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P6249 4 GHz 5X Active Probe Instruction Manual
Table 3: Typical electrical characteristics (Cont.)
Offset Range –5.0 V to +5.0 V
DC Offset Drift
150 mV/°C or less at output of probe
0.75 mV/°C or less displayed on screen with
TEKPROBE interface
DC Offset Scale Accuracy ±2% (of 5X actual probe gain)
Delay Time 5.05 ns ±0.2 ns
System Noise
300 mV rms or less at output of probe with
probe tip grounded
90°
50°
30°
70°
110°
10°
–10°
–30°
–50°
–70°
–90°
–110°
Phase (degrees)
0
20 K
22 K
18 K
16 K
14 K
12 K
10 K
8 K
6 K
4 K
2 K
Magnuitude (ohms)
1 M 10 M 100 M 1 G 5 G
Frequency
Magnitude
Phase
Figure 8: Typical input impedance and phase versus frequency