Rover ST2 - Page 43

pag. 43
ST2 User’s Manual
Satellite Mode
fi g. 16.2 ASTRA transponder spectrum with the Max Hold Function enabled
continues: SPECTRUM MEASUREMENTS: SPECT
Press the key and use the key to choose a fi eld to be modifi ed
Use keys and to modify the displayed value.
SPECTRUM SPAN: sweep width in
MHz : 50, 100, 200, 500, FULL
TRANSPONDER NUMBER
(ordered by frequency value)
TRANSPONDER
CENTRE FREQUENCY
A
UTOMATIC REFERENCE LE-
VEL: dB scale reference
value; may be varied ma-
nually
Press the
16.1 Measured Signal Spectrum analysis
16.2 Measured Signal Spectrum analysis with Max Hold
key again to enable the signal max hold feature.
SPECTRUN ANALYSIS
CURVE: 5 dB division in
quasi Real Time
CLOSED LOCK =
Locked signal
OPEN LOCK =
un-locked signal
POWER/LEVEL: FREQUENCY MARKER
LEVEL/POWER VALUE IN dBuV
FREQUENCY MARKER:
0,1 MHz resolution
LEVEL MARKER:
0,1 dB resolution
MAX HOLD FUNCTION:
Max Hold function enabled
MAX HOLD TRACE: peak
memory value reached by
the measured signal
fi g. 16.1 ASTRA transponder spectrum with a 500 MHz SPAN.