Datasheet

8 PMK Produktkatalog 2008 © Copyright PMK 2008
8
Microline Probes 2.5 mm
PML Series
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Small size
ø 2.5 mm at probe tip
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IC Contacting System
for 0.5 mm to 1.27 mm pitch
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Interchangeable Spring Contact Tip
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Coaxial Design
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Low Input Capacitance
Probes are a vital yet critical link in the measurement chain. Just imagine
you would have to measure your circuit without a probe: the answer is
you just cannot do it.
It is often underestimated that both oscilloscope and probe together
define the quality of the measured results. Errors caused by badly com-
pensated, imprecise or generally unfit probes influence the measurement
because the scope can only display what the probe communicates to the
input. Therefore every measurement not only depends on the class and
the capability of the instrument but also on the performance of the whole
measuring outfit including the probe whereby passive probes are standard
with scopes with up to 500 MHz bandwidth. Usually probes are bound to
be replaced several times during the lifespan of the scope and so while
looking for the right replacement probe one should also take its abilities
and features into account.
PMK presents a universal 10:1 miniature probe for oscilloscopes with up to
500 MHz bandwidth. As all PMK probes the PML 711 features CeramCore
TM
technology. This means that the entire probe core is made of a high qua-
lity ceramic hybrid. Pure coaxial design and laser trimmed resistors ensure
highest signal fidelity and reading accuracy along the signal path. With a
maximum input voltage of 300 V CAT II this divider is equally suitable for
service and development environments. The probe is also available with
Readout BNC connector to be automatically recognised as 10:1 divider
by scopes that feature a sense ring to detect probe attenuation such as
Agilent, LeCroy, Tektronix or Yokogawa.
The compact design of this probe with its 2.5 mm housing diameter at
the tip provides better visibility to the DUT (device under test) in dense
SMT circuits than conventional 5 mm housings. Due to the remarkably
low input capacitance the signal source is only loaded by 9.5 pF. Less
load to the measurement circuit can only be achieved with active probes.
Especially when measuring signals with fast rise times often the probe‘s
adaption to the source signal plays an important role. Long ground leads
found on most conventional adaptions bring additional inductance and
resonances into the setup which will result in false or inaccurate readings.
The innovative IC contacting system consisting of five different IC
adapters ranging from 1.27 down to 0.5 mm pitch and the PCB adapter kit
offer an ideal solution for short circuit-proof, reproducible measurements.
As you would expect the divider is shipped with PMKs signature spring-
loaded tips. In total there are 16 different accessories included in the scope
of delivery with the PML 711 offering adaptive solutions for almost every
probing demand.
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PML High Z Probes
Model PML 211-RO PML 311-RO PML 701-RO PML 711A-RO (***) PML 721-RO
Order-No. 855-211-001 855-311-001 855-701-00E 855-711-A01 855-721-004
Attenuation 10:1 10:1 1:1 10:1 20:1
Input Impedance 10 MΩ 10 MΩ – 10 MΩ 20 MΩ
10 pF 10 pF 39 pF (+ Oszi.) 9.5 pF 5.6 pF
Input Coupling of the Measuring Instrument 1 MΩ AC/DC 1 MΩ AC/DC 1 MΩ AC/DC 1 MΩ AC/DC 1 MΩ AC/DC
System Bandwidth (-3 dB) 200 MHz 350 MHz 38 MHz (****) 500 MHz 500 MHz
Risetime (10% - 90 %) 1.4 nsec 1 nsec 9 nsec 700 psec 700 psec
Compensation Range (*) 10 – 25 pF 10 – 25 pF – 10 – 25 pF 7 – 20 pF
Rated Voltage 300 V CAT II 300 V CAT II 55 V CAT II 300 V CAT II 300 V CAT II
Pollution Degree 2 2 2 2 2
Safety Standard (IEC / EN) 61010-031 61010-031 61010-031 61010-031 61010-31
Cable Length 1.3 m 1.3 m 1.3 m (**) 1.3 m (**) 1.4 m (**)
(*) Other compensation ranges on request
(**) Further standard cable length 2 m, other cable lengths on request
(***) For current oscilloscope models of different manufacturers we offer performance optimized models.
Please refer to our „probe to scope“ reference chart on our website
(****) at 15 pF input capacitance of the measuring instrument