User's Manual

175, 177, & 179
Calibration Information
6
Accuracy ±( [ % of Reading ] + [ Counts ] )
Function Range
1
Resolution
Model 175 Model 177 Model 179
DC Amps
5
60.00 mA
400.0 mA
6
6.000 A
10.00 A
7
0.01 mA
0.1 mA
0.001 A
0.01 A
1.0 % + 3 1.0 % + 3 1.0 % + 3
Hz
(AC- or DC-
coupled,
V or A
2,3,4
input )
99.99 Hz
999.9 Hz
9.999 kHz
99.99 kHz
0.01 Hz
0.1 Hz
0.001 kHz
0.01 kHz
0.1 % + 1 0.1 % + 1 0.1 % + 1
Temperature -40 °C to +400 °C
-40 °F to +752 °F
0.1 °C
0.1 °F
NA NA
1 % + 10
8
1 % + 18
8
MIN MAX
AVG
For DC functions, accuracy is the specified accuracy of the measurement function ±12 counts for changes longer than
350 ms in duration.
For AC functions, accuracy is the specified accuracy of the measurement function ±40 counts for changes longer than
900 ms in duration.
1. All AC voltage and AC current ranges are specified from 5 % of range to 100 % of range.
2. Frequency is specified from 2 Hz to 99.99 kHz in Volts and from 2 Hz to 30 kHz in Amps.
3. For serial number 83911000 and below, and 83911241 to 84060000,frequencies <10 kHz are not specified in 600 mV ac, 60 mA ac, and 6 A
ac ranges. Noise at frequencies below 4.5 Hz and amplitude below 600 mV may exceed the frequency specification. For Serial numbers
83911001 to 83911240 and 84060001 and above, this note does not apply.
4. Below 2 Hz, the display shows zero Hz.
5. Amps input burden voltage (typical): 400 mA input 2 mV/A, 10 A input 37 mV/A.
6. 400.0 ma accuracy specified up to 600 mA overload.
7. >10 A unspecified.
8. Does not include error of the thermocouple probe.
Function
Overload
Protection
1
Input
Impedance
(Nominal)
Common Mode Rejection
Ratio
(1 kΩ Unbalanced)
Normal Mode
Rejection
Volts AC 1000 V rms >10 MΩ <100 pF >60 dB @ dc, 50 Hz or 60 Hz
Volts DC 1000 V rms >10 MΩ <100 pF >120 dB @ dc, 50 Hz or 60 Hz >60 dB @ 50 Hz or 60 Hz
mV/T 1000 V rms
2
>10 MΩ <100 pF >120 dB @ dc, 50 Hz or 60 Hz >60 dB @ 50 Hz or 60 Hz
Open Circuit
Test Voltage
Full Scale Voltage To:
600 kΩ 50 MΩ
Short Circuit
Current
Ohms/Continuity 1000 V rms
2
<8.0 V dc <660 mV dc <4.6 V dc <1.1 mA
Continuity/Diode
test
1000 V rms
2
<8.0 V dc 2.4 V dc <1.1 mA
1. 10
7
V-Hz maximum.
2. For circuits <0.3 A short circuit. 660 V for high energy circuits.
Function Overload Protection Overload
mA Fused, 440 mA, 1000 V FAST Fuse 600 mA overload for 2 minutes maximum
A Fused, 11 A, 1000 V FAST Fuse 20 A overload for 30 seconds maximum