Agilent Technologies N9010A - Manual (Page 160)

160 Chapter 16
Analog Demodulation Measurement Application
Frequency Modulation - Level and Carrier Metrics
Frequency Modulation - Level and Carrier Metrics
Description Specifications Supplemental Information
FM Deviation Accuracy
abc
(Rate: 1 kHz to 1 MHz,
Deviation: 1 to 100 kHz)
a. This specification applies to the result labeled "(Pk-Pk)/2".
b. For optimum measurement, ensure that the channel bandwidth is set wide enough to capture the
significant RF energy. Setting the channel bandwidth too wide will result in measurement errors.
c. Reading is a measured frequency peak deviation in Hz, and rate is a modulation rate in Hz.
±(1% of
(rate + deviation) + 20 Hz)
(nominal)
FM Rate Accuracy
b ±0.2 Hz (nominal)
(Rate: 1 kHz to 1 MHz
d
)
d. Rate accuracy at high channel bandwidths assumes that the deviation is sufficiently large to overcome
channel noise.
Carrier Frequency Error
e
e. tfa = transmitter frequency
× frequency reference accuracy.
±0.5 Hz (nominal) + tfa Assumes the
signal is still visible in the channel
BW with offset.
Carrier Power Same as Absolute Amplitude
Accuracy at all frequencies
(nominal).