3
ESG family of 
RF signal generators  
The ESG family consists of four
series:
ESG-A series: analog instruments
ESG-AP series: analog instruments
with high spectral purity.
ESG-D series: digital and analog
instruments.
ESG-DP series: digital and analog
instruments with high spectral 
purity.
Refer to table 1 for a list of the 
model numbers and their associated 
capabilities including frequency 
range, spectral purity, and modula-
tion capability. 
In keeping pace with ever-changing
digital communication standards,
Agilent Technologies is the leading-
edge supplier of the latest signal-
generator technology. To meet your
evolving needs, Agilent Technologies
constantly enhances the ESG family
feature set. The latest released 
features are available as firmware 
for you to download online. In 
most cases, firmware up-grades 
can be done without any hardware
modification. If a hardware modifi-
cation is required, instructions 
are given on the Web page. The
ESG’s address is 
www.agilent.com/find/esg. Here 
you will find the latest news on the
ESG including firmware upgrades, 
frequently asked questions and new 
features.
Please consult the Agilent Technologies
ESG family RF digital and analog 
signal generators brochure, and the
technical specifications for more 
information. For your reference, a 
list of related literature is shown at 
the end of this profile.
Key standard features 
• Expandable architecture
• Broad frequency coverage
• Choice of electronic or mechanical
attenuator
• Superior level accuracy
• Wideband FM and ΦM
• Step sweep (frequency, power 
and list)
• Built-in function generator
• Lightweight, rack-mountable
• 3-year warranty
• 2-year calibration cycle
• IntuiLink PC software
1
Standard features only in the
ESG–D/DP series
• Broadband analog I/Q inputs
• I/Q adjustment capabilities and 
internal calibration
• Excellent modulation accuracy 
and stability
• Coherent carrier output
Analog only Digital and analog
 ESG-A series  ESG-AP series  ESG-D series ESG-DP series
(high spectral purity) (high spectral purity)
250 kHz – 1 GHz E4400B E4423B E4430B E4434B
250 kHz – 2 GHz E4420B E4424B E4431B E4435B
250 kHz – 3 GHz E4421B E4425B E4432B E4436B
250 kHz – 4 GHz E4422B E4426B E4433B E4437B
dBc/Hz
10
100 1000 10000 100000 1000000
–70
–80
–90
–100
–110
–120
–130
–140
–150
–160
Offset (Hz)
10000000
ESG-DP
ESG-AP
ESG-D
ESG-A
Choosing a model number
Typical SSB phase noise at 1 GHz (for additional phase noise plots, please refer to ESG Family 
of RF Signal Generators, Data Sheet, literature number 5965-3096E.
1.   IntuiLink software included free. For more information see page 26.