User Manual

6
Specifications PMT221A
Specifications that are not defined to be guaranteed are typical and are published as general information to the
user. The instrument should have warmed-up for at least 20 minutes and the environmental conditions do not
exceed the probe `s specified limits.
Electrical Specifications
Attenuation Ratio (switchable)
(1)
1:1 10:1 ± 2 % at DC (at 10:1)
Voltage Coefficient - 0.0025 %/V (typical)
Probe Bandwidth
(2)
30 MHz 250 MHz (-3 dB)
Probe Risetime 12 nsec 1.4 nsec (10 % - 90 %) (typical)
Maximum Rated Input Voltage
(3)
Measurement Categorie I: - 400 V rms
1250 V transient overvoltage
Measurement Categorie II: 55 V rms CAT II 300 V rms CAT II
Pollution Degree 2
Voltage Derating
Note that the max. input voltage
rating of the probe decreases as
the frequency of the applied
signal increases.
(1) Connect to oscilloscope with a input impedance of 1 MΩ ± 1 %.
(2) at 15 pF input capacitance of the measuring instrument.
(3) As defined in IEC 61010-031. See definitions explained on page 4.
Typical voltage derating PMT221A (switched to 10:1)
Measurement Category I
0
100
200
300
400
0,1 1 10 100 1000
Frequency [MHz]
Amplitude AC rms [V]Sinus