Vector Voltmeter Family

Product Summary

The HP 8508A vector voltmeter is a two-channel receiver that makes high frequency voltage measurements easy. Its narrowband measuring technique gives it a sensitivity of 10 microV to help you measure even the smallest signal. And that's only part of its capability. The HP 8508A also measures the phase between two signals - so you can use it for another complete set of measurements - like group delay and electrical length. All standard HP 8508A vector voltmeters include an HP 85081B high-impedance input module with a frequency range of 100 kHz to 1 GHz. The HP 11570A accessory kit allows measurements in a 50 ohm system using the probes of a standard HP 85081B. Option 050 replaces the HP 85081B with an HP 85082A, a 50 ohm input module with a frequency range of 300 kHz to 2 GHz.

Related product datasheets available online:

HP 8508A Vector Voltmeter
HP 85082A 50 Ohm Input Module, 300 kHz to 2 GHz
HP 11570A 50 Ohm Accessory Kit

Product Features

• RF voltage and phase measurements made accurately and simply

• Standard 100 kHz to 1 GHz with high impedance inputs; optional 300 kHz to 2 GHz with 50 ohm inputs

Product Specifications

Partial Specifications for HP 8508A
Frequency Range:	
With HP 85081B:			100 kHz to 1 GHz
With HP 85082A:			300 kHz to 2 GHz

Measurement Range (A and B Channel Maximum Input Levels)
Magnitude Measurements
				HP 85081B		HP 85082A	
	100 kHz to 1 MHz:	300 mV
	300 kHz to 1 MHz:				3 dBm			
	1 MHz to 1 GHz:		1 V			13 dBm						
	
Phase Measurements
	300 kHz to 1 GHz:	300 mV
	300 kHz to 2 GHz:				3 dBm

A (Ref) Channel Minimum Input Levels for Magnitude and Phase Measurements
	100 kHz to 300 kHz	10 mV			
	300 kHz to 3 MHz:	1 mV			-47 dBm
	3 MHz to 1 GHz:		300 µV	
	3 MHz to 2 GHz:					-57 dBm

B (Meas) Channel Noise Floor
	1 MHz to 1 GHz:		10 µV rms
	1 MHz to 2 GHz:					-87 dBm

Input Crosstalk
	100 kHz to 500 MHz:	>100 dB
	300 kHz to 500 MHz:				>100 dB
	500 MHz to 1 GHz:	>80 dB			>80 dB
	1 GHz to 2 GHz:					>70 dB

Impedance SWR
	100 kHz to 750 MHz:	<1.15
	300 kHz to 1.5 GHz:				<1.2
	750 MHz to 1 GHz:	<1.45
	1.5 GHz to 2 GHz:				<1.5

Maximum Input (Damage Level):
				2 Vac peak, ±50 Vdc	16 dBm, ±50 Vdc

Measurement Bandwidth:		1 kHz (nominal)		1 kHz (nominal)

General Characteristics
Lockup Time (Within 1 Range)
Frequencies up to 3 MHz:	40 ms
Frequencies >3 MHz:		20 ms

Rear Panel Outputs
Sensitivity: 			1 mV per display digit
Update Rate: 			Approximately 3 readings per second

HP-IB Capability
Interface Functions:		SHI, AH1, T6, TE0, L4, LEO, SRI, RL1, PP0,
				DC1, DT1, CO
Transfer Rate
	Normal Operation:	Approximately 12 readings per second
	Maximum Rate:		Approximately 1 reading per 18 ms
		

Probe Power Supply
Supplies:			+12V, -12 V and ground to operate one
				HP 85024A High Impedance Probe

Environment
Temperature	
	Operating:		0 to 55°C
	Storage:		-40 to +70°C
Humidity:			0 to 95%, non-condensing
Altitude
	Operating:		0 to 4500 m (0 to 14800 ft)
	Storage:		0 to 15000 m (0 to 50000 ft)

RFI:				Conducted and radiated interference is within the
				requirements of Messempfaenger-Postverfuergung
				526/527/79.

Physical
Size
	Standard:		133 mm H x 425.5 mm W x 473.3 mm D
				(5.25 in x 19.75 in x 20.65 in)
	Opt 001:		158.8 mm H x 524.5 mm W x 501.65 mm D
				(6.25 in x 19.75 in x 20.65 in)
Weight
	Standard
	  	Net:		8.1 kg (18 lb)
	  	Shipping:	11 kg (24 lb)
	Opt 001
		Net:		9.4 kg (21 lb)
		Shipping:	12.5 kg (27.5 lb)

Power:				100, 120, 220, or 240 V +5/-10%
				48 to 440 Hz, 40 VA

Product Ordering Information

HP 8508A	Vector Voltmeter (includes HP 85081B High Impedance Input Module)
   Opt 001	Adds Bail Handle, Rugged Feet, and Front Panel Storage Cover
   Opt 050	Replaces HP 85081B with HP 85082A 50 Ohm Input Module
   Opt 100	Deletes Input Module
   Opt 801	Additional Probe Accessories
	2 each HP 10216A	2 each HP 11576A
   Opt 908	Rack Mount Kit (HP 5062-3977) for Instruments without Handles
   Opt 913	Rack Mount Kit (HP 5062-4071) for Instruments with Handles
   Opt W30	Additional Three-Year, Return-to-HP Hardware	Support
   Opt W32	Three-Year Calibration Service
HP 85081B	High Impedance Input Module (100 kHz to 1 GHz)
HP 85082A	50 Ohm Input Module (300 kHz to 2 GHz)
HP 11570A	50 Ohm Accessory Kit

HP 8508A	User Documentation
   Opt 030	Japanese Operating Guide
   Opt 031	French Operating Guide
   Opt 032	German Operating Guide
   Opt 033	Italian Operating Guide
   Opt 034	Spanish Operating Guide

To help you make the right instrument choices

Your Field Sales Engineer is ready to answer your questions about specifications, applications and ordering. Find your Field Sales Engineer at your Local Sales Office.

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Page Updated: Thursday June 19 16:10:32 UTC 1997