Manual FCKL 1528 Page 1
1. Introduction, Description
The interference measuring receiver FCKL 1528 is a fundamental tool to measure in-
terference voltage, interference field strength, interference current, antenna voltages and
so on with detectors according to quasi-peak, peak and average.
In contrast to spectrum analysers or communication receivers with added "interference
measurement" the FCKL 1528
was especially designed for the requirements of
interference measurement.
It combines the advantages of classic analogue front panel operated receivers such as
Clarity and comprehensibility of the system
Handiness
Reliability
Reading by meter or xy-recording
with the
advantages
of computer control by efficient and cheap PCs such as
Menu guided software
High dynamic range using AUTORANGE
Introduction of masks
Introduction of antennas
Value added graphics by lin/log-conversion and zoom
Easy documentation.
In both operation modes the special requirements of interference measuring are covered.
Measuring pulses as slow as single click is possible according to the standards.
In addition
VARISCAN
permits the safe and time saving recording of any spectrum in the
"slow" detector modes CISPR-Quasi-Peak, CISPR-Average and CISPR-RMS by adjusting
the scan speed to signals recognised in advance.
The result is
continuous recording
without using the peak detector to decide.
A second thought was made to protect the receiver from dangerous overload when used
with a L.I.S.N.. Some powerful devices under test are able to deliver high power to the
receiver. Potential damages are avoided or restricted to relatively cheap components. For
this reason a 10-watt-power attenuator with 10 dB attenuation can be switched into the
signal path directly behind the r. f.-connector.
If used with a remote control Schwarzbeck L.I.S.N. (NSLK 812x rcfm, rcps) the system is
protected by a complete safety net in the receiver, the L.I.S.N. and the software, even if
the components are connected to different mains and are switched on and off at different
times.