Fluke 8060A Digital Multimeter
n Handheld, microcomputer-based 4½ digit
multimeter
n True-rms measurements for ac signals up to 100
n
n
n
n
n
kHz.
Frequency measurements up to 200 kHz.
Voltage measurements in dBm referenced to 600Ω
Ω
or in dB relative to an operator-selected reference
voltage.
Resistance measurements up to 300 MΩ
Ω.
Ability to store any input signal as an offset or
relative reference value.
All standard DMM measurement functions, such as
ac and dc volts and ac and dc current, as well as
resistance, conductance, continuity, and diode test.
n Discontinued, replaced by Fluke 189 (USD 379)
8060A - Funzionamento
n 4 bit CMOS microcomputer
? rileva lo stato dei switch impostati dall’utente
? invia i segnali di controllo al MAC
? legge lo stato dei registri del MAC
? pilota il display
n Measurement Acquisition Chip (MAC) - CMOS
? Conversione AD (doppia rampa)
? Contatore per la misura della frequenza
n 4.5 digit - autopolarity
n ADC Dual Slope Converter
n Single 9V battery
8060A - Block Diagram
8060A - AD Converter
n100 ms =
5/(50 Hz) =
6/(60 Hz)
nAuto Zero
Voltage measurement
10 MΩ
Ω imput divider --- “True RMS” (analog computation)
8060A - Specifications
Es. se leggo
125.00 mV
su F.S 200 mV
l’errore
massimo è
± (0.04% x 125.00
+ 0.02) =
± (0.05 + 0.02) =
± 0.07 mV
8060A - Specifications
8060 - Specifications
Frequency Measurement
n Schmitt trigger
n low f - time
measurement
n high f - frequency
n
n
measurement
Resolution 1/20000
Accuracy ±(0.05% + 1)
Current Measurement
n Current
shunt
? 0.1 Ω
? 1Ω
? 10 Ω
? 100 Ω
? 1000 Ω
8060A - Specifications
Resistance Measurement
n Vx/Vref =
Rx/Rref
? charge:
Rx
? discharge:
Rref
n Conductance
? charge:
?
Rref
discharge:
Rx
8060A - Specifications
Diode test:
Range 2V
Test current 1 mA
Agilent 34420A Nanovoltmeter
n 7 1/2 Digit resolution
n 100 pV/ 100 nΩ
Ω sensitivity
n 1.3 nVrms/8 nVpp noise
performance
n Built-in low noise 2 channel scanner
n direct SPRT, RTD, Thermistor and thermocouple
measurements
n selectable analog and digital filtering
n high stability current source to provide precise low level
resistance measurements (Standard, low power, voltage
limited for dry-circuit testing)
n Offset compensation to minimize thermal EMF errors
Specifications
Temperature and noise specifications
n Vpp noise ~ 6
Vrms noise
n (two-minute)
n accuracy -1digit
= time/10
Measurement characteristics
Voltage noise
n Medium B = 1 Hz
n Slow B ~ 0.5 Hz
Agilent 3458A Multimeter
n 3458A Digital Multimeter,
n 8.5 Digit
n Key Features and
n
Specifications
dc Volts
? 5 ranges: 0.1 V to 1000 V
? 8.5 to 4.5 digit resolution
? Up to 100 000
readings/sec (4.5 digits)
? Maximum sensitivity: 10
nV
? 0.6 ppm 24 hour accuracy
? 8 ppm (4 ppm optional) /
year
? voltage reference stability
n ac Volts
? 6 ranges: 10 mV to 1000 V
? 1 Hz to 10 MHz bandwidth
? Up to 50 readings/sec with
?
?
all readings to specified
accuracy
Choice of sampling or
analog true rms
techniques
100 ppm best accuracy
n Product Price
United States: Price for
3458A from USD 7,400.00
Agilent 3458A Multimeter
n Ohms
? 9 ranges: 10 to 1 G
? Two-wire and four-wire Ohms with
n Frequency and Period
? Voltage or current ranges
offset compensation
? Frequency: 1 Hz to 10 MHz
? Up to 50 000 readings/sec (5.5 digits)
? Period: 100 ns to 1 sec
? Maximum Sensitivity: 10 µ
? 0.01% accuracy
? 2.2 ppm 24 hour accuracy
? ac or dc coupled
n ac current
n
Maximum Speeds
? 5 ranges: 100 µA to 1 A
? 100000 readings/sec at 4.5
? 10 Hz to 100 kHz bandwidth
? Up to 50 reading s/sec
? 500 ppm 24 hour accuracy
n dc
?
?
?
?
current
8 ranges: 100 nA to 1 A
Up to 1350 readings/sec (5.5 digits)
Maximum sensitivity: 1pA
14 ppm 24 hour accuracy
digits (16 bits)
? 50000 readings/sec at 5.5
?
?
?
digits
6000 readings/sec at 6.5
digits
60 readings/sec at 7.5 digits
6 readings/sec at 8.5 digits