SARK
SARK
SARK
SARK-
-
-
-110
110
110
110
User’s Manual
Rev 1.0 March 15
th
, 2013
- 4 -
© EA4FRB 2011-2013
1 Introduction
The SARK-110 Antenna Analyser is a pocket size instrument providing fast and
accurate measurement of the vector impedance, VSWR, vector reflection
coefficient, return loss, and R-L-C (as series or parallel equivalent circuits).
Typical applications include checking and tuning antennas, impedance matching,
component test, cable fault location, measuring coaxial cable losses, and cutting
coaxial cables to precise electrical lengths.
The SARK-110 features a Direct Digital Synthesis (DDS) generator with a range of
0.1 to 230 MHz and a frequency resolution of 1 Hz. The instrument has full vector
measurement capability and accurately resolves the resistive, capacitive and
inductive components of a load. The measurement reference plane is automatic
adjusted via the Open/Short/Load calibration standard to enable the accurate
impedance measurements at the end of an intermediate coaxial cable.
The user interface based on a color display has been designed to be intuitive and
easy to use. The graphical impedance displays provide a quick view of the
antenna impedance characteristics on a user selected sweep range. This includes
the graphical plot of two user selectable parameters in a rectangular diagram or
the complex reflection coefficient in Smith chart form. Two markers, either user
positionable or in an automatic tracking mode, help to speed-up the
measurements.
Besides it is included a single frequency measurement mode which presents the
complete impedance parameters at a user selectable frequency and a graphical
representation of the equivalent circuit.
