R&S ESH2-Z3 Preparation for Use and Operating Instructions
1156.6124.32 5 E-1
1 Preparation for Use and Operating Instructions
Preparation for Use
Insert the BNC plug of the Passive Voltage Probe R&S ESH2-Z3 into the RF input socket of the test
instrument. When using the an R&S Test Receiver, use the transducer table to enter the values of the
voltage division factor and activate the transducer factor. This causes the level indicated on the receiver
to increase by 30 dB corresponding to the voltage division factor (VDF) of the probe.
Operating Instructions
When measurements are made on circuits carrying AC supply voltages, make sure that the mains voltage
tip 8 (Order No.1156.5805.00) with the guard collar is plugged onto the probe. This is essential to prevent
from accidental slipping of the operator's hand.
Take care to ground the associated test instrument to the AC supply earth or, if this cannot be done,
ground the probe permanently to the protective earth (reference ground).
Depending on the measurement to be performed, the probe can be used with the following accessories:
1 hook tip
2 solder tip
4 spring tip
5 probe tip
6 attenuator ESH2Z31 (recommended accessory)
7 earth cable
3 voltage probe
8 mains voltage tip
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For disturbance voltage measurements in the frequency range 9 kHz to 30 MHz ground connection of
the probe is very important. It is to be established by connecting the earth cable 7 to the RF ground of
the item under test.
In compliance with the CISPR Publication 16-2-1, the ground lead should have a length as short as
possible (length of earth cable 7 190 mm). A rather short ground connection always proves desirable,
for otherwise this connection might pick up other disterbances, or testresults may be influenced by
magnetic fields.
For measurements where the RF ground requires a longer ground lead, the length l of the lead must
comply with CISPR Publication 16-2-1 i.e. it must be less than or equal to one tenth of the wavelength
of the frequency to be measured. Such a ground lead can be connected to the probe by means of the
earth cable 7 fitted with the banana plug (remove crocodile clamp).
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