HP 8648B Synthesized Signal Generator, 100 kHz to 2000 MHz

The HP 8648B Synthesized RF Signal Generator is ideal for manufacturing high-volume products such as cordless telephones, pagers and two-way radios. Designed for semi-automated receiver test, and a variety of general purpose applications, the HP 8648B starts with the basic capabilities of the HP 8647A, enhances residual FM, level accuracy and phase noise performance, offers optional pulse modulation and high power, and extends the frequency to 2 GHz. While economical, the HP 8648B is built to stringent quality standards, promoting reliability and measurement repeatability.

In addition, the simplistic design of the front panel shortens the operator's learning curve and increases productivity. With 300 storage registers and ten user-definable sequences (accessible from a remote keypad), the HP 8648B easily adapts to any test procedure.

[ Features ]

Economical 2.0 GHz synthesized signal generator
Superior level accuracy
Wide frequency and output power coverage
Optional pulse modulation and high power
Remote and memory interfaces for semi-automated testing
Simple, dependable operation

[ Specifications ]

Frequency Specifications

Range:				9 kHz to 2000 MHz
Resolution:			1 Hz
  Display:			10 Hz
Switching Speed (typical)	<1001 MHz: <75 ms: >=1001 MHz: <100ms
Accuracy (after one hour warm-up and within one year calibration):
   Standard			ą3 x (10e-6) x carrier frequency in Hz
   Option 1E5			ą1.5 x (10e-6) x carrier frequency in Hz 
Accuracy and Stability 	
(Calibration and adjustment dependent; after one hour warm-up and 
 within one year of calibration):
				ą aging rate ą temperature effects ą 
				line voltage effects

			Standard timebase	Opt 1E5
    Aging		<ą2 ppm/yr		<ą0.5 ppm/yr;
						<ą1 ppm (1st yr)
    Temperature		<ą1 ppm			<ą0.05 ppm 
    Line voltage (ą5%)	<ą0.5 ppm		<ą0.1 ppm

Output: 			10 MHz, typically >0.5 Vrms into 50 ohm
External Reference Oscillator Input: 
				Accepts 2, 5, 10 MHz ą5 ppm, and a 
				level range of 0.5 V to 2 Vrms into 50 ohm




Spectral Purity Specifications

Harmonics (output <=4dBm): 	<-30 dBc
Subharmonics (output <=+4 dBm)
    <1001 MHz: 			-60 dBc
    >=1001 MHz: 		-50 dBc
Nonharmonics (>5 kHz offset, <= +4 dBm output level):
   <249 MHz: 			<-55 dBc			
   <1001 MHz: 			<-60 dBc
   <=2001 MHz: 			<-54 dBc			
Residual FM (CCITT,rms)
   <249 MHz: 			<7 Hz, typically <4 Hz
   <501 MHz: 			<4 Hz, typically <2 Hz
   <1001 MHz: 			<7 Hz, typically <4 Hz
   <=2001MHz: 			<14 Hz, typically <8 Hz
SSB phase noise (at 20 kHz offset, typical)
    @fc 500 MHz:  		<-120 dBc/Hz 
    @fc 1000 MHz: 		<-116 dBc/Hz
    @fc 2000 MHz: 		<-110 dBc/Hz




Amplitutde Specifications

Range:				+13 to -136 dBm

Max Power with Option 1EA (High Power)
	Freq. (MHz)		Power
	<=1000			+20
	<=1500			+19
	<=2000			+17

Display Resolution: 		0.1 dB
Accuracy (specified power <13 dBm to -127 dBm at 25°C ą5°C):
				ą1.0 dB
Reverse power protection (watts into 50 ohm):
	           		50 watts
	
SWR: (output <-6 dBm, typical)
    	<249 kHz:		<2.5:1
    	<=2000 MHz:		<1.5:1
   
Output Impedance: 		Nominally 50 ohm	




Frequency Modulation Specifications

Peak Deviation (rates >25 Hz ac FM)
    <249 MHz: 			0 to 100 kHz
    <501 MHz: 			0 to 50 kHz
    <1001 MHz: 			0 to 100 kHz
    <=2000 MHz: 		0 to 200 kHz
Resolution
    For <=10% peak deviation:	10 Hz
    For >10% to maximum peak deviation:	
				100Hz
Deviation Accuracy (internal 1 kHz rate)
    <1001 MHz: 			ą3% of deviation ą30 Hz
    <=2001 MHz: 		ą3%  of deviation ą60 Hz

Rates
Internal: 			400 Hz to 1 kHz
External dc: 			DC  to 150 kHz (typical, 3 dB BW)
External ac: 			20 Hz  to 150 kHz (typical, 3 dB BW)

Distortion (1 kHz rate, THD + N, 0.3 to 3 kHz BW):
    <1001 MHz: 			<1% at deviations >4 kHz
    <=2001 MHz: 		<1% at deviations >8 kHz
    88 to 108 MHz: 		<0.5% at deviations >=75 kHz

