Fluke 96000 Series Service Manual page 26

AM External
Input
[1]
Bandwidth (-3 dB)
Depth Sensitivity
Input Level
Carrier Level Accuracy
[3]
Depth Accuracy
[4]
Residual Distortion
[1] Maximum input frequency 100 kHz for carrier frequency >125 MHz.
[2] DC coupled External Modulation permits dc control of carrier level or the offsetting of the modulation waveform. Note that at rates
from 0.5 Hz to 10 Hz interaction with carrier leveling may occur, resulting in modulation distortion.
[3] Applies to demodulated signal content at rate frequency fundamental.
[4] Includes harmonic distortion and noise up to 5 times rate frequency.
[1] [2]
Frequency and Phase
Modulation
Waveform
Carrier Frequency (Fc)
Carrier Frequency Accuracy
Rate (Fr)
Rate Resolution
Rate Accuracy
[3]
Deviation (Fd)
Deviation Resolution
FM/PM Sine Deviation
[2]
Accuracy
[3] [4]
FM/PM Sine Distortion
[1] 96270A: Modulation not available above 4 GHz. Splitter/Sensor leveling not available in Modulation functions.
[2] Internal phase modulation is generated by applying sinusoidal frequency modulation with peak deviation derived from the phase
deviation and rate settings (Fd = φd x Fr).
[3] See chart showing maximum available deviation, and maximum deviation for which deviation accuracy and distortion specifications
apply. Applies to demodulated signal content at rate frequency fundamental. Specifications are typical for modulation rates <20 Hz.
[4] Includes harmonic distortion and noise up to 5 times rate frequency.
Rear-panel BNC connector (50 MHz Counter, Modulation, Leveling and Frequency Pull
Input). 10 kΩ nominal input impedance.
[2]
DC coupled : dc to 220 kHz, typical. AC coupled: 10 Hz to 220 kHz, typical.
User adjustable, 0.5 %/V to 400 %/V
±2 V pk maximum operating, ±5 V pk absolute maximum
As AM Internal Sine + 20 mV x depth/V setting, typical
±3 % of setting ± 0.1 %, for >5 % depth, 1 Vpk input, dc or 200 Hz to 20 kHz
As AM Internal Sine, for 1 Vpk input, ≤100 kHz.
FM: Sinusoidal, or External signal
PM: Sinusoidal, or External signal
9 MHz to 4 GHz
Internal Frequency Reference: ±0.05 ppm ±240 mHz
External Frequency Reference: Ext Freq Ref Accuracy ±240 mHz
1 Hz to 300 kHz
0.1 Hz, 5 digits
≥1 kHz: ±1 digit, <1 kHz: ±10 mHz
Fc 9 MHz to 31.25 MHz
Fc 31.25 MHz to 125 MHz FM: 10 Hz to 750 kHz
Fc 125 MHz to 4 GHz
FM: 0.1 Hz, 5 digits. PM: 0.0001 rad, 5 digits
±3 % of setting ±240 mHz.
Typically ±0.25 % of setting ±240 mHz, for ≤50 kHz rate.
≤-40 dBc (1 %) +20 dB/decade above 10 kHz (See chart).
Typically ≤-65 dBc +20 dB/decade above 1 kHz.
PM: ≤1000 rad
FM: 10 Hz to 300 kHz
PM: ≤1000 rad
PM: ≤1000 rad or 0.12 % Fc/Fr
FM: 10 Hz to 0.12 % Fc
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