Atec Rohde-Schwarz_FSL Series - Manual (Page 18)

R&S ® FSL Spectrum Analyzer Version 09.00, December 2008 18
Measurements
Spectrum active
channel/signal spectrum
vision carrier frequency and level absolute; display of
deviation from nominal values Carriers
one or two sound carriers frequency and level relative to vision
carrier; display of deviation from nominal
values
carrier to noise; peak level of vision carrier relative to noise in selectable bandwidth;
noise floor correction can be activated
channel switched ON
in-service mode, measurement next to
signal
channel switched OFF off-service mode
C/N
channel switched ON, no scrambling quiet-line mode, measurement during
unmodulated line
composite second order (beat); peak level of vision carrier relative to second-order
intermodulation product; noise floor correction can be activated
channel switched OFF
off-service mode
CSO
channel switched ON, no scrambling,
unmodulated video line present quiet-line mode, measurement during
unmodulated line
CTB composite triple beat; channel switched OFF; peak level of vision carrier relative to
third-order intermodulation product; noise floor correction can be activated
Video scope no scrambling, SWT = 25 µs to 100 µs,
offset = –50 µs to +50 µs luminance signal of a selectable video line
versus time
Vision modulation white-reference test line, no scrambling modulation depth and residual carrier of
vision carrier
Hum no scrambling modulation depth of unwanted AM,
modulation frequency <1 kHz
Analog TV measurement ranges and measurement uncertainty
Standards All specified tolerances refer to a modulated TV signal in line with the PAL B/G
standard. FM carriers are at 5.5 MHz and 5.742 MHz relative to the vision carrier, each
modulated with 3 kHz. Vision carrier frequency range: 10 MHz < f
≤ 1.5 GHz.
Measurements
Carriers
Vision carrier power, absolute S/N (vision carrier) > 16 dB typ. <0.5 dB
Vision carrier frequency offset │frequency offset│ < 10 kHz ±(vision carrier frequency × reference
uncertainty + 0.5 Hz)
Sound carrier 1 power, relative S/N (sound carrier 1) > 16 dB typ. <0.7 dB
Intercarrier 1 frequency offset │intercarrier 1 frequency offset│ < 100 Hz
S/N (sound carrier 1) > 25 dB ±(intercarrier 1 frequency offset ×
reference uncertainty + 0.5 Hz)
Sound carrier 2 power, relative S/N (sound carrier 2) > 16 dB typ. <0.7 dB
Intercarrier 2 frequency offset │intercarrier 2 frequency offset│ < 100 Hz
S/N (sound carrier 2) > 25 dB ±(intercarrier 2 frequency offset ×
reference uncertainty + 0.5 Hz)
C/N channel with vision carrier peak power –2 dBm; noise-reference bandwidth = 4 MHz;
carrier and noise with 0 dB attenuation
C/N < 54 dB, typ. <1 dB preamp = OFF
C/N < 59 dB, typ. <3 dB
C/N < 69 dB, typ. <1 dB
C/N (off-service)
preamp = ON for noise measurement
C/N < 74 dB, typ. <3 dB