8201 Modulation Analyzer
The Model 8201 provides precision modulation and audio analysis in a single, easytooperate package. Measures AM, FM, PM, carrier and audio frequencies, SINAD, distortion and carrier level.
¡@
¡@
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 
¡@
¡@
RF INPUT 

Frequency Range  100kHz to 2.5GHz 
Tuning(8)  Automatic, typical acquisition time one second or manual from keyboard or IEEE488 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 IEEE488 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, quasipeak, 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 lowpass)  < 1Hz RMS at 100MHz. (floor) 
Residual FM  < 30Hz RMS at 2000MHz carrier, decreasing linearly with frequency. 
(15kHz lowpass)  < 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, quasipeak, 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 lowpass)  < 0.2% AM peak at 50kHz deviation, Carrier Frequency > 10MHz. 
PHASE MODULATION  
Measurement  + peak,  peak, peak average, quasipeak, 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 ¡Ó 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  ¡Ó 1dB, Frequency Range: 0.1 to 520MHz 
¡Ó 2.0dB, Frequency Range: 520 to 1500MHz  
¡Ó 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 ¡Ó1count 
AUDIO DISTORTION/SINAD  
Frequency Range  20Hz to 20kHz 
Tuning  Automation if modulation frequency is within range, or manual from keyboard or IEEE488 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  ¡Ó10% or ¡Ó1dB SINAD. Residual modulation must be accounted for in distortion measuremnts 
Residual Distortion  < 0.1% or 60dB SINAD 
AUDIO FILTERS  
Highpass  <10Hz Gaussian, less than 10% droop with 5Hz square wave.(8) 
30, 300and 3000Hz, 3pole Butterworth  
Lowpass  3 and 15kHz, 3pole Butterworth 
20kHz, 3pole Bessel  
50 and 220kHz, 7pole Butterwoth  
Deemphasis  25, 50, 75, and750£gs 
Accuracy  ¡Ó 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, ¡Ó10%, 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 peaktopeak per 1%AM depth. Source impedance 600 ohms 
FM OUT (8)  DC coupled, volts peaktopeak per ¡Ó100kHz 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 
IEEE488 (8)  Complies with IEEE4881978. 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  ¡Ó 0.7%, 20 to40%AM, at 30Hz to 3kHz rates, < 10 to 15kHz filters 
Flatness  ¡Ó 0.4% for constant AM between 20and and 40%, and 90and 150Hz rates 
POWER REFERENCE (optional)  
Frequency  50MHz, ¡Ó 1% 
Power Accuracy  0.7% initial accuracy 
¡Ó1.2% over 1year  
CCITT FILTER (optional)  bandpass filter, CCITT recommendation P.53. 
CCIR FILTER (optional)  bandpass filter, CCIR recommendation 4683(DIN 45404) 
CMSG 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 ¡Ó 1% of reading 
For qunslpeak add ¡Ó 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 deemphasis, and predisplay selected, the deviation is limited to 50kHz peak 
(7)  Display resolution is ten time greater with 750£gs deemphasis, and predisplay selected 
(8)  These specifications are for application purposes and, although typical, are not warranted 
¡@
Products list  brand  Model No.  Home