Owner manual

132
Spectrum Analyzers
Phase difference between channels: In same sensitivity range, at 0
to 90% of frequency range (at 23 ± 5˚C)
Power supply for accelerometers: Only AC input coupling,
4 mA source current, + side of channel A or B
Max. operating voltage +18 V, open circuit voltage 24 V max.
Overload display: LED
Test signal: At frequency ranges from 100 to 2 kHz,
amplitude level: approx. -4 dBV, frequency: sine wave, 8% of range
Trigger
Trigger modes: Free run mode, manual trigger mode, external
trigger mode, input signal trigger mode, automatic repeat trigger
mode
Trigger source: Input signal trigger through channel A or B signal;
external signal trigger by EXT signal
Trigger level:
Input signal trigger; Set by number keys with a resolution of 1/
256 of amplitude range
External signal trigger; TTL, rising or falling edge can be selected
(rear panel BNC connector)
Trigger slope: +, -, ± (input signal trigger)
Trigger position: -128 K to +1 M sample, with 1 channel measure
ment
-64 K to +1 M sample, with 2 channel measurement
Averaging
Frequency domain averaging modes: Addition (SUM), subtraction
(SUB), exponential function moving average (EXP), peak value
detection (PEAK)
Time domain averaging modes: Addition (SUM)
Delay domain averaging modes: Addition (SUM)
Amplitude domain averaging modes: Addition (SUM)
Number of averagings: 1 to 32767
Overlapping: 0%, 50%, 75%, MAX
Start/stop control: Start, stop, +1, continue (except for servo mode)
(erasing done automatically during start)
Measurement Modes
• Waveform measurement mode
• Spectrum measurement mode
• Time/frequency analysis mode
• Frequency response function measurement mode
• Servo analysis mode (R9211B/C)
Waveform Measurement Mode
Measurement functions:
Time domain instantaneous data, time domain average data, auto-
correlation function, cross-correlation function, probability
density function, cumulative distribution function
Amount of analysis data: 64 to 8192 points (1 channel),
64 to 4096 points (2 channels)
Amount of delay domain data: 64 to 2048 points
Averaging: Time domain averaging
Delay domain averaging
Amplitude domain averaging
Conversion function: Engineering units
Marker analysis functions: Peak value, rise time, fall time, pulse
width, root-mean-square value
Choice of 4 Types, To Fit the Application
R9211Series (Continued From Previous Page)
Input and Analysis Characteristics
Number of input channels: 2
Input format: Difference input format, signal ended format
Input impedance: Approx. 1 MΩ/100 pF (at signal ended)
Input coupling: AC, DC, GND
A/D converter resolution: 16 bits
Frequency range: 10 mHz to 100 kHz, 22 ranges in 1, 2, 5 steps
Frequency accuracy:± 50 ppm of frequency range ± measurement
resolution (at +23˚C ± 5˚C)
Input filter: Anti-aliasing filter (roll off characteristic -148 dB/oct.) is
applied to each frequency range and automatically set
However, at ranges of 1 kHz and below, analog and digital filters
are used together
Common-mode rejection ratio (CMRR):
50 dB min. (with DC coupling, at 50/60 Hz)
Maximum difference input voltage: ± 200 V
Maximum in-phase input voltage: ± 200 V
Input range: +30 to -60 dBV (variable in 1 dB steps)
Voltage display 44.7 V to 1.41 mV, rms display, 31.6 V to 1 mV
Auto range: Set at the optimum range stated above according to the
input signal (5 dB steps)
Maximum in-phase signal voltage:
± 14 V (-60 to -6 dBV range)
± 140 V (-5 to +14 dBV range)
± 200 V (+15 to +30 dBV range)
Maximum input sensitivity: -125 dBV (approx. 0.56 µVrms) (at
-140 dBV, 2 kHz range)
Dynamic range: All dynamic ranges are those measured at full
scale in spectrum mode, 0 to 90% of frequency range, sine wave
input with -3 dB amplitude level, 32 averagings, rectangular
wave weighting, filter on, 400-spectrum-line condition.
Also, 1/f noise is excluded. (23˚C ± 5˚C)
85 dB min. (+30 to -30 dBV) (90 dB typ.)
80 dB min. (-31 to -40 dBV)
70 dB min. (-41 to -50 dBV)
60 dB min. (-51 to -60 dBV)
Residual noise: All residual noise values are those measured at full
scale in spectrum mode, 32 averagings, rectangular wave
weighting, filter on, 400-spectrum-line condition. Also, 1/f noise is
excluded. However, at 0 to 90% of frequency range (23 ± 5˚C)
-85 dB min. (+30 to -40 dBV)
-75 dB min. (-41 to -45 dBV)
-60 dB min. (-46 to -60 dBV)
Amplitude linearity ±0.2 dB max.
(within -40 dB from full scale, +23 ± 5˚C)
Frequency flatness: ± 0.3 dB max. (at 23 ± 5˚C)
At 0 to 90% of frequency range, AC coupled -3 dB point is
approx. 0.2 Hz
Amplitude accuracy: Amplitude linearity + frequency flatness (at
23 ± 5˚C)
Amplitude difference between channels: In same sensitivity range,
at 0 to 90% of frequency range (at 23 ± 5˚C)
Specifications
R9211E/9211A R9211B/9211C
Within ± 3.0˚ Within ± 1.0˚
R9211E/9211A R9211B/9211C
Within ± 0.3 dB Within ± 0.1 dB