8201 Modulation Analyzer

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The Model 8201 provides precision modulation and audio analysis in a single, easy-to-operate package. Measures AM, FM, PM, carrier and audio frequencies, SINAD, distortion and carrier level.

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Carrier frequency range: 100 kHz to 2.5 GHz

0 to 500 kHz FM deviation to 1% accuracy

0 to 99% AM to 1% accuracy

0 to 500 radians to 3% accuracy

Audio distortion range 0.01% to 100% THD or 0 to 80 dB SINAD

GPIB

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RF INPUT

Frequency Range 100kHz to 2.5GHz
Tuning(8) Automatic, typical acquisition time one second or manual from keyboard or IEEE-488 bus.
Sensitivity 10mV, Frequency Range: 100kHz to 520MHz.
15mV, Frequency Range: 520kHz to 1000MHz.
28mV, Frequency Range: 1000kHz to 1500MHz.
50mV, Frequency Range: 1500kHz to 2500MHz.
Maximum Input(8) 1 watt( 7V rms, +30dBm )
Maximum Safe Input(8) 40 Vdc, 35 Vac (25 W for source SWR < 4)
Level Set(8) Automatic, typical acquisition time one second for levels up to 7V, or manual from keyboard or IEEE-488 bus.
Input Impedance 50 ohms nominal.
VSWR < 1.50, Frequency Range: 100kHz to 2.0GHz.
< 1.80, Frequency Range: 2.0GHz to 2.5GHz
FREQUENCY MODULATION
Measurement + peak,  - peak,  peak average, quasi-peak, and rms.
Rates 20 Hz to 15 kHz, Frequency Range: 0.2 to 0.5MHz
20 Hz to 50 kHz, Frequency Range: 0.5 to 10MHz
20 Hz to 220 kHz, Frequency Range: 10 to 2.5GHz
Range(6) 0 to carrier (kHz) /10kHz peak, Frequency Range: 0.2 to 0.5MHz
0 to 150kHz peak, Frequency Range: 0.5 to 10MHz.
0 to 500kHz peak, Frequency Range: 10MHz to 2.5GHz
Resolution(7) 1Hz, 0.000 to 5.000kHz deviation.
10Hz, 5.00 to 50.00kHz deviation.
100Hz, 50.0 to 500.0kHz deviation.
Accuracy(1) (2) 1% of reading, 30Hz to 5kHz rates, Frequency, Range: 0.2 to 0.5MHz
2% of reading, 5kHz to 7.5kHz, Frequency Range: 0.2 to 0.5MHz
1% of reading, 30Hz to 15kHz, Frequency Range: 05 to 10MHz.
2% of reading, 15kHz to 30kHz, Frequency Range: 0.5 to 10MHz
1% of reading, 30kHz to 100kHz, Frequency Range: 0.01 to 2.5GHz
2% of reading, 100kHz to 150kHz, Frequency Range: 0.01 to 2.5GHz
Distortion < 0.1% for deviations < 30kHz, Frequency Range: 0.2 to 0.5MHz
< 0.1% for deviations < 75kHz, Frequency Range: 0.5 to 10MHz
< 0.1% for deviations < 100kHz, Frequency Range: 0.01 to 2.5GHz
Residual FM < 15Hz RM at 2000MHz carrier, decreasing linearly with frequency.
(3kHz low-pass) < 1Hz RMS at 100MHz. (floor)
Residual FM < 30Hz RMS at 2000MHz carrier, decreasing linearly with frequency.
(15kHz low-pass) < 2Hz RMS at 100MHz.(floor)
Incidental FM < 20Hz peak deviation at 50%AM, 30Hz to 3kHz measurement bandwidth.
AMPLITUDE MODULATION
Measurement + peak, - peak, peak average, quasi-peak, and rms.
Rates 20Hz to 15kHz, Frequency Range: 0.1 to 0.5MHz
20Hz to 50kHz, Frequency Range: 0.5 to 10MHz
20Hz to 220kHz, Frequency Range: 10 to 2.5GHz
Range 0 to 99.9%
Resolution 0.001% from 0.000 to 5.000% AM.
0.01% from 5.00 to 50.00% AM.
0.1% from 50.1 to 99.9% AM.
Accuracy (1) (2) 1% of reading, 30Hz to 5kHz, Frequency Range: 0.1 to 0.5MHz
2% of reading, 30Hz to 7.5kHz, Frequency Range: 0.1 to 0.5MHz
1% of reading, 30Hz to 15kHz, Frequency Range: 0.5 to 10MHz
2% of reading 30Hz to 30kHz, Frequency Range: 0.5 to 10MHz
1% of reading 30Hz to 100kHz, Frequency Range: 0.01 to 2.5GHz
2% of reading 30Hz to 150kHz, Frequency Range: 0.01 to 2.5GHz
Distortion < 0.3% for depths up to 90%
