Active Probes

Active Probes contain an active element like a FET or a tube right at the tip of the probe. This allows to eliminate cable loading and create higher input impedances, most useful for high frequency probing.

For a list of all active Probes also see Active oscilloscope probes.

Model	Attenuation	Length		Input Loading		Bandwidth	Dynamic Range	Offset Range	Max. Voltage	Target Impedance	Power Source	Readout pin
				R	C
P80	1×	?	?	100 kΩ	14 pF	100 MHz	±0.2 V	N/A	150 V	93 Ω Diff.	Type 80 Plug-In	n/a
	2×			200 kΩ	7.8 pF		±0.4 V
	5×			500 kΩ	3.3 pF		±1 V
	10×			1 MΩ	2 pF		±2 V
	20×			2 MΩ	1.4 pF		±4 V
	50×			5 MΩ	3.7 pF		±10 V
	100×			10 MΩ	1.4 pF		±20 V
P6032	10x	1.8 m	6 ft	10 MΩ	3.6 pF	850 MHz	±1.5 V	N/A	1.5× Dyn. Range	50 Ω	4-pin 1S1 type	N
	20×				2.6 pF		±3 V
	50×				3 pF		±7.5 V
	100×				1.5 pF		±15 V
	200×				1.4 pF		±30 V
	500×				1.3 pF		±75 V
	1000×				1.3 pF		±150 V
P6201	100×	1.8 m	6 ft	1 MΩ	1.5 pF	1.1 GHz	±60 V	±200 V	200 V	50 Ω	7000 Series LEMO	Y
	10×			1 MΩ	1.5 pF		±6 V	±56 V	200 V
	1×			100 kΩ	3 pF		±0.6 V	±5.6 V	50 V
P6202	100×	2 m		10 MΩ	2 pF	500 MHz	±60 V	±200 V	200 V	50 Ω	dedicated power supply	Y
	10×						±6 V	±55 V	200 V
P6202A	100×	2 m		10 MΩ	2 pF	500 MHz	±60 V	±200 V	200 V	50 Ω	7000 Series LEMO	Y
	10×						±6 V	±55 V	200 V
P6203	10×	1.5 m	5 ft	10 kΩ	2 pF	1 GHz	±10 V	±10 V	40 V	50 Ω	Tekprobe BNC connector	n/a
P6204	10×	1.5 m	5 ft	10 MΩ	1.9 pF	1 GHz	±10 V	±15 V	40 V	50 Ω	Tekprobe BNC connector	n/a
P6205	10×	1.5 m	5 ft	1 MΩ	2 pF	750 MHz	±10 V	N/A	40 V	50 Ω	Tekprobe BNC connector	n/a
P6206	10×	?	?	1 MΩ	2 pF	1 GHz	?	?	40 V	50 Ω	Tekprobe SMA connector	n/a
P6207	10×	1 m		100 kΩ	0.4 pF	4 GHz	±4 V	±5 V	40 V	50 Ω	Tekprobe SMA connector	n/a
P6209	5×	?	?	20 kΩ	1 pF	4 GHz	±2 V	±5 V	40 V	50 Ω	Tekprobe SMA connector	n/a
P6217	10×	1.5 m	5 ft	100 kΩ	0.4 pF	4 GHz	±4 V	±5 V	40 V	50 Ω	Tekprobe BNC connector	n/a
P6230 [note 1]	10×	1.5 m	5 ft	450 Ω	1.6 pF	1.5 GHz	±5 V	±5 V	30 V	50 Ω	7000 Series LEMO	Y
P6231 [note 1]	10×	1.5 m	5 ft	450 Ω	1.6 pF	1.5 GHz	±5 V	±5 V	30 V	50 Ω	Tekprobe BNC connector	n/a
P6241	10×	1.3 m	4 ft	40 kΩ	0.5 pF	4 GHz	±4 V	±10 V	30 V	50 Ω	Tekprobe BNC connector	n/a
P6243	10×	1.3 m	4 ft	1 MΩ	1 pF	1 GHz	±8 V	N/A	15 V	50 Ω	Tekprobe BNC connector	n/a
P6249	5×	1.3 m	4 ft	20 kΩ	1.0 pF	4 GHz	±2 V	±5 V	30 V	50 Ω	Tekprobe BNC connector	n/a
P7240	5×	1.3 m	4 ft	20 kΩ	1.0 pF	4 GHz	±2 V	±5 V	30 V	50 Ω	TekConnect connector	n/a
P7260	5×	1.3 m	4 ft	20 kΩ	0.5 pF	6 GHz	±0.75 V	±5 V	30 V	50 Ω	TekConnect connector	n/a
	25×						±3 V

Notes

[note 1] These probes are active probes only for DC. For AC these probes are regular 50 Ω passive probes. For DC the load impedance is virtually connected to the offset voltage by means of an operational amplifier, so the DC loading can be tuned out for signals offset from 0V. They are listed here for completeness since Tektronix lists them as such in the Tektronix P6203 P6204 P6205 P6217 P6231 Catalog Specs (PDF).