USER’S MANUAL. PROMAX-10
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Page 4
05/2004
CARRIER / NOISE RATIO MEASUREMENT
Measurement
Analogue channels
Ratio between carrier level and the channel's noise
level.
Digital channels
Ratio between the channel power and the noise
level. The frequency where noise is measured is
user definable in absolute or relative value. In the
relative mode, the unit takes as default frequency
offset the value BW/2 + 0.5 MHz.
Measurement range
(5)
Analogue channels
40-50 dB for input level between 60 and 70 dBµV.
> 50 dB for input level > 70 dB
µ
V.
Digital channels
> 30 dB for input level > 60 dB
µ
V.
Accuracy
±
2 dB (45 – 862 MHz)
±
3 dB (5 – 45 MHz)
CSO & CTB INTERMODULATION PRODUCTS MEASUREMENT
(ANALOGUE CHANNELS)
CSO
Ratio of the peak level of the video carrier to the
peak of the distortion products of second order
beat. Measured at four frequencies user definable.
Measuring frequencies
User definable from -2.50 to -0.50 MHz and from
0.50 to 2.50 MHz. (Default values -1.50, -0.50, 0.50
and 1.50 MHz).
CTB
Ratio of the peak level of the video carrier to the
peak of the distortion products of third order beat.
Measured at the carrier frequency or, approximately
mode, in a channel previously defined by the user.
DATALOGGER FUNCTION
Max. number of loggers
55
Number of channels/logger
140
Measurements
Analogue channels
Level, C/N and V/A.
Digital channels
Channel power and MER. (BER for data dumping to
printer or transfer to PC).
SCAN
Span
Variable: 10, 30, 100, 300 MHz and full band (from
5 to 862 MHz, according to the channel plan).
Power detection
Forward band (45 to 862 MHz).
Reference level
Variable from 60 to 120 dBµV in 10 dB steps.
TILT
Indication
Numerical and by level bar.
Analysed band
Forward (45 to 862 MHz) or Return path (5 to 100
MHz).
Number of pilots
4 per band.
Pilots frequency
From 5 to 862 MHz.
Pilots resolution
10 kHz.
