HP 8656B Synthesized Signal Generator, 0.1 to 990 MHz

Product Summary

The HP 8656B is a programmable synthesized signal generator that combines performance, quality, and economy, covering the 0.1 to 990 MHz frequency range. Offering ±1 dB level accuracy and 0.1 dB resolution with calibrated output levels over the +13 to -127 dBm range, the HP 8656B provides precise output control. In addition, its modulation capabilities include simultaneous and mixed modulation modes from internal (400 Hz and 1 KHz tones) and external sources. These features create a versatile signal generator, for use in a variety if applications.

Product Features

• 100 kHz to 990 MHz frequency coverage

• <35 ms frequency switching speed

• AM and FM capabilities

• ±1 dB level accuracy

• Amplitude offset and phase adjust capabilities

Product Specifications

Frequency Specifications

Range:					100 kHz to 990 MHz
Resolution:				10 Hz
Timebase aging rate:			±2 ppm/year (typ)
    Option 001:				1.5 x 10e-6 parts/day after 10 days (typ)
Switching speed (w/i 100 Hz):		<35 ms (25 ms typ. at 25°C)


Spectral Purity Specifications

SSB phase noise			
(fc=500 MHz, 20 kHz offset):		<-114 dBc/Hz
Nonharmonics (>5 kHz offset, CW):	<-60 dBc

Harmonics (at levels <= ±7 dBm):	<-30 dBc
Subharmonics				None
Residual FM (0.3 to 3 kHz, CW)		<7 Hz rms


Amplitude Specifications
Range:					+13 to -127 dBm into 50 Ohms.
Resolution: 				0.1 dB
Absolute accuracy:			<±1 dB, 123 to 990 MHz, +7 to 
					-124 dBm
					<±1.5 dB, 0.1 to 123.5 MHz, 
					and < -124 dBm or
					> +7 dBm at 0.1 to 990 MHz
Reverse power protection:		25 W


Frequency Modulation Specifications

Maximum peak deviation:			99 kHz, fc < 123.5 and > 247 MHz
					50 kHz, fc 123.5 to 247 MHz
					100Hz, deviations < 10 kHz

					1 kHz, deviations >10 kHz

Bandwidth (1 dB):			dc to 50 kHz
Indicator accuracy:			<±5% of setting
Distortion:				<0.5% THD + noise
    (internal rates, >=3 kHz peak deviation)


Amplitude Modulation Specifications

Depth (output at <=+ 7 dBm):		0 to 99%
					0.1 to 990 MHz
Resolution:				1%
Bandwidth (1 dB):			20 Hz to 40 kHz
Accuracy (internal rates):		<±(2% + 4 % of setting)
    (<90% AM <+ 7 dBm)
Distortion:				<1.5%
    (0 to 30% AM, internal rates, level < +7 dBm)


General Specifications
Remote Programming Interface: 		HP-IB (HP's implementation of 
					IEEE-488)
IEEE-488 functions:			SH0, AH1, T0, L2, SR0, RL1, 
					PP0, DC1, C0, E1

Save/recall/sequence registers:		100 nonvolatile registers to save 
					front-panel settings
Operating temperature:			0° to 55°C
Power requirements:			100 V, 120 V, 220 V or 240 V 
					(+5, -10%) from 48 to 440 Hz
					125 VA maximum
Size:					133 mm H x 425 mm W x 520 mm D 
					(5.25 in x 16.75 in. x 20.5 in)
Weight:					18.1 kg (40 lb)

Product Ordering Information

HP 8656B	Synthesized Signal Generator
   Opt 001	High-Stability Timebase
   Opt 002	RF Connectors on Rear Panel Only
   Opt 907	Front Handle Kit (HP 5061-9689)
   Opt 908	Rack Flange Kit (HP 5061-9677)
   Opt 909	Combined Front/Rack Flange Kit (HP 5061-9683)
   Opt 910	Extra Operation/Calibration and Two Service Manuals
   Opt 915	Add Service Manual
   Opt +W30	Three-year Repair Service
   Opt +W32	Three-year Calibration Service

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Page Updated: Thursday June 19 16:17:01 UTC 1997