Tektronix P7240 24 P7240 4 GHz 5XAct ive Probe UserManual, Table4: Typical electrical characteristics (Cont.), Figure 9: Typicalinput im pedance and phase versus frequency

Appendix A: Specifications
24 P7240 4 GHz 5XAct ive Probe UserManual
Table4: Typical electrical characteristics (Cont.)
Input Resistance 20 kΩat DC (See Figure 9)
Input Capacitance 0.85 pF @100 MHz
OffsetR ange --5.0V to +5.0 V
DC OffsetDrift 150 V/°C or lessat output of probe
0.75 mV/°C or lessdisplayed on screen with
TekConnectinterface
DC Offset Scale Accuracy ±2% (of 5x actualprobe gain)
DC VoltageMeasurement Accuracy,
referred to input
±(2% of input + (2% of offset)+ 50 mV
output offset+ 20 mV linearity error)
Delay Time 5.43 ns ±0.2 ns
System Noise 300Vrms or less at output of probe with
probe tip grounded
90°
54°
36°
72°
18°
-- 1 8 °
-- 3 6 °
-- 5 4 °
-- 7 2 °
-- 9 0 °
Phase(degrees)
0
20K
18K
16K
14K
12K
10K
8K
6K
4K
2K
Magnuitude(ohms)
1M 10M 100 M 1G 5G
Frequency
Magnitude
Phase
0°
Figure 9: Typicalinput im pedance and phase versus frequency