Atec Aeroflex-6820A Series - Manual (Page 2)

Bandpass filter insertion loss measurement
Each detector is individually characterized for linearity and
frequency response to provide a measurement accuracy close to that
achieved with a power sensor. A range of autotesters with high direc-
tivity is available for return loss measurements.
Fault Location
Fault location software is standard on all 6820A series instruments.
Many modern communication systems rely on a coaxial or waveguide
feed between the transmitter and antenna. The fast fault location
facility of the 6820A can quickly locate the position of faults causing
poor return loss in the feed, which can seriously impact system per-
formance.
Measurement resolution and accuracy is assured by the use of a syn-
thesized source with up to 1601 measurement points.
Fault location measurement of a coaxial feed and antenna
Simplified User Interface
Integration of the source and scalar analyzer, and the built-in applica-
tions facility, makes operations faster and simpler. The operator uses
a single interface to set up any measurement. This saves time and is
easier than writing software to perform comprehensive network
measurements.
Eight softkeys give rapid access to all commonly used parameters.
Softkeys are shaped to inform the user of the action that the key will
perform, e.g. enter data, select from list, move to another menu or
immediate action. All commonly accessed functions are no more than
one level deep, so that the instrument operation is easily learned.
Applications Interface
An applications interface is built into the 6820A series which allows
the user to create their own measurement routines and guide the
operator through the test procedure. For example it can display on the
6820A screen how to set up the measurement, lead the operator
through a calibration, show where to connect the device under test
and then test the device’s performance against predefined limits. The
applications facility can reduce the incidence of operator error,
improve measurement repeatability, provide guidance to infrequent
users or simplify complex test procedures.
Color Display
A large TFT color display is fitted to the 6820A displaying up to four
measurements on two channels. Scalar measurements can be
displayed simultaneously on independent channels.
Dual channel display, showing wide band and narrow band fre-
quency sweeps
Comprehensive Markers
Up to eight markers are available. The marker menus provide the
tools that are most commonly used in each of the measurement
modes.
In scalar mode markers automatically calculate peak to peak ripple,
N-dB bandwidth, -1 dB bandwidth and find maximum and minimum
signal levels. This simplifies device characterization and reduces test
time.
For fault location measurements the next peak left/right feature
identifies the position and magnitude of each of the discontinuities
along the transmission line. The peak find softkey quickly locates the
biggest discontinuity on the line.
Fast Field Repair
6820A has a modular architecture with modules slotted onto a
common mother board. In the event of a module failure the instru-
ment can be repaired by module replacement to reduce instrument
downtime. Following a repair, software routines realign the replaced
module.