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HP 8901A Modulation Analyzer
150 kHz to 1300 MHz
Product Overview
Measurements
*
Frequency
Range: 150 kHz to 1300 MHz
Resolution:
10 Hz below 1000 MHz,
100 Hz above 1000 MHz
Input Level:
Automatic Mode: 20 dBm to
+30 dBm
Manual Mode: Typically
60 dBm to +30 dBm
Power
Display: Peak envelope power
Range: 1 milliwatt to 1 watt
Accuracy: Typically ±1.5 dB
Input Power Protection:
>25 watts
Modulation
Frequency Modulation
Rates: 20 Hz to 200 kHz
Deviations: to 400 kHz
Accuracy: ±1% of reading ±1 digit
for rates 30 Hz to 100 kHz
Amplitude Modulation
Rates: 20 Hz to 100 kHz
Depths: to 99%
Accuracy: ±1% of reading ±1 digit
for rates 50 Hz to 50 kHz and
depths >5%
Phase Modulation
Rates: 200 Hz to 20 kHz
Deviations: to 400 radians
Accuracy: ±3% of reading ±1 digit
Applications
Mobile Radio
The HP 8901A Modulation Analyzer combines all the capabilities
necessary for making accurate transmitter measurements. It
can be used in making all the tests listed below. It can also be
used to test modules and subassemblies from either the trans-
mitter or receiver. For reliability, input power protection reduces
the chance of accidentally damaging the modulation analyzer by
connecting it directly to a high power transmitter.
• Carrier power
• Carrier frequency and stability
• AM depth
• FM deviation
• Hum and noise
• Incidental AM or FM
• Modulation limiting
- Instantaneous
- Steady state
• Audio frequency response
Maintenance and Metrology
Accurately measuring modulation has long been a problem for
metrology laboratories. The HP 8901A Modulation Analyzer
helps solve this problem two ways. First, it provides an extremely
accurate method of measuring AM depth and FM deviation, and
it recovers the modulation with little degradation for making
measurements such as modulation distortion. Second, the optional
calibrators provide a precise modulation source for calibration.
There are many metrology and maintenance uses for the modula-
tion analyzer. They include:
• Signal generator calibration
• Modulation calibration standard
• VCO and VCXO characterization
*All parameters describe performance in automatic operation or properly set manual conditions. Specifications
describe the instrument's warranted performance. Supplemental characteristics (shown in italics) are intended to
provide information useful in applying the instrument by giving typical, but non-warranted, performance parameters.
H
Outstanding signal
characterization
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Related Manuals for HP HP 8901A
Summary of Contents for HP HP 8901A
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Page 1: Product Overview
Frequency Mobile Radio Range: 150 kHz to 1300 MHz The HP 8901A Modulation Analyzer combines all the capabilities necessary for making accurate transmitter measurements. It Resolution: can be used in making all the tests listed below. It can also be... -
Page 2: High Performance
Complete Signal High Performance Development Characterization The accuracy and versatility The HP 8901A Modulation Analyzer The HP 8901A Modulation Analyzer of the modulation analyzer brings together in one instrument offers a significant advancement in make it a very useful labora- several RF signal measurement modulation measurements. -
Page 3: Frequency Measurements
The HP 8901A Modulation Analyzer is a complete measurement system for accurately characterizing signals in the The modulation analyzer uses an 150 kHz to 1300 MHz frequency range. indirect technique for measuring RF frequencies. Instead of count- ing directly, the input signal is... -
Page 4: Rf Power Measurements
In addition to normal RF level The ability to measure low measurements made directly on residual FM is one of the key The HP 8901A Modulation Ana- the input signal, the modulation contributions of the modulation lyzer uses a diode detection cir- analyzer can measure the signal analyzer. -
Page 5: Operation
This is not the detection audio filters for filtering cisely modulated signal to use as case with the HP 8901A Modula- the recovered modulation. These a calibration standard. By order- tion Analyzer. It provides excel-... -
Page 6: Special Functions
Special Functions continuously monitor modulation There are also numerous special accuracy on a signal generator functions that can be used in veri- The modulation analyzer can do while tuning across the signal fying that the instrument and its more than is apparent from the generator’s frequency band. - Page 7 Programmability Applications The modulation analyzer’s capa- bilities exceed those required to The HP 8901A Modulation Ana- The HP 8901A Modulation Ana- verify many signal generator lyzer is completely programmable lyzer is a useful tool for analyzing specifications. Besides improving via the Hewlett-Packard Interface many types of signals.
- Page 8 Packard test and measurement products, applications, services, and a current Options sales office listing, visit our web site: HP 8901A Modulation Analyzer http://www.hp.com/go/tmdir You can also contact one of the follow- Option 001: Rear panel instead of front panel connections ing centers and ask for a test and for input, modulation output, calibrators.