Keysight InfiniiMax III+ Series, User Manual

Page: 67 / 162

Using InfiniiMax III+ Probe Heads
2
InfiniiMax III+ Series Probes User’s Guide 67
Connecting a QuickTip to the DUT
Use the following tips when soldering the QuickTips to your DUT:
• Orient the QuickTip vertically as shown in
Figure 54 on page 66.
• Solder the four leads to vias or surfaces.
• When soldering to a via, always trim the lead close to the via’s underside.
• If a lead is to be soldered to a surface and
not a via, make a stronger solder joint
by bending the end of the lead 90°. For signal leads, bend the wire
approximately half way between the resistor and the end of the wire. Bend the
ground leads at about the same distance.
CAUTION
Do not replace or repair the N2849A QuickTip’s resistor or ground leads. Attempting to
do so will damage the ability of the tip to mate with the N2848A probe head.
NOTE
The N2848A does not include any N2849A QuickTips. The N2849A must be ordered
separately.
NOTE
Before connecting the QuickTip head to the tip, use the tack-putty (N5439-65201) included
with the N2848A QuickTip probe head or the N2787A 3D probe positioner for securing the
probe amplifier to a rigid body near the DUT.
NOTE
For performance plots, refer to Chapter 6 , “Performance Plots.
CAUTION
Always mechanically strain-relieve the QuickTip head before using to protect both
your probe accessories and DUT from damage. Refer to “Strain Relieving the
Probe Heads" on page 71.
NOTE
Resistor and wire leads on the QuickTip are factory trimmed to the proper length for use.
Adding wire length to the tip of the mini-axial lead resistors or to the ground leads will
degrade the performance of the probe.
NOTE
Soldering the ground wires is not required when making differential or single-ended (+ or –
leads) measurements.
CAUTION
Be careful not to damage the tip wires when handling the QuickTips. Wires can be
carefully reshaped with tweezers or fingers if necessary.
CAUTION
The QuickTips are very fragile. They must be manufactured in this way in order to meet
the high-performance, high bandwidth applications they are intended for. Be
extremely careful when handling.