Residual AM(3) 0.02% RMS, 30Hz to 3kHz bandwidth.
0.05% RMS, 30Hz to 15kHz bandwidth.
Incidental AM < 0.2% AM peak at 5kHz deviation, Carrier Frequency < 10MHz.
(3kHz low-pass) < 0.2% AM peak at 50kHz deviation, Carrier Frequency > 10MHz.
PHASE MODULATION
Measurement + peak, - peak, peak average, quasi-peak, and rms
Rates 100Hz to 15kHz, Frequency Range: 0.2 to 0.5MHz
20Hz to 50kHz, Frequency Range: 0.5 to 10MHz
20Hz to 100kHz, Frequency Range: 10MHz to 2.5GHz
Range(4) 0 to CARRIER (kHz)/10 RAD peak, Frequency Range: 0.2 to 0.5MHz
0 to 150RAD peak, Frequency Range: 0.5 to 10MHz
0 to 500RAD peak, Frequency Range: 10MHz to 2.5GHz
Resolution(5) 0.001 RAD, 0.000 to 5.000 RAD deviation
0.01 RAD, 5.00 to 50.00RAD deviation
0.1 RAD, 50.0 to 500.0 RAD deviation
Accuracy(1) (2) 3% of reading, 200Hz to 7.5kHz, Frequency Range: 0.2 to 0.5MHz
3% of reading, 200Hz to 30kHz, Frequency Range: 0.5MHz to 2.5GHz
Distortion < 0.1% for deviations < 30 RAD, Frequency Range: 0.2 to 0.5MHz
< 0.1% for deviations < 75 RAD, Frequency Range: 0.5 to 10MHz
< 0.1% for deviations < 100RAD, Frequency Range: 0.01 to 2.5GHz
Residual PM < 0.1 RAD RMS at 2GHz decreasing linearly with frequency
< 0.005 RAD RMS at 100MHz (floor)
Incidental PM < 0.02 RAD peak at 50%AM, 30Hz to 3kHz bandwidth
CARRIER FREQUENCY
Range 100kHz to 2.5GHz
Resolution 10Hz, Frequency < 1000MHz
100Hz, Frequency > 1000MHz
Accuracy reference accuracy °” 3digits
Reference 10.0000MHz, 1 x 10 - 6/year aging
1 x 10 - 6/dagree C temperature Influence, from 1 to 50 degrees C
CARRIER LEVEL
Range - 47.0 ( -27.0 ) to + 30.0dBm, Frequency Range: 0.1 to 520MHz
- 37.0 ( -17.0 ) to +30.0 dBm, Frequency Range: 520 to 1500MHz
- 33.0 ( -13.0 ) to + 30.0dBm, Frequency Range: 1500 to 2500MHz
* With carrier frequency set. (  ) values In automatic mode
Frequency Range 100kHz to 2500MHz
Resolution 0.01dB or 0.1 millivolts
Accuracy °” 1dB, Frequency Range: 0.1 to 520MHz
°” 2.0dB, Frequency Range: 520 to 1500MHz
°” 3.0dB, Frequency Range: 1500 to 2500MHz
AUDIO FREQUENCY
Range 10Hz to 220kHz
Resolution 0.1Hz from 10Hz  to 1kHz
10Hz from 10kHz to 100kHz
100Hz above 100kHz
Accuracy reference accuracy °”1count
AUDIO DISTORTION/SINAD
Frequency Range 20Hz to 20kHz
Tuning Automation if modulation frequency is within range, or manual from keyboard or IEEE-488 bus
Distortion Range 0.01 to 100% THD or 0 to 80dB SINAD
Resolution 0.01%, Range: 0.01 to 9.99%
0.1%, Range: 10.0 to 99.9%
0.01dB, Range: 0 to 80dB SINAD
Accuracy °”10% or °”1dB SINAD. Residual modulation must be accounted for in distortion measuremnts
Residual Distortion < 0.1% or 60dB SINAD
AUDIO FILTERS
High-pass <10Hz Gaussian, less than 10% droop with 5Hz square wave.(8)
30, 300and 3000Hz, 3-pole Butterworth
Low-pass 3 and 15kHz, 3-pole Butterworth
20kHz, 3-pole Bessel
50 and 220kHz, 7-pole Butterwoth
De-emphasis 25, 50, 75, and750£gs
Accuracy °” 4% 3dB corner and time constant
AM CALIBRATOR Internal, 50.00% depth, 0.1% accuracy
FM CALIBRATOR Internal, 125.0kHz deviation, 0.1% accuracy
PM CALIBRATOR Internal, 136.3 RAD deviation, 1% accuracy
GENERAL
Power Requirements 100, 120, 220, or 240 volts, °”10%, 50 - 400Hz, single phase, approx. 65VA
Operating Temperature 0 to 55 degrees C
Dimensions 17.25 inches (43.8 cm) wide
5.75 inches (14.6cm) high
18.75inches (47.6cm)deep
Weight 28Ids (12.7kg)
Accessories Included rack mounting hardware
SUPPLEMENTAL SPECIFICATIONS
AF OUT (8) Uncalibrated, approx, 1V into 600 ohms on display Source impedance 600 ohms
IF OUT (8) Approximately 2dB into 50ohms

