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INSTRUCTION MANUAL
LI-1100C
LINE IMPEDANCE STABILIZATION NETWORK
19121 El T oro R d ● S il vera d o, Ca lifo rnia 926 76 ● (94 9) 459 - 9600 ● com - p ower.com
REV022717
CAUTION
Due to the high level of earth leakage current, the device cannot be
connected to any power source protected by either a g
round fault circuit
interrupter (GFCI) circuit breaker
or residual current devices (RCDs).
The power source must be protected by a circuit breaker with a current
rating which is greater than or equal to the rating of the LISN.
5.3.2 Grounding bolt (GND)
The threaded bolt with hex nut marked 'GND' are found on both front and
back panel of the LISN. This bolt is used for Protective grounding
connections. In addition to this, the un-painted bottom surface of the LISN
should be bonded directly to an earth referenced ground plane for
effective RF reference ground. In cases where no ground plane is
available, a mains isolating transformer shall be used.
Please refer Safety instructions for more information on importance of
grounding. The grounding instructions are to be followed at all times.
5.3.3 EUT power port
The LI-1100C has a Superior Electric Shrouded socket receptacle to power
the equipment under test. The LISN is shipped with the matching shrouded
pin plug for making the connections to EUT power cable.
5.3.4 EMI measurement Port
The LI-1100C provides a
50 Ω
N-Type (female) connector to connecting the
Spectrum analyzer or EMI receiver for making conducted noise
measurements. The shielding connection of the N connector shield is
connected to the housing of the LISN and thus to ground.
Note: CISPR recommends the use of 10 dB attenuator at the output of the
LISN measurement port. Also, as the input circuitry of EMI receivers and
spectrum analyzers are extremely sensitive; it is highly recommended to use
transient limiter in line with the cable connecting the measurement port to
the measuring equipment in order to protect the input circuits from
damage by high voltage transients. Com-Power transient limiters also
incorporate both a low pass and high pass filter to attenuate out of band
signals, as well as a 10 dB attenuation pad. Both, the 10 dB attenuator and
the transient limiter are available with Com-Power.
5.3.5 Input 6 Vdc
The 6 VDC input is a standard 5.5 mm x 2.1 mm dc power jack to connect
power adapter for the Fan.
Distributed by: Reliant EMC LLC, +1 408 916
‐
5750, [email protected], www.reliantemc.com
