Insertion Loss; Return Loss - Agilent Technologies Option H48 Multiport Test Set Z5623A User's And Service Manual

Insertion Loss

For this measurement, Port 1 of the network analyzer will be connected
to one of the test ports of the test set, and Port 2 of the network
analyzer will be connected either to the Reflection port or to the
Transmission port of the test set. By definition,
Insertion Loss = − S
where Insertion Loss and S
The network analyzer will be configured to measure S
will be set up in such a way that each limit equals the negative of the
corresponding insertion loss test limit shown in
if an insertion loss test limit happens to be 1.0 dB, the corresponding
limit will be −1.0 dB.
S
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Insertion loss is a maximum spec. Therefore, each S
up as a minimum limit. For example, if an insertion loss test limit
happens to be 1.0 dB, the limit table will be set up so that S
above −1.0 dB in order for the instrument to pass. (S
zero or negative because the test set provides no amplification. In units
of dB, S can range from zero to minus infinity.)
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Return Loss

For this measurement, Port 1 of the network analyzer will be connected
to one of the test ports of the test set, and Port 2 of the network
analyzer will be connected to the Reflection port of the test set. By
definition,
Return Loss = − S
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where Return Loss and S
The network analyzer will be configured to measure S
will be set up in such a way that each limit equals the negative of the
corresponding return loss test limit shown in
a return loss test limit happens to be 20 dB, the corresponding S
will be −20 dB.
Return loss is a minimum spec. Therefore, each S
as a maximum limit. For example, if a return loss test limit happens to
be 20 dB, the limit table will be set up so that S
in order for the instrument to pass. (S
because the test set provides no amplification. In units of dB, S
range from zero to minus infinity.)
Agilent Technologies Z5623A Option H48
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are both in units of dB.
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are both in units of dB.
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Table
will always be zero or negative
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Performance Verification
Test Strategy
. Limit lines
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Table 5-2. For example,
limit will be set
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must be
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will always be
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. Limit lines
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5-2. For example, if
limit
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limit will be set up
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must be below −20 dB
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can
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5 -5