Amprobe AM91RS Digital-Multimeter User Manual

USER'SUSER'SMANUALMANUALAM91RSAMPROBEA United Dominion Company

9Hz, % + Hz functionsDefaults at Hz. Press SELECT button momentarily to select % + Hz.Note: Unlike the AC + Hz function, this high resolution Hz funct

10ΩΩ Resistance, nS + GΩΩ Conductance, Continuity functionsDefault at Ω. Press SELECT button momentarily to select nS + GΩ Conductance forresistanc

11 Capacitance, Diode test functionDefault at . Press SELECT button momentarily to select Diode test function.CAUTIONDischarge capacitors before

12µµA, mA, and A Current functionsDefault at DC. Press SELECT button momentarily to select AC. Press SELECT buttonmomentarily again to select AC + Hz

1340000 counts high resolution slow modePress the 40000 button momentarily to enter the 4-3/4 digit high resolution slow mode.The digital display upda

14before disconnecting the test leads.

15CREST capture modePress and hold the CREST button for one second or more to activate CREST(Instantaneous peak hold) mode to capture voltage or curre

16Note: Manual ranging feature is not available in Hz function.

17 SORTTM modePress and hold the SORT button for one second or more to activate SORTTM mode. TheLCD annunciators “S” & “MAX-MIN AVG” turn on. SORT

18

11) SAFETYThis manual contains information and warnings that must be followed for operating themeter safely and maintaining the meter in a safe operat

19Relative modesPress the .%.U button momentarily to enter the Relative mode . This allows themeter to set the displaying reading as the reference v

20feature.Input warningThe meter beeps as well as displays “InErr” to warn the user against possible damage tothe meter due to improper connections to

21terminal will then be open circuit. The series fusible resistors and the spark gapsshould then be replaced by qualified technician. Refer to the LIM

226) SPECIFICATIONSGENERAL SPECIFICATIONSDisplay: 3-3/4 digits 4000 counts or 4-3/4 digits 40000 counts selectable (5 digits 99999 counts for Hz), and

23ELECTRICAL SPECIFICATIONSAccuracy is ±(% reading digits + number of digits) or otherwise specified, at 73 F±41F (23±5) & less than 75% R.H. T

24AC Adapter10 counts per 1 mVACAccuracy : Same as AC 400.0mV rangeInput Impedance : 1000MΩ, 70pF nominalTemperature coefficient : 0.1 X (Specified ac

2540.00mA 1.0%+4d** 3.3mV/mA400.0mA 0.8%+3d 3.3mV/mA4.000A 1.0%+4d** 0.03V/A10.00A*** 0.8%+3d 0.03V/A40Hz  300Hz400.0µA1.5%+4d**0.15mV/µA4000µA1.0%+3

26DC CurrentRANGE Accuracy Burden Voltage 400.0µA0.4% + 4d0.15mV/µA4000µA0.2% + 2d0.15mV/µA40.00mA 0.4% + 4d 3.3mV/mA400.0mA 0.2% + 3d 3.3mV/mA4.000A

27Duty CycleRANGE Accuracy0.1%  99.9% 0.5d/kHz2dInput Frequency : 50Hz  250kHz; 5V Logic Family with + & - pulse width2µsUpdate Rate : 1.2 per

28dBmAt 600Ω, -5.74dBm to 54.25dBm,Accuracy : ±0.25dB + 2d (@40Hz20kHz)Selectable reference impedance of 4, 8, 16, 32, 50, 75, 93, 110, 125, 135, 1

2TERMS IN THIS MANUALWARNING identifies conditions and actions that could result in serious injury or evendeath to the user.CAUTION identifies condit

LIMITED WARRANTYAMPROBE warrants to the original product purchaser that each product it manufactureswill be free from defects in material and workmans

3Fuse2) ELECTROMAGNETIC COMPATIBILITY (EMC)The instrument meets EN55022(1994/A1; 1995/Class B) and EN50082-1(1992)

43) PRODUCT DESCRIPTIONPanel Illustration1) 4-3/4 digits 40000 counts LCDdisplay2) Push-buttons for specialfunctions & features3) Selector to turn

5Analog bar-graphThe analog bar graph provides a visual indication of measurement like a traditional analogmeter needle. It is excellent in detecting

64) OPERATIONACV, ACV + Hz, & dBm + Hz functionsDefaults at ACV. Press SELECT button momentarily to select ACV + Hz. PressSELECT button momentaril

7DCV, DC + AC V functionsDefaults at DC. Press SELECT button momentarily to select DC + AC. Analog bar-graph will be disabled in the DC + AC mode.Hold

8DC, AC, AC + Hz mV functionsDefaults at DC. Press SELECT button momentarily to select AC. Press SELECT buttonmomentarily again to select AC + Hz.DC,