HP 8642A Synthesized Signal Generator, 100 kHz to 1050 MHz

Product Summary

The HP 8642A synthesized signal generator is a high-performance, programmable signal generator for demanding out-of-channel RF receiver measurements and other stringent RF applications. It covers the frequency range from 100 kHz to 1057.5 MHz. This signal generator provides low SSB phase noise and spurious, high output level and level accuracy, and a full range of modulation types. The low-distortion internal modulation oscillator can be used to modulate the HP 8642A up to 100 kHz rates. This internal oscillator can also be used as an independent audio source with variable rates and levels.

Product Features

• < -134 dBc/Hz SSB phase noise at 20 kHz offsets at 1 GHz.

• -100 dBc nonharmonic spurious allows spurious rejection tests to be fully automated with confidence

• ±1 dB absolute output level accuracy down to -127 dBm

• Up to +20 dBm output level reduces the need for external amplifiers

• AM, FM, phase and pulse modulation

• Up to 100 kHz modulation rates with low-distortion internal oscillator

• On-site repair and calibration

Product Specifications

Frequency Specifications
Range:			100 kHz to 1057.5 MHz

Bands:			The full range is covered in one continuous 
			span.  However, many specifications are 
			dependent on carrier frequency.  To 
			simplify such specifications, the carrier 
			frequency ranges are divided into bands as 
			shown below:

	Band		Carrier Frequency (MHz)	
	9		528.750001 to 1057.5
	8		264.375001 to 528.75
	7		132.187501 to 264.375
	6		66.093751 to 132.1875
	5		33.046876 to 66.09375
	4		16.523438 to 33.046875
	3		8.261719 to 16.523437
	2		4.130860 to 8.261718
	1		0.1 to 4.130859
	HET		0.1 to 132.1875

Sweep
Modes:			Start-stop, span, and phase continuous
X-Axis Output:		0 to 10 Vdc, ±10%
Y-Axis Output:		TTL positive true for display blanking during 
			retrace
Resolution:		1 Hz, 0.1 Hz with special function

Stability
	Standard:	Aging rate:  ±2 ppm/year	
	Option 001:	<10e-9/day aging rate after 8 days warmup


Spectral Purity Specifications
Residual FM (in CW, AM or Angle Modulation <1/3 max dev.)
	500 MHz:	<1.2 Hz (0.3 to 3 kHz BW), <2 Hz (0.05 to 
			15 kHz BW)
	1000 MHz:	<2 Hz (0.3 to 3 kHz BW), <5 Hz (0.05 to 
			15 kHz BW)
SSB Phase Noise at 20 kHz Offset (CW, AM or FM/PhiM <1/60 max dev)
	125 MHz:	-144 dBc/Hz
	200 MHz:	-141 dBc/Hz
	500 MHz:	-137 dBc/Hz
	1000 MHz:	-134 dBc/Hz
Residual AM:		<0.01% AM rms, 0.3 to 3 kHz BW

Spurious
	Harmonics:		-30 dBc at <= +10 dBm
	Subharmonics:		None, fc <=1057.5 MHz
	Nonharmonics (>10 kHz offsets):	
				-100 dBc
Third Order Intermodulation:	< -50 dBc at +10 dBm, 2 generators 
				25 kHz apart into a resistive 
				combiner.  Typically decreases 10 dB 
				for every 5 dB of combined level 
				decrease.


Output Specifications
Level
Range:				From maximum available to -140 dBm 
				(0.023 µV)
Maximum Level Available
	bands 1 thru 7:		+20 dBm (2.24 V)
	bands 8 and HET:	+18 dBm (1.78 V)
	band 9:			+16 dBm (1.41 V)

Resolution:			0.01 dB

Absolute Accuracy:		±1 dB, output level >= -127 dBm

Flatness:			<= ±0.75 dB, +10 dBm output level

Impedance:			50 ohm nominal

SWR:				<1.5:1, level<0 dBm; <2.0:1, level >=0 dBm

Reverse Power Protection:	50W, from a 50 ohm source 25 Vdc


Modulation Specifications
Amplitude Modulation
AM Depth:			0 to 99.9%, output level <= +10 dBm
AM Resolution:			0.1%
AM Indicator Accuracy at 1 kHz Rate and Up to 90% AM:
				±(3.5% of setting + 1% AM), fc <=528.75 MHz
				±(5% of setting + 1% AM), fc >528.75 MHz
AM Distortion at 1 kHz Rate:
	Depth				   Distortion
			     	fc <=528.75 MHz	  fc >528.75 MHz
	0 to 30% AM		<1%		  <2%
	30 to 70% AM		<2%	  	  <4%
	70 to 90% AM		<4%		  <6%

AM 3 dB Bandwidth, Depth <=90%
	External DC/AC Coupling:dc/20 Hz to 100 kHz, fc: 01 to 4.13 MHz, 
				33.04 to 2115 MHz, HET; 
				dc/20 Hz to 20 kHz, fc: 4.13 to 33.04 MHz
	Internal:		Same as external AC
Incidental PhiM at 1 kHz Rate and 30% AM:
				<0.2 radians peak

