Atec Agilent-E4916A User Manual
For Testing Crystal Resonators and
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Evaluating Their PerfoArmance Characteristics
HP E4916A
Crystal Impedance Meter
PRODUCT OVERVIEW
Meets IEC Standard through the Transmission
π Network Method
Allows Testing at up to 180 MHz
Enables Applying 0.1 nW Low Drive Level
Automates Testing and Evaluation through HP-IB and
Parallel I/O Interfaces
1
Displays Fr, CI, and Equivalent
Circuit Parameters (Backlit LCD)
Drive Level Selectable between 0.1 nW and 1 mW
(No Adjustments Required)
Front View
Easy Pass/Fail Judgment
(No External PC Required)
RF Output
Parallel I/O Port
Mobile radios and communicators
are increasingly expanding their
applications into homes and offices.
This makes the evaluation of crystal
resonator characteristics at higher
frequencies and/or lower drive levels
more critical. However, conventional
crystal impedance meters based on
the oscillation method cannot
properly meet the current measurement needs due to the following
limitations on:
High-end measurement frequency
(60 MHz or below)
Applicable power level
The HP E4916A is a crystal impedance meter based on the transmission
π network method which enables you
to:
Reference Input Test Signal Input Analog Voltage Output
Allows Testing at
up to 180 MHzv
External Reference Signal Input
Drive Level Dependency
Characteristic Evaluation Function
External Trigger Input
Test at high frequencies (1 MHz to
180 MHz)
Apply low drive level (0.1 nW to
1 mW, when testing a 25 Ω DUT
with the π circuit).
The HP E4916A yet provides a cost
effective solution, comparable
enough to conventional CI meters.
In addition to Fr and CI measurements, the HP E4916A offers a variety
of testing capabilities including the
equivalent circuit analysis and the
drive level dependency characteristic
evaluation (DLD) through easy-tofollow steps. It comes with the HP-IB
and parallel I/O interfaces for easy
connection to external equipment,
thus allowing an automatic testing
system to be configured.
Evaporation Monitoring Function
HP-IB Interface
Rear View
Key Features
Based on the transmission π
network method recommended by
the IEC444 standard.
Wide frequency range (1 MHz to
180 MHz)
Easy to change the drive level
(0.1 nW to 1 mW)
Applies up to 20 mW to the DUT
when used in combination with the
optional impedance probe (option
001)
Allows you to use the same test
fixtures as those for the network
analyzer.
Provides the π calibration to correct
errors resulting from the extension
of the cable.
Saves and recalls up to 10 patterns
of the system settings together with
calibration data.
2
Meets a Variety of Measurement Needs
on the Production Lines
For Final Inspection:
DLD (drive level dependency)
characteristic measurement. The
HP E4916A offers the DLD
characteristic measurement
function for efficient determination of variations in resonance
frequency and impedance resulting
from variations in drive level.
Centralized data management. The
HP-IB interface allows testing to be
performed automatically and
measurement data to be managed
collectively.
Integration to a handler. The
handler interface allows connection between an external handler
and the HP E4916A.
HP 41901A SMD π Network and its Load Capacitances
For Intermediate Inspection:
Consistent testing with final
inspection. Based on the same
measurement method as that for
the network analyzer, the
HP E4916A provides measurement
results that can properly correlate
with those obtained with the
network analyzer used for final
inspection.
Simple operation. The HP E4916A
simply requires trigger inputs to
provide the desired parameters.
Space saving. The HP E4916A can
fit anywhere in the clean room.
Also, it operates stand alone: no
need to use a PC for testing.
Self-contained. The HP E4916A
requires no external devices for Fr
(FL) and CI measurements and
Pass/Fail judgment.
For Frequency Adjustments:
EM (evaporation monitoring)
mode. The HP E4916A comes with
the EM mode for high-speed
monitoring.
Frequency trapping for automated
evaporation. You can specify
multiple trap frequencies to
determine the transition of the
resonance frequency. The
HP E4916A detects in real time
when the resonance frequency falls
into each of the trap frequencies
and outputs the results through the
handler interface for proper
controlling of the evaporator
operation.
For Measurement with Load
Capacitance:
Consistent testing with network
analyzer. When measuring a DUT
with load capacitance, the
HP E4916A can make it easy to
correlate your results with those
obtained with network analyzer,
for which same test fixtures and
load capacitance can be used.
HP 41900A π
Network Test Fixture and its Load Capacitances
3
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