Repair – Amprobe DM78B Digital-Multimeter User Manual
Page 9
5
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: 100
μ
V in 320mV rg.
Accuracy:
±
2.0%rdg. +2dgt (exc. 3.2V rg:
±
1.0%rdg +2dgt)
Input impedance: 320mV rg: >100M
Ω
; 3.2V rg: 11M
Ω
; all other:
10M
Ω
.
AC Voltage
Ranges: 3.2, 32, 320, 600V.
Resolution: 1mV in 3.2V range
Accuracy:
±
4.0%rdg. +5dgt
Input impedance: 3.2V rg: 11M
Ω
; all others 10M
Ω
.
Resistance
Ranges: 320
Ω
, 3.2, 32, 320k
Ω
, 3.2, 32 M
Ω
Resolution: 100m
Ω
in 320
Ω
rg
Accuracy: 320
Ω
rg:
±
2.0%rdg. +4dgt; 3.2, 32, 320k
Ω
rgs:
±
2.0%rdg.
+2dgt; 3.2M
Ω
rg:
±
6.0%rdg. +2dgt, 32M
Ω
rgs:
±
10.0%rdg. +2dgt
Test Current (range/A): 320
Ω
/<0.7mA; 3.2k
Ω
/<0.13mA; 32k
Ω
/<13
μ
A,
320K
Ω
/1.3
μ
A; 3.2M
Ω
/<0.13
μ
A; 32M
Ω
/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: 320
Ω
Indication: at approx R
≤
35
Ω
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
®
Test Tools.
In-Warranty Repairs and Replacement – All Countries