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N2800A/1A/2A/3A Probe Amplifiers Characteristics
The characteristics listed in
N2800A/1A/2A/3A probe amplifiers.
Table 10 InfiniiMax III Probe Amplifier Characteristics (Sheet 1 of 2)
Feature
DC Input Resistance
Input Resistance ( >10 KHz) R
Input Voltage Range
(Differential or Single
Ended)
Maximum Input Power
Input Common Mode Range
DC Attenuation Ratio
Offset Range (for probing a
single-ended signal)
Input Referred Noise
Spectral Density
Input Referred Noise
Example
InfiniiMax III Series Probes User's Guide
With 450 W Probe Heads
(N5439A, N5445A, N5441A,
N2838A, N2836A, MX0109A,
N2848A)
R
= 50 kW ± 2% each input to
se
ground
R
= 100 kW ± 2%
diff
R
= 25 kW ± 2%
cm
= 500 W ± 2% each input to
se
ground
R
= 1 kW
diff
R
= 250 W
cm
1.6 Vpp, ± 0.8 Vp mains isolated
(HD2&3 < –38 dbc),
2.5 Vpp, ± 1.25 Vp mains
isolated
HD2&3 < –34 dbc)
N/A
± 12 VDC,
± 1.25 V > 250 Hz
mains isolated
6:1
±16 V
23.9 nV/rt (Hz)
4 mV
with 28 GHz probe
rms
head and 30 GHz probe amp
Performance Specifications / Characteristics
Table 10
are mainly determined by the
InfiniiMax III Probe Amplifier
With 200 W Probe Heads
(N5447A ZIF tip with N5439A
ZIF probe head)
R
= 50 kW ± 2% each input
se
to ground
R
= 100 kW ± 2%
diff
R
= 25 kW ± 2%
cm
R
= 500 W ± 2% each input
se
to ground
R
= 1 kW
diff
R
= 250 W
cm
0.8 Vpp, ± 0.4 Vp mains
isolated
(HD2&3 < –38 dbc),
1.6 Vpp, ± 0.8 Vp mains
isolated
(HD2&3 < –34 dbc)
N/A
± 6 VDC to 250 Hz,
± 0.65 V > 250 Hz
mains isolated
3:1
±8 V
12.0 nV/rt (Hz)
2 mV
with 28 GHz probe
rms
head and 30 GHz probe amp
With N5444A 2.92 mm / 3.5
mm / SMA Probe Head
55 W to V
term
50 W to 0.901 * V
term
1.6 Vpp, ± 0.8 Vp mains
isolated
(HD2&3 < –38 dbc),
2.5 Vpp, ± 1.25 Vp mains
isolated
(HD2&3 < –34 dbc)
125 mW calculated with the
following equation for each
input:
(
rms
V
V
(
)
–
P
=
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
in
term
max
55
± 6 VDC to 250 Hz,
± 1.25 V > 250 Hz
without violating max input
power
6:1
±6 V without violating
maximum input power
23.9 nV/rt (Hz)
4 mV
rms
4
2
)
65
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