THURLBY THANDAR INSTRUMENTS ACCURACY (Main Measurement Functions)

THURLBY THANDAR INSTRUMENTS ACCURACY (Main Measurement Functions)
THURLBY THANDAR INSTRUMENTS
1705 Dual Measurement Bench Multimeter
TTi
1705 TRUE RMS PROGRAMMABLE MULTIMETER
mV ac
All inputs 1kV Cat.I
, 600V Cat.I
Imax. to
dB
Hold
Null
Shift
T-Hold
Print
Ω Null
Manual Log
Local
Vdc
Vac
Ω
Hz
AC
Pow er
O perate
DUAL DISPLAY
DUAL MEASUREMENT
THURLBY THANDAR INSTRUMENTS
Run
Addr
EDIT
Baud
Cancel
Clr
Esc
Rcl Logger Clr
Select
2nd
(2nd Functions Auto only)
Range
Iac
µF
Auto / Man
ac+dc
+/ _
Range
Hz/µF
COM
mA
Change
Digit
ac+dc
Idc
V/Ω
1000V DC
750V AC
max.
Copy rdg
AUTO
Hz
C al
FUNCTION
Step
Digit
500mA
max.
FUSED
10A max.
FUSED
10A
Manual
Only
High performance 12,000 count autoranging DMM
● High accuracy and resolution: 0.04%, 10µV, 10mΩ
● Dual display and dual measurement technology
● Large and clear LCD (17mm digits) with annunciators
● True RMS ac functions; Frequency and Capacitance
● Wide range of computing functions, e.g. Ax + b
● 100 step data-logger, timed or triggered logging
● RS232 interface standard, GPIB interface optional
● Mains and battery operation as standard
●
High resolution & accuracy
The 1705 is a 4¼ digit meter with a scale length of 12,000 counts and a
resolution of 10µV, 10mΩ and 0.1µA.
Combined with a high basic dcV accuracy of 0.04%, it provides measurements that are an order of magnitude better than most hand-held DMMs.
Dual display system
The 1705 has both a main display and a secondary display. The two displays can be used for a variety of purposes:
To show the selected range in addition to the measurement units
(e.g. 100mA dc).
To display a measurement in two different units
(e.g. ac volts and dBm).
To display the result of a calculated function
(e.g. Ωs value and % deviation).
To measure and display two parameters of one signal
(e.g. ac and dc volts).
To measure and display two different signals
(e.g. ac volts and dc current).
Wide bandwidth ac with true RMS
The 1705 provides True RMS ac response which gives accurate measurements regardless of the waveform shape.
The wide bandwidth attenuator provides high accuracy within the audio
band and gives extended response to avoid errors when measuring
switching waveforms.
Measurements are normally ac coupled but, when required, the true RMS
value of the ac plus dc components can be shown.
Frequency & capacitance
The 1705 offers high accuracy frequency measurement (better than
0.01%) from 10Hz to 120kHz. It uses a reciprocal counting technique to
give up to 0.01Hz resolution at 10 readings per second.
The 1705 also incorporates capacitance measurement in four ranges up
to 120µF.
Wide range of Smart functions
The 1705 offers computing and datalogging functions as standard: dBs,
Ax+b, Limits, % deviation, Min-Max, Power, and a 100 reading
Data-logger
ACCURACY (Main Measurement Functions)
Accuracies apply for 1 year, 19oC to 25oC. Temperature coefficient outside these limits is <0.1 x quoted range accuracy per oC
DC Volts
Range
Accuracy
Resolution
Notes
100mV
1V
10V
100V
1000V
0.06% ± 3 dig.
0.04% ± 2 dig.
0.06% ± 2 dig.
0.06% ± 2 dig.
0.06% ± 2 dig.
10µV
100µV
1mV
10mV
100mV
Input impedance 10MΩ
Max. input 1kV DC or AC pk
NMR: >60dB @ 50/60Hz
CMR: >90dB @
DC/50Hz/60Hz
AC Volts (True RMS)
Range
Accuracy
45Hz 10kHz
10kHz 20kHz
1% ± 20 dig.
Range
Accuracy
Resolution
100Ω
0.1% ± 3 dig.
0.08% ± 2 dig.
0.09% ± 2 dig.
0.09% ± 2 dig.
0.12% ± 2 dig.
0.5% ± 2 dig.
0.5% ± 2 dig.
10mΩ
100mΩ
1Ω
10Ω
100Ω
1kΩ
10kΩ
Resolution
20kHz 50kHz
N/A
100mV
10µV
1V
1% ± 50 dig.
100µV
10V
1mV
0.2% ± 20
0.2% ± 20 1% ± 80 dig.
dig.
100V
10mV
dig.
1% ± 80 dig.
750V
N/A
100mV
1V, 10V, 100V ranges are <1dB down at 100kHz. AC accuracies apply
above 1,000 counts. Additional error at crest factor = 3 is typically 0.2%.
Input impedance = 1MΩ nominal. Max. input = 750V rms, 1kV pk.
1kΩ unbalanced CMR = >60dB at DC/50Hz/60Hz.
Resistance
1000Ω
10kΩ
100kΩ
1000kΩ
10MΩ
20MΩ
Notes
Max. input 300V DC or AC
rms
any range.
Max. open circuit voltage 4V
DC Current
Range
Accuracy
Resolution
Notes
1mA
100mA
0.1% ± 3 dig.
0.1% ± 3 dig.
0.1µA
10µA
Max. input 500mA
Voltage burden
<250mV
10A (up to 1A)
10A (up to 5A)
10A (up to 10A)
0.3% ± 3 dig.
1.0% ± 4 dig.
3% ± 10 dig.
1mA
1mA
1mA
Max. input 10A
Voltage burden
<500mV
AC Current (True RMS)
Range
Accuracy
Resolution
Notes
1mA
100mA
0.35% ± 20 dig.
0.35% ± 20 dig.
0.1µA
10µA
Max. input 500mA
Voltage burden
<250mV
10A (up to 1A) 0.5% ± 20 dig.
1mA
Max. input 10A
Voltage burden
10A (up to 5A) 1.2% ± 20 dig.
1mA
<500mV
10A (up to 10A) 3% ± 20 dig.
1mA
Accuracies apply over 45Hz to 10kHz for readings above 1000 counts.
Additional error at crest factor = 3 is typically 0.2%.
Note: Further information on this product is available on a
‘Supplemental’ data sheet.
Thurlby Thandar Instruments Ltd. operates a policy of continuous development
and reserves the right to alter specifications without prior notice.
Designed and built in the EEC by:
Full bus control via RS-232 or GPIB
The 1705 has an RS-232 interface as standard which can be used for remote control and read-back of measurements. A GPIB interface is available as an option.
Note: This is a faxable data sheet, a colour brochure is also available.
Thurlby Thandar Instruments Ltd.
Glebe Road, Huntingdon. Cambs. PE18 7DX England
Tel: +44 (0)1480 412451 Fax: +44 (0)1480 450409
e-mail: [email protected] Web: http://www.ttinst.co.uk
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