24
Attenuators, Options
UNA, UNB and H99
Choose the performance that best
meets your application needs. The
ESG family has four choices to
optimize performance; standard
electronic attenuator, optional
mechanical attenuator, optional
timeslot control, optional improved
ACP (Adjacent Channel Power)
performance.
Description
The ESG family has three options
for attenuators in addition to its
standard attenuator. The standard
attenuator is an electronic attenuator.
Option UNB is a mechanical attenua-
tor that provides approximately
4 dB more output power than the
electronic attenuator. Option UNA
is also an electronic attenuator but it
is optimized for controlling alternate
timeslots in TDMA frames. Option
H99 is an attenuator and output
board combination optimized for
ACP and out-of-channel measure-
ments in CDMA, W-CDMA and
TETRA applications. Each of these
attenuators is mutually exclusive
and must be specified at the time of
ordering. Some attenuators do not
have upgrade paths. Consult your
Agilent sales representative for more
information if you would like to
change attenuators.
Key features
State-of-the-art electronic
attenuator (standard)
Reliably cycle output power for
receiver sensitivity or amplifier
compression tests.
The patented all-electronic attenuator
design maximizes dependability.
Standard on all ESG series models,
it easily handles continuous output
power cycling with highly repeatable
results at frequencies up to 4 GHz.
Higher power (Option UNB)
Increase the output power up to
6 dB for higher power applications.
An optional mechanical attenuator
provides increased output power for
overcoming insertion losses from
cabling and switching matrices, or
for components requiring high drive
levels. Option UNB also has up to
7 dB improved ACP performance over
the standard electronic attenuator in
CDMA applications.
Vary timeslots power levels (Option UNA)
Simulate a TDMA mobile or base
station for reference sensitivity or
switching transient measurements.
Test TDMA designs by varying the
power level of transmitted digital
data in timeslot of a frame. This
control is required in GSM receiver
and transmitter design.
Optimize ACP (Option H99)
Meet W-CDMA and CDMA
performance requirements.
Option H99 offers up to 10 dB
improvement over the standard
electronic attenuator in ACP perfor-
mance for CDMA and W-CDMA
applications. It is the recommended
choice for CDMA and W-CDMA
component test environments.
Mechanical and electronic attenuator performance.
Option UNB
mechanical attenuator
Standard electronic
attenuator
High-performance pulse modulation,
Option 1E6
High-performance pulse modulation (available on the
ESG-A and ESG-AP) will give you confidence in your
radar or pulsed carrier measurements. Improved
pulse rise and fall times, plus excellent on/off ratios
provide the performance you need.
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