Technical data
N2780/81/82/83 User’s and Service Guide 19
Characteristics (Non-warranted)
N2780A/B N2781A/B N2782A/B N2783A/B
Bandwidth DC to 2 MHz (-3 dB)
(Typical
characteristic shown
in Figure 1)
DC to 10 MHz (-3
dB)
(Typical
characteristic shown
in Figure 6)
DC to 50 MHz (-3
dB)
(Typical
characteristic shown
in Figure 11)
DC to 100 MHz (-3
dB) (Typical
characteristic shown
in Figure 16)
Rise time 175 ns or less 35 ns or less 7 ns or less 3.5 ns or less
Maximum current
(continuous) rms
500 A rms (Derating
according to
frequency shown in
Figure 2)
150 A rms (Derating
according to
frequency shown in
Figure 7)
30 A rms (Derating
according to
frequency shown in
Figure 12)
30 A rms (Derating
according to
frequency shown in
Figure 17)
Maximum peak
current value
(non-continuous)
700 A peak 300 A peak
500 A peak; at pulse
width
£ 30 ms
50 A peak 50 A peak
Output voltage rate 0.01 V/A (100:1) 0.01 V/A (100:1) 0.1 V/A (10:1) 0.1 V/A (10:1)
Noise (for 20 MHz band
measuring instrument)
Equivalent to 25 mA
rms or less
Equivalent to 25 mA
rms or less
Equivalent to 2.5 mA
rms or less
Equivalent to 2.5 mA
rms or less
Input impedance (Typical
characteristics shown
in Figure 3)
(Typical
characteristics shown
in Figure 8)
(Typical
characteristics shown
in Figure 13)
(Typical
characteristics shown
in Figure 18)
Temperature coefficient for
sensitivity (within a range
of 0
o
C to 40
o
C or 32
o
F to
104
o
F)
± 2 % or less ± 2 % or less ± 2 % or less ± 2 % or less
Effect of external magnetic
fields (in a DC or 60 Hz,
400 A/m magnetic field)
Equivalent to a
maximum of 800 mA
Equivalent to a
maximum of 150 mA
Equivalent to a
maximum of 20 mA
Equivalent to a
maximum of 5 mA
Maximum rated power
(with rated current)
7.2 VA 5.5 VA 5.6 VA 5.3 VA
Lowest Measurable
Current
*
(at 3%accuracy of DC
current with the
oscilloscope set to 1
mV/div and high resolution
mode on.)
* Oscilloscope set to 1 mV/div and 20 MHz or 25 MHz bandwidth limited.
20 mA 20 mA 5 mA 5 mA
Rated supply voltage DC ± 12 V ± 0.5V DC ± 12 V ± 1 V DC ± 12 V ± 0.5 V DC ± 12 V ± 0.5V
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