Repair - Amprobe DM78B Operator's Manual

Electrical Specifications
° ± °
(23 5 C, 80% RH Max)
Maximum input, all functions/ranges: 600VDC or AC rms.
DC Voltage
Ranges: 320mV, 3.2, 32, 320, 600V
Resolution: 100μV in 320mV rg.
Accuracy: ±2.0%rdg. +2dgt (exc. 3.2V rg: ±1.0%rdg +2dgt)
Input impedance: 320mV rg: >100MΩ; 3.2V rg: 11MΩ; all other:
10MΩ.
AC Voltage
Ranges: 3.2, 32, 320, 600V.
Resolution: 1mV in 3.2V range
Accuracy: ±4.0%rdg. +5dgt
Input impedance: 3.2V rg: 11MΩ; all others 10MΩ.
Resistance
Ranges: 320Ω, 3.2, 32, 320kΩ, 3.2, 32 MΩ
Resolution: 100mΩ in 320Ω rg
Accuracy: 320Ω rg: ±2.0%rdg. +4dgt; 3.2, 32, 320kΩ rgs: ±2.0%rdg.
+2dgt; 3.2MΩ rg: ±6.0%rdg. +2dgt, 32MΩ rgs: ±10.0%rdg. +2dgt
Test Current (range/A): 320Ω/<0.7mA; 3.2kΩ/<0.13mA; 32kΩ/<13μA,
320KΩ/1.3μA; 3.2MΩ/<0.13μA; 32MΩ/0.6mA(Vf=o.6V)
Diode Test
Range: 3.2V
Accuracy: ±1.0% rdg + 2 dgt
Test current: 0.6 mA (Vf=0.6V)
Continuity Check
Range: 320Ω
Indication: at approx R ≤35Ω
Test Current: 0.7mA
Specifications subject to change without notice.

Repair

All test tools returned for warranty or non-warranty repair or for
calibration should be accompanied by the following: your name,
company's name, address, telephone number, and proof of purchase.
Additionally, please include a brief description of the problem or the
service requested and include the test leads with the meter. Non-
warranty repair or replacement charges should be remitted in the form
of a check, a money order, credit card with expiration date, or a
purchase order made payable to Amprobe
In-Warranty Repairs and Replacement – All Countries
Test Tools.
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