Carrier Frequency Accuracy (relative to CW in dcFM, at 25°C + 5°C):
    <1001 MHz: 			ą500 (typical 200) Hz, 
				deviations <10 kHz
    <2000 MHz: 			ą1000 (typical 400) Hz, 
				deviations <20 kHz
    <=3200 Mhz: 		ą2000 (typical 800) Hz, 
				deviations <40 kHz


Phase Modulation Specifications

Peak Deviation
    <249 MHz: 			0 to 10 radians
    <501 MHz: 			0 to 5 radians
    <1001 MHz: 			0 to 10 radians
    <=2000 MHz: 		0 to 20 radians

Resolution
    <2001 MHz:			0.01 radian
    >=2001 MHz:			0.02 radian

Deviation Accuracy (internal 1 kHz rate, typical):
    <1001 MHz: 			ą3% of deviation ą0.05 radians
    <=2001 MHz: 		ą3% of deviation ą0.01 radians

Rates
    Internal: 			400 Hz or 1 kHz
    External: 			dc: dc to 2 kHz (typical, 3 dB BW)
                                ac: 1 Hz to 25 kHz (typical, 3 dB BW)

Distortion (1 kHz rate)
    <1001 MHz: 			<1% at deviations >=3 radians
    <=2000 MHz: 		<1% at deviations >=6 radians




Amplitude Modulation Specifications

(AM is not specified below 1.5 MHz and is typical above 1001 MHz)

Range: 				0 to 100%; output <=+4 dBm
Resolution: 		        0.1%
Accuracy (1 kHz rate at 25°C ą5°C and <70% depth): 
				ą5% of setting ą1.5%
Rates
    Internal: 			400 Hz or 1 kHz
    External: 			20 Hz to 25 kHz (typ., 3 dB BW)
Distortion (1 kHz rate, THD +N, 0.3 to 3 kHz BW):
    @30% AM: 			<2%
    @90% AM: 			<3%




General Specifications
Pulse Option 1E6
On/Off Ratio:			>80 dB <2000 MHz  >70 dB  >=2000 MHz
Rise/Fall Times: 		<10 ns

Modulation Source
Internal: 			400 Hz or 1 kHz, front panel BNC 
				connector provided at nominally 1 V 
				(p-p) into 600 Ohms
External: 			1 V peak into 600 Ohms (nominal) 
				required for full scale modulation. 
				(High/Low indicator provided for 
				external signals <=10 kHz.)

Remote Programming
Interface: 			HP-IB (IEEE-488.2-1987) with Listen and Talk
Control Languages: 		SCPI version 1992.0. The HP 8648B is 
				code compatible with the HP 8656B and 8657.
IEEE-488: 			SH1, AH1, T6, TE0, L4, LE0, SR1, RL1, 
				PP0, DC1, DT0, C0, E2

ISO Compliant: 			Manufactured in an ISO 9002 registered
 				facility in concurrence with HP's 
				commitment to quality.
General
Power Requirements: 		90 to 264 V, 48 to 440 Hz; 150 VA max.
Operating Temperature: 		0° to 50°C
Leakage: 			Conducted and radiated interference 
				meets MIL-STD 461B RE02 and FTZ 1046. 
				Typically <1ľV.



Declarations of Conformity

This product adheres to European Regulations.
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 European Regulatory Declarations of Conformity.









HP 8648B	Synthesized Signal Generator, 100 kHz to 2000 MHz
   Opt 0B0      Delete manual set
   Opt 0B1      Add manual set
   Opt 1CM      Rackmount kit
   Opt 1E5      Add high stability timebase
   Opt 1E6      Add high performance pulse modulation
   Opt 1EA      Higher output power
   Opt AB0      Taiwan - Chinese localization
   Opt AB1      Korea - Korean localization
   Opt AB2      China - Chinese localization
   Opt ABD      Germany - German localization
   Opt ABE      Spain - Spanish localization
   Opt ABF      France - French localization
   Opt ABJ      Japan - Japanese localization
   Opt UK6      Commercial calibration certificate with test data
   Opt W30      3 Year Return Repair Service
   Opt W32      3 Yrs Customer Return Calibration Service
   Opt W34      3 Yrs Customer Return Stds Comp Cal Service
   Opt W50      5 Year Return Repair Service
   Opt W52      5 Year Cust Return Calibration Service
   Opt W54      5 Year Standards Compliant Cal Service


HP 83300A       Remote Interface
HP 83301A       Memory Interface
P/N 5961-4720   Transit Case



  









HP 8647A and 8648A/B/C/D Signal Generators, Technical Specifications






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Related HP 8647/48 and 8656/57 Economy Signal Generator Families product datasheets:

HP 8647A Synthesized Signal Generator, 250 kHz to 1000 MHz

HP 8648A Synthesized Signal Generator, 100 kHz to 1000 MHz

HP 8648B Synthesized Signal Generator, 100 kHz to 2000 MHz

HP 8648C Synthesized Signal Generator, 9 kHz to 3200 MHz

HP 8648D Synthesized Signal Generator, 9 kHz to 4000 MHz

HP 8657A Synthesized Signal Generator, 100 kHz to 1040 MHz

HP 8657B Synthesized Signal Generator, 100 kHz to 2060 MHz



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