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

The HP 8648C 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 8648C 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 3.2 GHz. While economical, the HP 8648C 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 8648C easily adapts to any test procedure.

[ Features ]

Economical 3.2 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 3200 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, typical):
   Standard:			ą3 x 10e-6 x carrier frequency in Hz
   Option 1E5:			ą1.5 x 10e-6 x carrier frequency in Hz 
Internal Reference Oscillator
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 <=4 dBm): 	<-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	<2001 MHz: 	<-54 dBc
   <1001 MHz: 	<-60 dBc	<=3200 MHz: 	<-48 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
   <=3200 MHz: 			<28 Hz, typically <12 Hz
SSB phase noise (at 20 kHz offset, typical)
    @ fc 500 MHz:  <-120 dBc/Hz; @ fc 2000 Mhz: <-110 dBc/Hz
    @ fc 1000 MHz: <-116 dBc/Hz; @ fc 3000 MHz: <-106 dBc/Hz


Amplitude Specifications

Range
<=2500 MHz:			+13 to -136 dBm
>2500 MHz:			+10 to -136 dBm

Max Power with Option 1EA (High Power)
				Freq. (MHz)		Power
				<=1000			+20
				<=1500			+19
				<=2100			+17
				<=2500			+15
				<=3200			+13

Display Resolution:	 	0.1 dB
Accuracy (specified power <13 dBm to -127 dBm at 25 ą5°C)
				ą1.0 dB
    @ fc > 2.5 GHz:		ą1.5 dB (>=-100 dBm)
				ą3 dB (< -100 dBm)
Reverse power protection (watts into 50 ohm)
    				50 watts <=2000 MHz; 25 watt <=2000 MHz
SWR: (output <-6 dBm, typical)
    <249 kHz: 			<2.5:1
    <=2500 MHz: 		<1.5:1
    <=3200 MHz: 		<2.0:1

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
    <2001 MHz: 			0 to 200 kHz
    <=3200 MHz: 		0 to 400 kHz
 
Resolution
    For <=10% peak deviation
    	<2001 MHz: 		10 Hz
    	>=2001 MHz: 		20 Hz
    For >10% to maximum peak deviation
    	<2001 MHz: 		100 Hz
    	>=2001 MHz: 		200 Hz

Deviation Accuracy (internal 1 kHz rate)
<1001 MHz: 			ą3% of deviation ą30 Hz
    <2001 MHz: 			ą3% of deviation ą60 Hz
    <=3200 MHz: 		ą3% of deviation ą120 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
    <3200 MHz: 			<1% at deviations >16 kHz
    88 to 108 MHz: 		<0.5% at deviations >=75 kHz

Carrier Frequency Accuracy (relative to CW in dcFM, at 25 + 5°C)
    <1001 MHz: 			ą500 (typical 200) Hz, deviations <10 kHz
    <2001 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
    <2001 MHz: 			0 to 20 radians
     <=3200 MHz: 		0 to 40 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 ą0.1 radians
    <=3200 MHz: 		ą3% of deviation ą0.2 radians

Rates
    Internal: 			400 Hz or 1 kHz
    External: 			20 Hz to 10 kHz (typical, 3 dB BW)

Distortion (1 kHz rate)
    <1001 MHz: 			<1% at deviations >=3 radians
    <2001 MHz: 			<1% at deviations >=6 radians
    <=3200 MHz: 		<1% at deviations >=12 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%
    @ 70% 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 ohm
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 8648C 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
The HP 8647A and 8648 A/B/C signal generators are manufactured in an ISO 9002 
registered facility in concurrence with Hewlett-Packard's commitment to quality.
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 <1uV.

Declarations of Conformity

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European Regulatory Declarations of Conformity.

[ Ordering ]

HP 8648C Synthesized Signal Generator, 9 kHz to 3200 MHz Opt 1EA High Power Opt 1E6 Pulse Opt 1E5 High-Stability Timebase Opt 1CM Rack Kit (HP 08648-60001)

HP 83300A Remote Interface HP 83301A Memory Interface Transit Case, p/n 5961-4720

[ Key Literature ]