HP 8657B Option 022 0.3 GMSK Modulated Synthesized Signal Generator

Product Summary

The HP 8657B Option 022 signal generator provides 0.3 Gaussian Minimum Shift Keying (0.3 GMSK) modulation for testing receivers designed for the Global System for Mobile Communications (GSM) Pan-European Digital Cellular Radio System and the Personal Communication Network (PCN). This option contains the necessary premodulation filtering and signal-processing circuitry to generate precise 0.3 GMSK modulation over the entire 520 to 2060 MHz and 10 to 130 MHz frequency bands. The HP 8657B Option 022 is also a versatile signal generator offering a variety of features, such as simultaneous and mixed modulation combinations of AM and FM, as well as a carrier phase adjust capability that allows you to characterize phase-sensitive devices. The low residual FM and excellent phase noise performance of this signal generator makes it ideal for many in-channel and even out-of-channel receiver tests. It offers a wide output range, +13 to -143.5 dBm with superior level accuracy of 1.0 dB.

Product Features

• 0.3 GMSK modulation

• Wide frequency coverage, 100 kHz to 2060 MHz

• <35 ms frequency switching speed

• AM and FM capabilities

• Optioned pulse modulation

• ±1 dB level accuracy (typically ±0.5 dB)

• Amplitude offset and phase adjust capabilities

Product Specifications

Frequency Specifications
Range:					100 kHz to 2060 MHz
Resolution: 				1Hz
Timebase aging rate:			±2 ppm/year (typ.)
    Option 001: 			1 x 10e-9 parts/day after 45 days (typ)
Switching speed (w/i 100 Hz): 		<35 ms typ. at 25C)


Spectral Purity Specifications

SSB phase noise 			
(fc=500 MHz, 20 kHz offset):		<-130 dBc/Hz 
Nonharmonics (>5 kHz offset, CW):	<-60 dBc, <1030 MHz
 					<-54 dBc, >=1030 MHz
Harmonics (at levels <=+7 dBm):		<-30 dBc, <1030 MHz
					<-25 dBc, >=1030 MHz
Subharmonics              		None, 100 kHz to 1030 MHz
                                        <-35 dBc, 1030 to 2060 MHz
Residual FM (0.3 to 3 kHz, CW):    	<3 Hz rms (<6 Hz >1040 MHz).                 <


Output Specifications
Range:				+13 to -143.5 dBm into 50 ohms,
				+10 dBm, <1030 MHz w/Opt 003
Resolution:			0.1 dB
Absolute Accuracy:		< ±1 dB, output +3.5 to -127 dBm
				< ±1.5 dB, output >=+ 3.5 dBm
Reverse Power Protection:	50 W


0.3 GMSK Digital Modulation Mode Specifications
Frequency Range
Date Normal:			520 to 2060 MHz
Date Inverted:			10 to 130 MHz
Harmonics (fc <1030 MHz):	<-30 dBc
Non-Harmonic Spurious (>150 kHz offset):
				<-50 dBc
Noise Floor:			<-100 dBc/Hz
Modulation Format:		0.3 GMSK
Pre-modulation Filter:		Gaussian LPF
Bandwidth x Data Rate (BT):	0.3
Data Rate:			270.833 kHz (±1 kHz)
Modulation Phase Error:
(890-960 MHz, 10-130 MHz):	<3° rms (1° typ.)
				<8° peak (5° typ.)
(1030 to 2060 MHz):		<3.5° rms (1.5° typ.)
				<9° peak (1.5° typ.)
Frequency Error
(fc <1030 MHz):			10 Hz
(fc >1030 MHz):			20 Hz
Inputs:				Serial data and clock
Outputs:			Baseband 0.3 GMSK I and Q signals



Frequency Modulation Specifications

Maximum peak deviation:		50 kHz, fc <1040 MHz
				400 kHz, fc 1040 to 2060 MHz
Resolution:			100 Hz, <1040 MHz, dev <20 kHz
				200 Hz, >1040 MHz, dev <20 kHz
Bandwidth (1 dB):		dc to 50 kHz
Indicator accuracy:		<±5% of setting
Distortion:			<0.5% THD + noise
  (internal rates, 		>=6kHz peak deviation for 
  >=3 kHz peak deviation)	fc >=1040 MHz


Amplitude Modulation Specifications

Depth (output at <=+7 dBm):	0 to 100%
				fc >=400kHz
Resolution:			1%
Bandwidth (1 dB):		20 Hz to 40 kHz
Accuracy (internal rates):	< ±(2% + 6% of setting)
  (<90% AM <+7 dBm)
Distortion:			<1.5%, <1030 MHz
  (0 to 30% AM, internal	<4%, >1030 MHz
   rates, level < +7 dBm)


Pulse Modulation Specifications
					       
On/Off ratio (Option 003): 	>70 dB, fc >=130 MHz,
				>95 dB, fc>=1030 MHz
Rise/fall time, 10% to 90%:	<35 ns, fc>=130 MHz,
				<50 ns, fc>=1030 MHz
Repetition rate:		dc to 30 MHz, typical
Duty cycle:			0% to 100%


General Specifications

Remote Programming Interface:	HP-IB (HP's implementation of 
				IEEE-488)
IEEE-488 functions:		SH0, AH1, T0, L2, SR0, RL1, 
				PP0, DC1, DT0, C0, E1

Save/recall/sequence registers:	100 nonvolatile registers to save 
				front-panel settings
Operating temperature:		0° to 55°C
0.3 GMSK Modulation:		+15°C to 35°C
Power requirements:		100 V, 120 V, 220 V or 240 V (+5, -10%) 
				from 48 to 440 Hz: 200 VA maximum
0.3 GMSK Modulation:		90 TO 264 V from 48 to 66 Hz; 75 VA maximum
Size:				133 mm H x 425 mm W x 574 mm D 
				(5.25 in x 16.75 in x 22.6 in)
0.3 GMSK Modulation:		44 mm H x 425 mm W x 422 mm D
				(1.75 in x 16.75 in x 17 in)
Weight:				20.5 kg (45 lb)
0.3 GMSK Modulation:		4 kg (9 lb)

Product Ordering Information

HP 8657B	Opt 022 0.3 GMSK Modulated Synthesized Signal Generator
   Opt 001	High-Stability Timebase
   Opt 002	RF Connectors on Rear Panel Only
   Opt 003	Pulse Modulation
   Opt H60	Pulse Modulation, Frequencies to 1040 MHz
   Opt 907	Front Handle Kit (5061-9689)
   Opt 908	Rack Flange Kit (5061-9677)
   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 16:21:56 UTC 1997