28 34980A Service Guide
2 Specifications
AC Specifications ±(% of reading + % of range)
DMM accuracy ± (% of reading + % of range). Includes measurement error, switching error
[1]
,
and transducer conversion error
.
[1]
One hour warm-up and a fixed configuration with slow AC filter, sine wave input, and 6½ digits.
Temperature within ±5 °C of temperature at calibration (Tcal between 18-28 °C).
[2]
90 minute warm-up and a fixed configuration and 6½ digits. Temperature within ±1 °C of temperature
at calibration (Tcal between 18-28 °C).
[3]
Relative to calibration standards
[4]
20% over range on all ranges except 300VDC and AC ranges and 1 ADC and AC current ranges
[5]
For sine wave input > 5% of range. For inputs from 1% to 5% of range and < 50 kHz add 0.1% of range
additional error. For AC filter slow.
[6]
Typically 30% of reading error at 1 MHz, limited to 1 x 10
8
volt-hertz
[7]
Input > 100 mV. For 10 mV inputs multiply % of reading error x 10. For 1 second aperture (6½ digits).
[8]
Specified only for inputs > 10 mA. For AC filter slow.
Function Range
[4]
Frequency 24 hour
[2,3]
Tcal ± 1 °C
90 days
Tcal ± 5 °C
1 year
Tcal ± 1 °C
Temperature
coefficient
Tcal ± 5
°C
True RMS
AC voltage
[5]
100.0000 mV to
100.0000 V
300.0000 V
3Hz-5Hz
5Hz-10Hz
10Hz-20kHz
20kHz-50kHz
50kHz-100kHz
100kHz-300kHz
[6]
3Hz-5Hz
5Hz-10Hz
10Hz-20kHz
20kHz-50kHz
50kHz-100kHz
100kHz-300kHz
[6]
1.00 + 0.03
0.35 + 0.03
0.04 + 0.03
0.10 + 0.05
0.55 + 0.08
4.00 + 0.50
1.00 + 0.05
0.35 + 0.05
0.04 + 0.05
0.10 + 0.10
0.55 + 0.20
4.00 + 1.25
1.00 + 0.04
0.35 + 0.04
0.05 + 0.04
0.11 + 0.05
0.60 + 0.08
4.00 + 0.50
1.00 + 0.08
0.35 + 0.08
0.05 + 0.08
0.11 + 0.12
0.60 + 0.20
4.00 + 1.25
1.00 + 0.04
0.35 + 0.04
0.06 + 0.04
0.12 + 0.05
0.60 + 0.08
4.00 + 0.50
1.00 + 0.08
0.35 + 0.08
0.06 + 0.08
0.12 + 0.12
0.60 + 0.20
4.00 + 1.25
0.100 + 0.004
0.035 + 0.004
0.005 + 0.004
0.011 + 0.005
0.060 + 0.008
0.20 + 0.02
0.100 + 0.008
0.035 + 0.008
0.005 + 0.008
0.011 + 0.012
0.060 + 0.020
0.20 + 0.05
Frequency and
period
[7]
100mV to 300V 3Hz-5Hz
5Hz-10Hz
10Hz-40Hz
40Hz-300kHz
0.10
0.05
0.03
0.006
0.10
0.05
0.03
0.01
0.10
0.05
0.03
0.01
0.005
0.005
0.001
0.001
True RMS AC
current
(34921A only)
10.00000 mA
and
[5]
1.0 A
100.0000 mA
[8]
3Hz-5Hz
5Hz-10Hz
10Hz-5kHz
3Hz-5Hz
5Hz-10Hz
10Hz-5kHz
1.00 + 0.04
0.30 + 0.04
0.10 + 0.04
1.00 + 0.5
0.30 + 0.5
0.10 + 0.5
1.00 + 0.04
0.30 + 0.04
0.10 + 0.04
1.00 + 0.5
0.30 + 0.5
0.10 + 0.5
1.00 + 0.04
0.30 + 0.04
0.10 + 0.04
1.00 + 0.5
0.30 + 0.5
0.10 + 0.5
0.100 + 0.006
0.035 + 0.006
0.015 + 0.006
0.100 + 0.006
0.035 + 0.006
0.015 + 0.006