Frequency Modulation
Maximum FM Deviation:
	Carrier 	Maximum deviation     Maximum deviation
	frequency	dc-coupled	      ac-coupled or internal
	band		
					      (the smaller of)
	9		1.5 MHz		      1.5 MHz or f mod X 1080
	8		750 MHz		      750 kHz or f mod X 540
	7		375 kHz		      375 kHz or f mod X 270
	6		187 kHz		      187 kHz or f mod X 135
	5		93.8 kHz	      93.8 kHz or f mod X 67.5
	4		46.9 kHz	      46.9 kHz or f mod X 33.75
	3		23.4 kHz	      23.4 kHz or f mod X 16.88
	2		11.7 kHz	      11.7 kHz or f mod X 8.44
	1		93.8 kHz	      93.8 kHz or f mod X 67.5
	HET		1.5 MHz		      1.5 MHz or f mod X 1080

FM Resolution:				0.7% of setting or 0.0004% of 
					maximum 
					deviation, whichever is larger
FM Indicator Accuracy, Rates <= 100 kHz:±(5% of setting + 10 Hz)
FM Distortion, Rates 20 Hz to 100 kHz:	4% for max. dev., 2% for 1/2 
					max. dev., 0.4% for 1/15 
					maximum dc-coupled deviation
FM 3 dB Bandwidth (dc/ac coupling):	dc/20 Hz to 200 kHz (external)
Incidental AM:				0.3%, 20 kHz peak dev., 1 kHz 
					rate, fc >400 kHz

Phase Modulation
Maximum Phase Deviation:
	Carrier frequency band		Maximum deviation (radians)
	9				100
	8				50
	7				25
	6				12.5
	5				6.25
	4				3.13
	3				1.56
	2				0.78
	1				6.25
	HET				100
PhiM Accuracy:			±(5% of setting + 0.09 radians), 
				1 kHz rate
Phi Resolution:			greater of 0.7% of setting 
				or 0.0004% of maximum deviation
PhiM Distortion:		<0.4%, 1 kHz rate
PhiM 3 dB Bandwidth:		DC/20 Hz to 15 kHz

Pulse Modulation (for output levels <= +15 dBm)
Pulse On/Off Ratio:		>40 dB; >80 dB, fc >1057.5 MHz
Rise/Fall Time:			<400 ns, 10 % to 90%
Maximum Repetition Frequency:	100 kHz
Minimum Pulse Width:		2 µs

Internal Modulation Oscillator
Rates:				20 Hz to 100 kHz
Frequency
	Resolution:		1% of setting
	Accuracy:		2% ofsetting
Output Level
	Range:			0 to 3 V peak into 600 ohns
	Resolution:		4 mV
	Accuracy:		±(4% + 15 mV) within 1 second
Distortion:			<0.02%, 0.02 kHz to 15.8 kHz; <0.15%, >15.8 kHz
Output Impedance:		600 ohms ±10%		


Remote Programming Specifications
Interface:			HP-IB (IEEE-488-1978)

HP-IB Functions:		Listener, talker, and controller.  
				SH1, AH1, T5, TE0, L3, LE0, SR1, RL1,
   				PP1, DC1, DT1, C1, C3, C28, E2


General Specifications
Operating Temperature Range:	0° to 55°C

Storage Temperature Range:	-55° to +75°C

Leakage:Conducted and radiated interference is within the requirments 
	of MIL-STD-461V method RE02.  Interference is also within the 
	standards set by FTZ-1046.  Also, RF leakage of <0.5 µV is 
	induced in a 2 turn loop 2.5 cm in diameter, held 2.5 cm away 
	from any surface for ouptut levels <=0 dBm.

Power Requirements:		100, 120, 220, or 240 V; +5%, -10%; 
				48 to 440 Hz; 300 VA max
Size:				425 mm W x 133 mm H x 617 mm D 
				(16.75 in x 5.25 in x 24.3 in)
HP System II Module Size:	1 W x 5 1/4 H x 23 D

Weight:				Net, 32.7 kg (71.5 lb); 
				Shipping, 43 kg (95 lb)

Product Ordering Information

HP 8642A	Synthesized Signal Generator¹
   Opt 001	High-Stability Time Base
   Opt 002	Input/Output Connectors on Rear Panel Only
   Opt 1BN	MIL-STD 45662A Certificate of Calibration
   Opt 1BP	MIL-STD 45662A Calibration w/ Test Data
   Opt 710	On-Site Repair Manual
   Opt 907	Front Handle Kit
   Opt 908	Rack Flange Kit with Front Handles
   Opt 910	Additional Operation and Calibration Manual
   Opt 915	Add Service Manual
HP 8642A	Opt W30 Extended Repair Service
HP 11801A	On-Site Repair Kit for HP 8642A 

¹HP-IB cables not supplied

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Page Updated: Thursday June 19 16:14:27 UTC 1997