Filter
Top Products
Specifications
2715 Spectrum Analyzer Service Manual
1-5
Table 1- 1: CATV Characteristics (Cont.)
Characteristic Description
Carrier Survey Absolute peak amplitude of each visual carrier measured and each associated aural
carrier level measured relative to the measured visual carrier for the selected
channels — characteristics are identical to t he frequency (visual and aural) and level
measurements (frequency is counted only if ACCURATE FREQUENCY AND AMPL
is on)
Accurate Frequency and
Amplitude
Visual carrier frequency measurement
Visual-to-aural carrier frequency measurement
Visual carrier peak level measurement
Visual-to-aural carrier level difference measurement
Accurate Amplitude Only Visual carrier peak level measurement
Visual-to-aural carrier level difference measurement
Fast Amplitude Only Carrier amplitudes are measured using marker values in 10 dB/div vertical scale
Visual Carrier
Amplitude Range --18 dBmV to +58.8 dBmV
5
for C/N ≤30 dB (300 kHz RBW)
Frequency Range 15 MHz to 1015 MHz
Resolution 0.3 dB
Absolute Accuracy ±2.7 dB for visual C/N ≥30 dB (300 kHz RBW) and for FM signal C/N ≥33 dB (100
kHz RBW) assumes flatness corrections are present
Relative Accuracy ±0.8 dB relati ve to adjacent channel
±1.5 dB relative to all other channels
Aural Carrier
Difference Range 0to30dBforC/N≥15 dB (300 kHz RBW)
Resolution 0.3 dB
Accuracy ±1.1 dB for C/N ≥15 dB (300 kHz RBW)
Aural <FM> Deviation (Typical) Peak FM deviation measured for the selected channel
Range 10 kHz to 50 kHz, usable to 80 kHz
Accuracy ±4 kHz
Cross Modulation (Typical) The third order distortion at the horizontal sync frequency (AM) measured on the
unmodulated visual carrier, as corrected to the NCTA recommended synchronous
square wave modulation procedure
Range 48 dB
Resolution 0.1 dB
Accuracy ±2 dB for cross modulation <36 dB
±3 dB for cross modulation <48 dB
Listen (Typical) The aural carrier for the selected channel is demodulated
Output Speaker or headphones with volum e control
Demodulation Type FM
Sweep Displays instantaneous peak FM deviation
5
Total input power (all signals included) cannot exceed +70 dBmV.