Tektronix Thermometer P7240 Manuel d'utilisateur télécharger pdf (Page 34)

Appendix A: Specifications

P7240 4 GHz 5X Active Probe User Manual

Table 4: Typical electrical characteristics (Cont.)

Input Resistance

20 kΩ at DC (See Figure 9)

Input Capacitance 0.85 pF @100 MHz

Offset Range --5.0 V to +5.0 V

DC Offset Drift

150 V/°C or less at output of probe

0.75 mV/°C or less displayed on screen with

TekConnect interface

DC Offset Scale Accuracy ±2% (of 5x actual probe gain)

DC Voltage Measurement 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 V

rms

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)

20 K

18 K

16 K

14 K

12 K

10 K

Magnuitude (ohms)

1 M 10 M 100 M 1 G 5 G

Frequency

Magnitude

Phase

0°

Figure 9: Typical input impedance and phase versus frequency

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 45 46

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Tektronix Thermometer P7240 Manuel d'utilisateur Page 34

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