Introduction and Specifications
Specifications 1
1-17
FM Deviation Limits and Performance Specifications
10 Hz
11 MHz
Deviation
(Fd)
300 kHz
180 kHz
220 kHz
4.8 MHz
750 KHz
125 MHz31.25 MHz 4 GHz
Performance Specifications Applicable
Max Available Deviation
Fd <2 % Fc Fd <0.6 % Fc Fd <0.12 % Fc
66 kHz
150 kHz
9 MHz
-
--
hpn367.eps
FM & PM Distortion
Rate (kHz)
-40
-30
-20
-50
10
Distortion
(dBc)
3001001
hpn368.eps
FM External
Input
Rear-panel BNC connector (50 MHz Counter, Modulation, Leveling and Frequency Pull
Input).10 kΩ nominal input impedance.
Bandwidth (-3 dB) DC coupled: dc to 1 MHz, typical. AC coupled: 10 Hz to 1 MHz, typical.
Deviation Sensitivity User adjustable, 500 Hz/V to 19 MHz/V, carrier frequency dependent.
Input Level
±2 V pk maximum operating, ±5 V pk absolute maximum
Carrier Frequency Accuracy
As FM Internal Sine ±20 mV x deviation/V setting, typical.
Deviation Accuracy
[1]
±3 % of setting ± 240 mHz, for 1 Vpk input, dc or 200 Hz to 20 kHz rate, deviation
>0.01 % Fc.
Residual Distortion
[1] [2]
As FM Internal Sine, for 1 Vpk input, deviation >0.01 %Fc.
Typically ≤-55 dBc +20 dB/decade above 10 kHz, for 1 Vpk input, deviation >0.01 % Fc.
[1] See chart showing maximum available deviation, and maximum deviation for which deviation accuracy and residual distortion
specifications apply. Applies to demodulated signal content at rate fundamental frequency.
[2] Includes harmonic distortion and noise up to 5 times rate frequency.
PM External
[1]
Input
Rear-panel BNC connector (50 MHz Counter, Modulation, Leveling and Frequency Pull
Input). 10 kΩ nominal input impedance.
Bandwidth (-3 dB) DC coupled: dc to 1 MHz, typical. AC coupled: 10 Hz to 1 MHz, typical.
Deviation Sensitivity User adjustable, 0.001 rad/V to 96 rad/V, carrier frequency dependent
Input Level
±2 V pk maximum operating, ±5 V pk absolute maximum
Carrier Frequency Accuracy As FM Internal Sine, typical.
Deviation Accuracy
[2]
±3 % of setting ±240 mHz/Fr rad, for 1 Vpk input, dc or 200 Hz to 20 kHz rate, deviation
>0.01 % Fd/Fr rad. Typical
[1] External phase modulation deviates the phase of the carrier, applying the set deviation sensitivity to the modulation input signal.
[2] See chart showing maximum available equivalent frequency deviation and equivalent maximum frequency deviation for which
phase deviation accuracy specifications apply for sinusoidal inputs (φd = Fd / Fr). Applies to demodulated signal content at rate
frequency fundamental.
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