3
Types of probes
Passive probes
The most widely used type of
oscilloscope probe is the “passive
probe.” Passive probes are also
the most rugged and economical.
There are no active components
such as transistors or amplifiers
in the probe, and therefore
passive probes do not need to
be powered.
Passive probes classifications
1:1 10:1 100:1 or 1000:1 Resistive divider
passive probe passive probe passive probe passive probe
Features A low capacitance • The most widely used • Additional attenuation • Highest-bandwidth
coax cable with a BNC scope probe type; for use with passive probe for
connector on one end provided standard with higher-amplitude measuring high-frequency,
and a probe on the other most <1-GHz signals low-impedance circuit
oscilloscopes • Large attenuation • Must be used with an
• Gives lower input requires a high-gain oscilloscope’s 50 Ω input
capacitance and higher amplifier on the scope
bandwidth than the
1:1 probe
When to use For viewing small For viewing up to ~300 V For viewing up to High-frequency,
signals (<1 V) 15 kVdc high voltage low-impedance (<50 Ω)
digital circuit
When not to use For probing For achieving >600 MHz For making floating For probing high-amplitude,
high-frequency signal system bandwidth (ungrounded) measurement high-impedance signal
Typical bandwidth Up to 25 MHz Up to 600 MHz Up to 250 MHz Up to 6 GHz
Agilent models 10070C, 1162A 10073C, 10074C, 10076A, N2771A 54006A, 1163A
1160/1/3/4/5A, N2862/3A
Passive probe characteristics
Cable Typical probe Compensates Max Input
Model Length Attenuation bandwidth oscilloscope input Voltage Recommended oscilloscopes
10070C 1.5 m 1:1 20 MHz High Z 400 Vpk 3000, 5000, 6000, 7000, 8000, 54600 Series
1162A 1.5 m 1:1 25 MHz 1 MΩ 300 Vpk 54800 or 8000
10073C 1.5 m 10:1 500 MHz 1 MΩ, 6-15 pF 400 Vpk 5000 Series (500 MHz)
6000 Series (300 MHz-1 GHz), 7000,
Series 5464x, 54830 and 8000 series
10074C 1.5 m 10:1 150 MHz 1 MΩ, 9-17 pF 400 Vpk 6000 Series (100 MHz), 5462x
1160A 1.5 m 10:1 500 MHz 1 MΩ, 6-9 pF 300 Vpk 54810/15/20/25A
1161A 1.5 m 10:1 500 MHz 1 MΩ, 12-14 pF 300 Vpk 54845A/B, 54846A/B
1163A 1.5 m 10:1 1.5 GHz 50 Ω 10 Vpk 54800, 7000, 8000, 80000 or 90000 Series
1164A 2 m 10:1 500 MHz 1 MΩ, 6-9 pF 300 Vpk 54810/15/20/25A
1165A 1.5 m 10:1 600 MHz 1 MΩ, 12-14 pF 300 Vpk 54830, 6000, 7000 or 8000 Series
N2862A 1.2 m 10:1 150 MHz 1 MΩ, 5-30 pF 300 Vpk 3000 Series
N2863A 1.2 m 10:1 300 MHz 1 MΩ, 5-30 pF 300 Vpk 3000, 5000 Series (100, 300 MHz)
54006A 1.2 m 10:1 (500 Ω) 6 GHz 50 Ω 20 Vpk 80000, 90000, 5484x,5485x
or 20:1 (1 kΩ)
10076A 1.5 m 100:1 250 MHz 1 MΩ, 7-20 pF 4 kV CAT I 3000, 5000, 6000, 7000, 8000 Series
1 kV CAT II
N2771A 2 m 1000:1 50 MHz 1 MΩ, 6-20 pF DC: 15 kV, 3000, 5000, 6000, 7000, 8000 Series
AC: 10 kVms, Peak 30 kV
(249 páginas)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentários a estes Manuais