Tektronix P6910, Instruction Manual

Page: 38 / 48

Reference
Load models
Load models are important electrical considerations when working with the
P6910 probe.
The low frequency model is typically adequate for rise and fall times of 1 ns
or greater in a typical 25
Ω source impedance environment (50 Ω runs with a
pass-through connection). For source impedance outside this range, and/or rise
and fall times less than 1 ns, use the high frequency model to determine if a
signi
fi cant difference is obtained in the modeling result.
The following electrical model displays a single podlet load model of the probe.
(See Figure 14.)
Figure 14: Single podlet load model
Speci fi cations
The following tables list the electrical and environmental speci fi cations for the
P6910 probe.
The electrical speci fi cations apply when the probe is connected between a
compatible logic analyzer and a SUT. Refer to the Tektronix Logic Analyzer Series
Product Speci fi cations & Performance Veri fi cation Technical Reference Manual
(available on the TLA Documentation CD or downloadable from the Tektronix
Web site) for a complete list of system and module speci
fi cations. The probes are
designed to meet Tektronix standard 062-2847-00 class 5.
Table 7: Mechanical and electrical speci fi cations
Characteristic Description
Threshold accuracy ±(35 mV ±1% of setting)
Input resistance
20 k Ω ±1%
Input capacitance <1.0 pF 1
Minimum digital signal swing 300 mV single-ended
Maximum nondestructive input signal to
probe ±15 V
Delay from probe tip to input connector 7.70 ns ±80 ps
24 P6910 General Purpose Probe Instruction Manual