Consonics CyberTek Qualifier, Руководство пользователя

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Qualifier Supplement
3
VSWR Light (Red)
This light activates when there is an improperly matched antenna. This will only occur when
you try to transmit a signal. To correct, the technician must cycle the power and make an
adjustment to the antenna.
Temperature Light (Red)
This light will activate when the internal temperature exceeds the operating limits. The
device will shutdown in this condition and will not function until an acceptable temperature
range has been reached.
Qualifier Receiver
The Qualifier includes the same functions that are present
in a ComSonics Installer Digital unit. The device also has a
Qualifier Mode that is activated by pressing the “Q” button
on the device. Once in this mode the following keys are
active:
“Q” Key
Pressing this key when in Qualifier Mode enables the
Command Link to a qualifying transmitter. The device will
command the transmitter to send a burst of carriers in order
to make a measurement. If the Qualifier unit detects the
carriers, it will measure the signal strength and display that
measurement relative to the internal threshold set. For
example if the signal is 3 dB below the threshold, -3.0 dB
will be displayed on the unit.
F1 Key (Automatic or Manual)
This key selects between using an Automatic
Threshold (“A”) or Manual Threshold (“M”).
This determines which threshold will be used
when making the qualifying measurements.
Automatic – At the factory the device
threshold will be initialized to a default factory
value (12 dBmV). Each subsequent
measurement will be used in a rolling average to tailor the unit to the cable system’s typical
noise level. The threshold can be reset back to the factory default at any time by pressing the
F2 Key .
d
d
dB
B
B