Frequency 1.21MHz nominnl for carriers from 10 to 2500MHz 346kHz for carriers from 2 to 10MHz,

and 100kHz to 2MHz for carriers below 2MHz

Source impedance 50 ohms
AM OUT (8) DC coupled, 0.02 volts peak-to-peak per 1%AM depth. Source impedance 600 ohms
FM OUT (8) DC coupled, volts peak-to-peak per °”100kHz deviation. Source impedance 600 ohms
DOST OUT (8) Uncalibrated, approximately 1V rms into 600 ohms at 5000counts on display. Source impedance 600 ohms
REF IN (8) TTL compatible for external timebase, Switching is automatic
IEEE-488 (8) Complies with IEEE-488-1978. Implements AH1, SH1, T6, TE0, SR1, PP0, DC1, DT1, C0, and E1
Stereo Separation (8) > 48dB, 50Hz to 15kHz, < 10 to 220kHz bandwidth
AVIONICS AM CALIBRATION (optional)
Accuracy °” 0.7%, 20 to40%AM, at 30Hz to 3kHz rates, < 10 to 15kHz filters
Flatness °” 0.4% for constant AM between 20and and 40%, and 90and 150Hz rates
POWER REFERENCE (optional)
Frequency 50MHz, °” 1%
Power Accuracy 0.7% initial accuracy
°”1.2% over 1year
CCITT FILTER (optional) bandpass filter, CCITT recommendation P.53.
CCIR FILTER (optional) bandpass filter, CCIR recommendation 468-3(DIN 45404)
C-MSG FILTER (optional) bandpass filter, Bell System Technical Reference 41009
AUDIO LOOP THRU (optional)
Frequency range < 10Hz to > 220kHz
Input impedance 1 Megohm, shunted by approximately 50pF
Output Impedance 600 ohms
NOTES
(1) peak residuais must be accounted for
(2) For rms add °” 1% of reading
For qunsl-peak add °” 6% of reading, 20Hz to 20kHz
(3) Level > 100millivolts, carrier frequency
Above 520MHz, residuals Increase linearly with frequency
(4) Up to 1kHz modulation rate, Above 1kHz range decreases linearly with modulation frequency
(5) Up to 1kHz modulation rate. Above 1kHz resolution is determined by the product of deviation and modulation rate
(6) With 750 us de-emphasis, and pre-display selected, the deviation is limited to 50kHz peak
(7) Display resolution is ten time greater with 750£gs de-emphasis, and pre-display selected
(8) These specifications are for application purposes and, although typical, are not warranted

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