Martel Electronics DMC1400 - Manual (Page 100)

10. Specifications
All measurements apply at 23°C ± 5°C. unless specified otherwise.
Outside of this range the stability of the measurements is ±
0.005%of reading/°C.
Table 9: General Specifications
Operating Temperature -10°C to 50°
Storage Temperature -20°C to 70°C
Power 4 X AA batteries; Alkaline or optional rechargeable
Low battery warning Yes
Serial Communications Yes, ASCII
CE - EMC EN50082-1: 1992 and EN55022: 1994 Class B
Safety CSA C22.2 No. 1010.1: 1992
Table 10: DC Voltage Measurement/Source
Range Accuracy
(% of reading ± floor)
Read: Isolated(Upper Display) 0.000V- 30.000V 0.015% ± 2mV
Read: non-Isolated(Lower Display) 0.000V - 20.000V 0.015% ± 2mV
Source 0.000V - 20.000V 0.015% ± 2mV
Maximum current output in voltage ranges is 3mA with an output impedance of <= 1
W.
Table 11: DC mA Measurement/Source
Range Accuracy(% of reading
± floor)
Read: Isolated(Upper Display) 0.000mA - 24.000mA 0.015% ± 2
mA
Read: non-Isolated(Lower Display) 0.000mA - 24.000mA 0.015% ± 2
mA
Source 0.000mA - 24.000mA 0.015% ± 2
mA
Maximum load on mA source is 1000
W. Voltage input range on simulate mode 5V - 30V.
Table 12: Frequency Measurement/Source
Range Accuracy
(% of reading ± floor)
Read 2.0CPM - 600.0CPM 0.05% ± 0.1CPM
1.0Hz - 1000.0Hz 0.05% ± 0.1Hz
1.00KHz - 10.00KHz 0.05% ± 0.01KHz
Source 2.0CPM - 600.0CPM 0.05%
1.0Hz - 1000.0Hz 0.05%
1.00KHz - 10.00KHz 0.125%
Input voltage amplitude range on frequency is 1V to 20V zero based square wave only.Output amplitude
is adjustable from 1V to 20V, and is a square wave with 50% duty cycle.For output frequency, a slight
negative offset of approximately -0.1V is present to assure zero crossing.
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