creasing pressure beyond this point acceler-
ates probe tip wear and is not recommended.
Optimum probe tip
pressure
Probe tip travel
Pr
obe
tip
pressure
H
When the probe engages the second spring,
the probe sends a control signal to the 80A02
EOS/ESD protection module to enable the
signal path.
H
Do not scrape or otherwise drag the probe
tips on the board traces or DUT leads in an
attempt to improve signal contact. Make
sure that the contact area is clean before
using the probe.
H
Do not bend or shape the ground wire.
Improper bending of the wire can reduce
signal acquisition bandwidth or accuracy.
H
Cover the probe tip when not in use with the
vinyl probe cover.
H
When using the P80318 probe with auto-
mated probing stations, do not exceed
0.040 inches travel from initial DUT contact.
Removing/Installing the Ground Wire
Use knife tip to lift
end of wire
Step 1
Set probe tips to maximum gap
Pull out old
wire with
tweezers
Step
2
Use tweezers to hold the new
wire. Insert the wire end ~1/3
length into the small hole
Step 3
1
2
Step 4
Apply light pressure
against the wire to
keep in position
Pivot wire to position it on top of the support block.
Then use flat blade end of adjustment tool to push
wire down between block and probe tip.
Step 5
Push end of wire down
into hole. Insert screw
after wire is positioned
Ground wire is under tension during
installation and can easily spring away
Clamping the Probe for Fixtured Probing
Clamp
zone
Specifications
Table 1: Electrical
Characteristic
Specification
Probe impedance
50
Ω
±
1.5
Ω
, single ended,
each polarity.
Probe delay
1 ns typical from the female
SMA connector end to the
probe tip.
Attenuation
1X
Risetime, probe head
and cable
19.4 ps or better, one-way
transit, differential drive, with
minimum probe tip spacing (for
a 100 ps window with 50%
threshold crossing at center of
screen).
Bandwidth, probe head
and cable, calculated
18 GHz or better, using above
risetime calculation and
assuming 0.35 product of
risetime and bandwidth.
Maximum voltage input
±
5.0 V (DC + AC
p--p
)
RF input connector
Precision 26 GHz SMA female
connector
Control signal connector
type
Audio mono phone mini-jack
Table 2: Environmental mechanics
Characteristic
Specification
Probe dimensions
Length
127.0 mm (5.0 in)
Height
33.0 mm (1.30 in)
Width
28.0 mm (1.10 in)
Weight (probe only)
0.075 kg (0.165 lbs)
Altitude
Operating
3,000 m (9,843 ft)
Non-operating
12,190 m (40,000 ft)
Ambient temperature
Operating
--15
_
C to +55
_
C
(+5
_
F to +131
_
F)
Non-operating
--62
_
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.)
