Tektronix YBAC1 User manual

YBAC1 Calibration Kit
Instructions

071-1144-01

Attaching and Removing Precision
Connectors

There is a correct way to attach and remove
precision connectors. Precision connectors are
exceptionally sensitive to mishandling.

CAUTION. Attaching or removing a precision

connector incorrectly will damage the
connector . You must attach and remove
precision connectors using the proper
procedure to avoid damaging the connector .

Precision connectors that have been damaged by
improper handing will not provide dependable
measurements.

Attaching precision connectors

To properly attach a precision connector to the
YBA250:

1. Gently push the connector straight onto the
Test P o rt. DO NOT turn the body of the
connector while pushing it onto the Test Port.

2. To secure the connector, hold the body of the
connector still while turning the nut until it is
finger-tight. Turn ONLY the nut to secure the
connector. See Figure 1.

Removing precision connectors

To properly remove a precision connector from
the YBA250:

1. Hold the body of the connector still while
turning the nut to loosen it. Turn ONLY the
nut to remove the connector.

2. Gently pull the connector straight away from
the RF input. DO NOT turn the body of the
connector while pulling it off the Test Port.

General Characteristics

Table 1: Precision Open characteristics

Connector

Frequency Range 0.1to18.0GHz

Phase Accuracy

Reflection Coefficient 0.99 (minimum)

Table 2: Precision Short characteristics

Connector

Frequency Range DC to 18.0 GHz

Type N

± 2.0 degrees

Type N

*P071114401*

071114401

Taking Care of the Calibration Kit

Proper care is critical to maintain the quality of the
standards.

Keeping the standards clean is the first part of
good care.

Keeping the standards in good mechanical
condition is the second and perhaps the most
important part.

The technique used to attach the standards to the
measurement instrument is a large part of the care
of these standards. When each standard is
connected, it must be held from turning, while the
outer nut is turned to tighten the standard. This
pushes the center pins straight together and
prevents damage. If the entire standard is turned,
the center pins are twisted against each other as
they go together. This can damage the center pins
in both the measuring instrument and in the
calibration standard. If the pins are damaged, the
accuracy of the calibration performed can be as
bad as if a non-precision adapter is used.

The third thing to consider is that any connector
that is part of a system under test may itself have
been damaged. The worst damage is a center pin
that is not in the center, or that is sticking out too
far from the connector. Be sure to check for this
kind of connector damage before connecting to
the test instrument, or permanent damage to the
test instrument can occur.

Hold body portion of the connector secure

from turning.

Tighten connector by turning only the bottom,

knurled portion of the connector.

Figure 1: How to attach a precision connector

Table 3: Precision Load characteristics

Connector

Impedance 50 Ω (nominal)

Frequency Range DC to 18.0 GHz

VSWR 1.02 from DC to 2.5 GHz

Type N

Physical Characteristics

YBAC1 weight -- 0.5 kg / 1.0 lbs.

Calibration -- 1 year cycle

Warranty -- 1 year

Copyright Notices

Copyright E Tektronix Inc.