8720ES-1D5

The Keysight Agilent 8720ES-1D5 is a high-performance vector network analyzer (VNA) covering a frequency range from 50 MHz to 20 GHz. This model features a fully integrated S-parameter test set and includes Option 1D5, which adds a high-stability ovenized crystal oscillator (OCXO) timebase. Designed for comprehensive characterization of RF and microwave components, it offers excellent dynamic range, accuracy, and measurement speed.

Component Testing Microwave RF and Microwave Vector Network Analyzer

Specifications

General

Parameter	Value
Interfaces	GPIB (HP-IB), Parallel (Centronics), RS-232 (Serial)
Display	7.5-inch integrated color LCD

Physical

Parameter	Value
Power Supply	90 to 132 V AC (47 to 66 Hz) or 198 to 264 V AC (47 to 66 Hz), 280 W maximum
Operating Temperature	0 °C to 55 °C
Dimensions (W×H×D)	425 mm × 222 mm × 457 mm
Weight	34 kg

Frequency & Port Characteristics

Parameter	Value
Frequency Range	50 MHz to 20 GHz
Number of Built-in Ports	2
Test Port Connector Type	3.5 mm (male)
Impedance	50 Ω
Frequency Resolution	1 Hz
Frequency Reference Type	Oven-controlled crystal oscillator (OCXO) (Option 1D5)
Frequency Stability over Temperature	< ±0.05 ppm (0 °C to 55 °C)
Frequency Aging Rate	< ±0.1 ppm/year

Source / Stimulus Specifications

Parameter	Value
Output Power Range	-85 to +10 dBm (frequency dependent)
Power Resolution	0.05 dB

Receiver & Dynamic Range Performance

Parameter	Value
System Dynamic Range	100 dB (at 20 GHz, 10 Hz IFBW)
IF Bandwidth Range (IFBW)	10 Hz to 6 kHz
Maximum Receiver Input Level	-5 dBm

Measurement Speed & Calibration

Parameter	Value
Number of Measurement Points per Sweep	3 to 1601
Sweep Types	Linear frequency, log frequency, list frequency, power sweep
Calibration Types Supported	SOLT, TRL, LRL

Measurement Parameters & Software Options

Parameter	Value
Measured Parameters	S11, S21, S12, S22

Hardware Interfaces & Connectivity

Parameter	Value
External Reference Input	10 MHz
External Reference Output	10 MHz

Physical Dimensions & Weight

Parameter	Value
Rack Unit (RU) Height	5U

Display & Traces

Parameter	Value
Display Channels	2 channels
Traces per Channel	Up to 2 traces per channel (4 traces total)
Display Formats	Log magnitude, phase, group delay, Smith chart, polar, linear magnitude, SWR, real, imaginary

Storage

Parameter	Value
Internal Storage	3.5-inch floppy disk drive (1.44 MB, MS-DOS format)

Environmental

Parameter	Value
Storage Temperature Range	-40 °C to +75 °C
Operating Humidity Range	5% to 95% relative humidity (non-condensing) at +40 °C
Maximum Operating Altitude	4,600 m (15,000 ft)

Receiver Specifications

Parameter	Value
Phase Resolution	0.01°
Magnitude Resolution	0.001 dB

Source Specifications

Parameter	Value
Power Flatness	±2.0 dB
Harmonic Spurious	<-15 dBc (at maximum output power)
Mixer-related Non-harmonic Spurious	<-30 dBc (at maximum output power)

Measurement Control

Parameter	Value
Sweep Trigger Modes	Continuous, single, hold, external, GPIB
IF Averaging Range	1 to 999

Frequency Reference (Option 1D5)

Parameter	Value
Option 1D5 Reference Frequency	10 MHz
Option 1D5 Oven Temperature Stability	±0.05 ppm (0 to 55 °C)
Option 1D5 Daily Aging Rate	< 5 × 10^-10 (after 24 hours warm-up)
Option 1D5 Yearly Aging Rate	< 1 × 10^-7

Performance

Parameter	Value
Trace Noise (Magnitude)	< 0.006 dB RMS (typical at -5 dBm, 3 kHz IFBW)
Trace Noise (Phase)	< 0.038° RMS (typical at -5 dBm, 3 kHz IFBW)

Inputs & Outputs

Parameter	Value
External Video Output	VGA (15-pin D-sub)
Test Port Bias Inputs	BNC rear panel, up to 500 mA, 40 VDC maximum
Auxiliary Analog Input	BNC rear panel, ±10 V range
External Trigger Input	BNC rear panel, TTL compatible

Interfaces & Software

Parameter	Value
Printer Port	Centronics parallel (25-pin D-sub)
Programming Language Support	HP-IB (HP 8720/8753 compatible)

Technology

Vector Network Analyzer

Applications

RF and Microwave Component Characterization