Copyright Tektronix, Inc.
P8018 Handheld TDR Probe
Instructions
071-1318-00
www.tektronix.com
Safety Summary
To avoid potential hazards, use this product only
as specified.
To avoid fire or personal injury
Ground the product. This product is indirectly
grounded through the grounding conductor of the
mainframe power cord. To avoid electric shock,
the grounding conductor must be connected to
earth ground. Before making connections to the
input or output terminals of the product, ensure
that the product is properly grounded.
Connect and disconnect properly. Do not connect or
disconnect probes or test leads while they are
connected to a voltage source.
Observe all terminal ratings. To avoid fire or shock
hazard, observe all ratings and markings on the
product. Consult the host instrument documenta-
tion for further ratings information before making
connections to the host instrument.
Do not apply a potential to any terminal, including
the common terminal, that exceeds the maximum
rating of that terminal.
Do not operate with suspected failures. If you
suspect there is damage to this product, have it
inspected by qualified service personnel.
Do not operate in wet/damp conditions.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry.
Safety symbols on the product
CAUTION
Refer to Product Manual
Product Description
The P8018 is a handheld passive probe with a
50 Ωinput impedance. The P8018 comes standard
with a one meter SMA male-to-male cable
assembly that interfaces with an 80A02 EOS/ESD
Protection Module or other SMA connectable
input.
Figure 1: P8018 handheld TDR probe
The P8018 probe is especially designed to be used
with the Tektronix 80A02 EOS/ESD Protection
Module. Together, they protect sensitive
instrument-input stages, such as the sampling
bridge of Tektronix electrical sampling modules,
from electro-overstress (EOS) and electro static
discharge (ESD) damage due to static charges
stored in the device under test (DUT).The P8018
probe can also be used as a stand-alone,
high-bandwidth probe that is usable with any
SMA connectable instrument.
The P8018 provides a unique pressure-actuating
probe tip that switches between DUT
static-discharging protective mode and
engaged-measurement mode.
Using the Probe
Connector Care
Use extra care when attaching or removing the
cable from SMA connectors. Turn only the nut,
not the cable. When attaching the cable, align the
connectors carefully before turning the nut. Use
light finger pressure to make this initial
connection. Then tighten the nut lightly with a
wrench. Ideally, the SMA connectors should be
tightened to 56 N-cm (5 in-lb) with a torque
wrench.
Probing Technique
The probe tip and grounding clip are designed to
probe printed circuit boards (PCB) that
incorporate ground reference points next to the
signal measurement point. This is to allow the
probe tip to be inserted into a PCB through-hole
test point while the ground clip contacts the
ground reference point.
To achieve the specified bandwidth, the ground
clip must be trimmed to the shortest length
possible for probing the PCB. See Figure 2 for
proper probing technique and ground clip
trimming.
Ground clip
contact trimmed as
short as possible
Probe tip through PCB
test point via hole
Ground clip
installed on
probe
PCB
Figure 2: PCB probing and grounding technique
These instructions describe the operation of the
P8018 probe connected to a Tektronix 80A02
protection module which is then connected to an
instrument to be protected such as a Tektronix
80E04 or SD24 electrical TDR sampling module.
Specifications
Table 1: Environmental and mechanical
Characteristic Specification
Probe dimensions
Length 125 mm (4.94 in)
Height 27 mm (1.06in)
Width 16 mm (0.64 in)
Weight (probe only) 0.054 kg (0.12 lbs)
Altitude
Operating 3,048 m (10,000 ft)
Non-operating 12,190 m (40,000 ft)
Ambient temperature
Operating --15 _C to +55 _C(+5_Fto
+131 _F)
Non-operating -- 6 2 _C to +85 _C(--80_F
to +185 _F)
Humidity
Operating 20% to 80% relative
humidity with a maximum
wet bulb temperature of
+29 _C at or below +40 _C,
non-condensing. (Upper
limit derates to 45% relative
humidity at +40 _C.)
Non-operating 5% to 90% relative humidity
with a maximum wet bulb
temperature of +29 _Cator
below +60 _C,
non-condensing. (Upper
limit derates to 20% relative
humidity at +60 _C.)
*P071131800*
071131800
