Operation; Connection Of The Probe (Example As 100) To The Dut - LANGER EMV-Technik A100 User Manual

LANGER
DE-01728 Bannewitz
mail@langer-emv.de
EMV-Technik
www.langer-emv.com

3 Operation

3.1 Connection of the probe (example AS 100) to the DUT

Figure 8 AS 100 pin assignment
Attention: Only connect and disconnect an AS XXX sensor when it is not subjected to any
interference.
The connector between the optical fibre probe and the DUT has to be extremely short to ensure
satisfactory measurements of burst and ESD under radiated RF interference conditions. Common
prods and clips are too big.
The optical fibre probe has to be connected to the circuit board or IC via a socket to ensure the
requisite small-scale set-up. Because the socket, rather than the probe itself, is soldered to the
pins or lines, the measuring point can be quickly changed by plugging the probe into other sockets.
- To ensure the socket doesn't move, glue it to the circuit board or IC of the DUT. Connect the
socket to the DUT via a CuL wire according to the sensor's pin assignment.
- Power is supplied via the DUT or a battery.
To avoid measuring errors pay attention:
- To position the AS XXX close to the DUT's GND areas.
- To solder the socket directly to the line to be measured with short connecting wires (10...20 mm).
- That the power is supplied by immediate signal environment via the pins or block capacitor of the
relevant IC.
- To connect the GND of the socket and the GND of the module via a short connector (10...20 mm)
when power is supplied by a battery. Position a block capacitor (approx. 100 nF) at the connect-
ing point.
Basic rule: The closer the sensor (with its housing and GND connection) is positioned to the GND
system of the DUT, the higher its disturbance immunity will be and the fewer disturbances will
occur.
A100 / A200 / A300
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