Datasheet

Version 04.00, December 2018
Rohde & Schwarz R&S
®
Cable Rider ZPH Cable and Antenna Analyzer 9
R&S
®
ZPH-K7 analog modulation analysis AM/FM (model .12 only)
Measurement of analog modulation signals
Center frequency
10 MHz to 4 GHz
Demodulation bandwidth
2 MHz, 1 MHz, 500 kHz, 300 kHz,
200 kHz, 100 kHz, 50 kHz, 30 kHz,
20 kHz, 10 kHz (nom.)
Bandwidth accuracy
< +/- 5% (nom.)
Display
AM
carrier power, carrier frequency offset,
AM modulation depth, modulation
frequency, THD, SINAD
FM
carrier power, carrier frequency offset,
FM deviation, modulation frequency, THD,
SINAD
Carrier power
Carrier power measurement accuracy
add 0.2 dB, see section Level
measurement uncertainty,
Display resolution
0.1 dB
AF (modulation frequency)
1
Range
AM
20 Hz to 100 kHz (nom)
FM
20 Hz to 200 kHz (nom)
Resolution
1 Hz
Measurement uncertainty
1 kHz ≤ AF ≤ 200 kHz
±(1 % of measured value) (nom.)
20 Hz ≤ AF < 1 kHz
± 1 Hz (nom.)
AF filters
Lowpass
audio decimation
bypass, 1/10, 1/30, 1/100 (nom.)
De-emphasis
FM demodulation and demodulation
bandwidth 200 kHz and 300 kHz
off, 50 µs, 75 µs (nom.)
AM demodulation
2
Measurement range
modulation depth
5% to 95 % (nom.)
Modulation depth uncertainty
±(4 %) (nom.)
FM demodulation
3
Measurement range
frequency deviation
10 kHz to 400 kHz (nom.),
max. 0.4 × demodulation bandwidth
Deviation uncertainty
±(0.04 × (AF + deviation)) (nom.)
Modulation distortion
1, 2, 3
Measurement functions
THD, SINAD
Measurement range
–50 dB to 0 dB (THD)
0 dB to 50 dB (SINAD, AM)
0 dB to 40 dB (SINAD, FM)
Display resolution
0.1 dB
Measurement uncertainty
1 dB (nom.)
AF frequency range
20 Hz to 100 kHz (nom.)
1
Min. and max. detectable audio frequency and harmonics depend on the demodulation bandwidth and audio filter settings.
2
Modulation frequency 1 kHz sine, AM modulation depth 50 %, carrier level 0 dBm, center frequency = 499 MHz, reference level 6 dBm,
demodulation bandwidth = 20 kHz, SNR > 60 dB, audio filter = bypass.
3
Modulation frequency 1 kHz sine, FM-deviation = 75 kHz, carrier level 0 dBm, center frequency = 499 MHz, reference level 6 dBm,
demodulation BW = 300 kHz, SNR > 60 dB, audio filter = 1/10, de-emphasis = off.