM61796 Rev 2 May 2008 ...

Page 3: ...is manual a Warning identifies conditions and actions that pose hazard s to the user a Caution identifies conditions and actions that may damage the meter or the test instruments The Symbols The symbols used on the meter and in this manual are explained in Table A Table A Symbols Meter Safety Symbol Description Battery Cautionary or important information in manual Danger Risk of electrical shock D...

Page 4: ...0 D Weight Approximately 3 0 lbs 1361g including battery Storage Environment 32 F to 122 F at 80 relative humidity Operating Environment Relative Humidity 32 F to 104 F 80 Relative Humidity Accessories included Hard Case Test Lead Set red 33m yellow 33m green 5m Red 1m dual input jack to alligator clip adapter lead 2 Auxiliary earth spikes and Instruction Manual RANGES and ACCURACY SPECIFICATION M...

Page 5: ...librated meter to ensure the battery pack measures a minimum of 11 5V DC If the battery pack measures under 11 5V DC replace all 8 x 1 5V batteries before beginning the performance test Frequency Test Turn the function switch to 20Ω range Connect a frequency counter to terminals E and P Press and lock the TEST button The output frequency should be 820Hz 15Hz 805Hz 835Hz Resistance Test Connect the...

Page 6: ...ion Qualified personnel should only perform calibration procedures described in this manual During this calibration it will be necessary to have the electronics of the instrument exposed A potential for hazardous voltage can be present during this procedure Use extreme caution ACV Adjustment refer to Figure 2 Turn the function switch to EARTH VOLTAGE position Press and lock the TEST button The dis...

Page 7: ...nnect E P and C to the 100Ω standard resistor adjust VR4 for a reading of 100 0Ω 0 2 Select 2000Ω stage Short E P and C together check that the display reads 000 2 Connect E P and C to the 1000Ω standard resistor adjust VR5 for a reading of 1000Ω 2 Ω Calibration Verification Test The maximum allowable error just after calibration should not exceed those listed in Table 3 Table 3 Ω Verification Tes...

Page 8: ...Page 6 Calibration Adjustment Locations VR6 ADJUST ACV VR1 ADJUST Hz VR3 ADJUST 10Ω VR4 ADJUST 100Ω VR5 ADJUST 1000Ω Figure 2 Form number TM61796 Rev 2 May 2008 ...

Page 9: ...Page 7 Figure 3 Form number TM61796 Rev 2 May 2008 ...

Page 10: ... or CON2 broken Replace U21 IC 5106Q or CON2 Power transformer broken Replace power transformer PT 1505 Hz no reading C6 C10 broken Replace C6 CPE 220uF C10 CDM 1uF C21 or Z2 broken Replace C21 CPE 22uF or Z2 TVS 6 5CA Fuse broken Replace Fuse ACV no reading U14 broken Replace U14 IC 062 ACV reading abnormal Diode broken Replace Diode ACV 0 no test Z2 broken Replace Z2 TVS 6 5CA Power transformer ...

Page 11: ...ate 3 2 UP cover 1 3 PCB 2 4 Function switch 1 5 Test button 1 6 Hold button 1 7 0 Ω adjust 1 8 Housing case 1 9 Protection cover 4 10 Battery 8 11 Battery case 1 12 Handle 1 13 Latch 1 Others Test leads 1 Kit Simplified measurement probe 1 Auxiliary earth spikes 2 Shoulder belt 1 Instruction manual 1 ...

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