HP 70909A RF Section, 100 Hz to 26.5 GHz

The HP 70909A RF section provides coverage from 100 Hz to 26.5 GHz. This RF section is used in the HP 71209A spectrum analyzer. Diode-pair mixing provides lower conversion loss, allowing the spectrum analyzer to have sensitivities that compete with fundamentally mixed designs. The sensitivity is also improved by the use of a built-in preamplifier before the first mixer (in the microwave path). For millimeter measurements, this RF section includes the extra switching and signals necessary to connect external mixers, including HP 11974 series preselected mixers. The HP 70909A Option Z40 makes use of this capability and integrates preselected mixing to 40 GHz. A switched LO is routed to the front panel for connection to an external mixer. Rear panel outputs include the 3 to 6.6 GHz LO, and IFs at both 321.4 and 21.4 MHz. The spectrum analyzer adjusts gain within the module to keep a constant relationship between the power out of the input attenuator and the IF outputs.

[ Features ]

Provides RF coverage from 100 Hz to 26.5 GHz
Compatible with external mixers, including the HP 11974 series
Rear panel output include the 3 to 6.6 GHz LO and two IF outputs at 321.4 MHz and 21.4 MHz

[ Specifications ]

General Specifications
RF Input:			APC 3.5, 50 ohms (nominal)
LO Emissions (10 dB attn)

		Center		Total Signal Power
		Frequency	Preselector ON
		----------------------------------
		0-2.9 GHz	< -100 dBm
		2.9-26.5 GHz	< -100 dBm

VSWR (>=10 dB attn)

		Frequency	VSWR (nominal)
		----------------------------------
		0-6.2 GHz	<1.4:1
		6.0 - 26.5 GHz	<2.0:1

321.4 MHz External IF Input:	SMA (f), 50 ohms (nominal)
Return Loss:			>=14 dB from 271.4 to 371.4 MHz
Maximum Safe Input Level
  ac: 				0 dBm
  dc:				ą3v
Noise Figure:			<7.0 dB
SHI:				> (+ 30 - CL) dBm
TOI:				> (+ 10 - CL) dBm
				(CL = external mixer conversion loss)

Tune and Span Output:		BNC (f), >10 k ohms load impedance
Voltage Range:			0 to + 13.25 V
Tuning Sensitivity:		RF input selected, 0.5 V/GHz RF frequency
				EM input selected, 1.5 V/GHz LO frequency
Preselector DAC:		(8 bit DAC)
Voltage Range
  RF Input Selected:		N=1 +13.3 mV
				N=2 +26.7 mV
				N=4 +53.3 mV
  External Mixer Input Selected:+40.0 mV

First LO Output:		SMB (f), 50 ohms, VSWR < 2.1:1
Frequency Range:		3.0 to 6.6 GHz 
Output Power
				25°C + 5°C	0°C - 55°C
	--------------------------------------------------
	Minimum			14.5 dBm	14.0 dBm
	Maximum			17.0 dBm	17.5 dBm

321.4 MHz IF Output:		Rear Panel SMB, (m), 50 ohms (nominal)
Bandwidth

	RF Frequency		-3 dB Bandwidth
	--------------------------------------------------
	0-2.9 GHz		>48 MHz
	2.7 - 26.5 GHz		>27 MHz
	(preselector ON)
	2.7 - 26.5 GHz		N/A
	(preselector OFF)
	EM Input		>200 MHz

Level Return Loss		-5 dBm; for 0 dBm RF input and 10 dB atten
				14 dB, at 321.4 ą50 MHz

[ Ordering ]

HP 70909A RF Section Opt Z40 Configuration to Work with HP 70590A Opt Z40 Opt 098 Controller Board Upgrade Kit HP 70860Aš Opt 099 RAM/ROM Upgrade Kit HP 70861Aš Opt 1BN Certificate of Calibration Opt lBP Certificate of Calibration with Data Opt 910 Extra User's Manual Opt 915 Service Documentation and Software šIf this module will be installed into an existing system, a firmware upgrade may be required. Modules with firmware version B.04.02 (920325) and earlier require upgrade HP 70860A. Modules with later version firmware may use upgrade HP 70861A. For more information see service note 70900A-14L / 70900B-01G.

[ Assistance ]

To help you make the right instrument choices

Local Sales Office

[ Related ]

Related product families available online:

MMS System Building Blocks