PICO PicoConnect 900 Guia Del Usuario página 5

User's Guide
CAUTION
Consider the maximum rated voltage of the connected instrument after the
division ratio of the probe. A further connectorized attenuator can be inserted if
necessary.
When connecting the AC-coupled probes to a large DC bias, the probe will draw a
transient charging current. To prevent damage to a fragile connected instrument
or test node, be aware that the instrument input will see a voltage transient
equal to the DC bias after the probe division ratio. The table indicates peak
values and time constants.
PicoConnect
model
RF, microwave and pulse probes
911
912
913
914
915
916
Gigabit probes
921
922
923
924
925
926
CAUTION
To prevent puncture or scratching of the skin, fit the supplied protective cap
over the test pins when not in use. In the case of a skin puncture, seek medical
advice and dispose of the test pins as contaminated sharps.
Grounding
WARNING
Never connect the ground pins to, or allow them to touch, any electrical potential
other than ground. To prevent personal injury or death, use a voltmeter to
check that there is no significant AC or DC voltage between the probe ground
and the point to which you intend to connect it. Similarly if using the TA263 or
TA264 high-flex unsleeved coaxial cable with the probe, do not allow the cable to
contact any electrical node or potential other than ground.
DO274-4
Test node DC
current
1.0 mA/V DC
2.3 mA/V DC
4.3 mA/V DC
1.9 mA/V DC
4.0 mA/V DC
4.5 mA/V DC
Copyright © 2017 Pico Technology Ltd. All rights reserved.
PicoConnect 900 Series Probes
Maximum instrument
voltage (DC)
0.05 V/V DC
0.10 V/V DC
0.20 V/V DC
0.05 V/V DC
0.10 V/V DC
0.20 V/V DC
Duration
(RC time constant)
7 µs
continuous
3 µs
continuous
2 µs
continuous
4 µs
continuous
2 µs
continuous
1 µs
continuous
3