HP 83751A Synthesized Sweeper, 2 GHz to 20 GHz

The HP 83751A sweeper brings outstanding synthesized performance to the component-test marketplace. It delivers the best performance for the price in general purpose benchtop, swept test or scalar applications. This sweeper provides superior accuracy and stability while maintaining the speed of an analog source. Fully synthesized CW, stepped and ramp sweep modes are available in broadband and narrowband operation. The synthesis capability is particularly useful for the characterization of narrowband devices, in which the frequency instabilities of open-loop sources become most apparent. Excellent output power flatness and accuracy can be translated to the input port of the device under test with the power flatness correction feature of this source.

[ Features ]

Fully phase locked analog sweep for accuracy and speed
Flat and accurate output power to characterize the linear response of the test device
Offset frequency sweep for mixer test
HP 8350 programming mode for backwards compatibility

[ Specifications ]

Frequency Specifications
Frequency Range:              2 to 20 GHz

Timebase Stability 
Standard 10 MHz Time Base:    ±10 ppm
High Stability Time Base (Option 1E5):
                              Accuracy = Calibration ± Aging Rate 
                              ±Temperature Effects ± Line Voltage Effects
Aging Rate:                   <5 x 10^-10/day, 1 x 10^-7/year


CW Mode
Resolution:                   1 Hz                               
Accuracy                      Same as timebase
Switching Time:               70 ms, maximum


Stepped Sweep Mode          
Resolution:                   Settable 1 Hz, Display 1 kHz                                   
Accuracy:                     Same as timebase
Minimum Step Size:            Same as resolution
Number of Points:             2 to 1601
Switching Time/Point¹:        7 ms + 8 ms/GHz step 
Dwell Time/Point:             1 ms to 1 s

¹Up to 50 ms switching times can occur when crossing the 2 GHz band switch point. 


Ramp (Analog, Phase Locked) Sweep Mode
Resolution:                   1 kHz     
Accuracy (25 ±5 °C): 
for 100 ms Sweeps the Greater of:    
                              ±0.01% of Span ± timebase
                              or ±75 kHz ± timebase  
Sweep Time:                   10 ms to 100s; 400 MHz/ms max  


RF Output²
Maximum Leveled Power³ (25 ±5 °C)+10 dBm
Minimum Settable Power:       -15 dBm
     With Option 1E1:         -85 dBm
Resolution
Settable:                     0.01 dB 
Display:                      0.1 dB

Accuracy and Flatness⁴
     ------------------------------------------------
     Power Level    Accuracy (25 ±5 °C)    Flatness⁵         
     ------------------------------------------------
     >-10 dBm       ±1.0 dB                ±0.7 dB        
     >-80 dBm       ±1.5 dB                ±1.2 dB     

Power Sweep:                  ±25 dB/sweep     
Power Slope:                  0 to ±2 dB/GHz, up to power sweep limit 
External Leveling
External Detector:
Range:                        -0.2 mV to -0.5 V                 

Source Match:                 <1.7:1 SWR, (internally leveled)

²With type N connector (option 1ED), performance is typical above 18 GHz  
³Power typically degrades <2.5 dB over 0 to 55 °C
⁴Specifications apply for coupled attenuator mode and ALC level >-10 dBm
⁵Below 50 MHz, flatness is specified over 25 ±5 °C range


Spectral Purity
Harmonics (At Max Leveled Power):
10 MHz to 1.5 GHz:            -30 dBc
1.5 to 20 GHz:                -45 dBc
Subharmonics                  None
Residual FM (0.05 to 15 kHz Bandwidth)⁶
                              1 kHz RMS in CW mode

⁶Residual FM is typically <10 kHz in unlocked FM mode

Modulation
Pulse
On/Off Ratio:                 60 dB
Rise/Fall Times: 
0.5 to 2 GHz:                 15 ns
2 to 20 GHz:                  100 ns rise, 50 ns fall
Minimum Leveled Width⁷:        2 µs                              

Internal Pulse Generator:
Width Range:                  1 µs to 65 ms
Period Range:                 2 µs to 65 ms
Resolution:                   1 µs
Internal Square Wave:         1.0 kHz and 27.8 kHz, scalar mode

⁷For frequencies <500 MHz in CW mode, or <2 GHz in swept mode

AM
Sensitivity:                  1 dB/V
Bandwidth (3 dB):             >100 kHz, Usable to 1 MHz
Depth:                        20 dB; +10 dBm to -10 dBm
Input Impedance:              3.5 kohms


FM
AC/Locked Mode:
Rates:                        50 kHz to 10 MHz
Maximum Deviation:            Same as unlocked mode up to 25 X rate
DC/Unlocked Mode:
Rates:                        DC to 10 MHz
Maximum Deviation:            
     DC to 100 Hz Rates:      ±75 MHz
     100 Hz to 1 MHz Rates:   ±7 MHz
     1 MHz to 2 MHz Rates:    ±5 MHz
     2 MHz to 10 MHz Rates:   ±1 MHz
Sensitivity:                  -6 or -20 MHz/V 
Input Impedance:              1 kohm

Declarations of Conformity

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European Regulatory Declarations of Conformity.

[ Ordering ]

HP 83751A Synthesized Microwave Sweeper, 2 GHz to 20 GHz Opt 0B2 Operation manual Opt 0B3 Service manual Opt 1BN Mil-std 45662A calibration certification Opt 1BP Mil-std 45662A calibration w/ test data Opt 1CM Rackmount kit Opt 1CP Rackmount and handle kit Opt 1CR Rack slide kit Opt 1E1 Add step attenuator Opt 1E4 Add rear panel output Opt 1E5 Add high stability timebase Opt 1ED Type-N output connector Opt 1EE Add mm source interface Opt AB0 Taiwan - Chinese localization Opt AB1 Korea - Korean localization Opt AB2 China - Chinese localization Opt ABD Germany - German localization Opt ABF France - French localization Opt ABJ Japan - Japanese localization Opt ABZ Italy - Italian localization Opt AX2 Add bail handle and front protective cover Opt UK6 Commercial calibration certificatew/ test data Opt W30 3 Years Return Repair Service Opt W32 3 Years Customer Return Calibration Service Opt W34 3 Years Customer Return Standards Compliant Calibration Service Opt W50 5 Years Return Repair Service Opt W52 5 Years Customer Return Calibration Service Opt W54 5 Years Standards Compliant Calibration Service

[ Key Literature ]