Tektronix 80A02 User manual

80A02 EOS/ESD Protection
Module
Instructions
071-1317-01
www.tektronix.com
Safety Summary
To avoid potential hazards, use this product only
as specified.
While using this product, you may need to access
other parts of the system. Read the General Safety
Summary in other system manuals for warnings
and cautions related to operating the system.
To avoid fire or personal injury
Ground the product. This product is indirectly
grounded through the grounding conductor of the
mainframe power cord. To avoid electric shock,
the grounding conductor must be connected to
earth ground. Before making connections to the
input or output terminals of the product, ensure
that the product is properly grounded.
Observe all terminal ratings. To avoid fire or shock
hazard, observe all ratings and markings on the
product. Consult the host instrument documenta-
tion for further ratings information before making
connections to the host instrument.
Do not apply a potential to any terminal, including
the common terminal, that exceeds the maximum
rating of that terminal.
Do not operate with suspected failures. If you
suspect there is damage to this product, have it
inspected by qualified service personnel.
Do not operate in wet/damp conditions.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry.
Safety Terms In This Manual
CAUTION. Caution statements identify
conditions or practices that could result in
damage to the equipment or other property.
Safety symbols on the product
CAUTION
Refer to Product Manual
Environmental Considerations
This section provides information about the
environmental impact of the product.
Product End-of-Life Handling
Observe the following guidelines when
recycling an instrument or component:
Equipment Recycling. This product complies with
the European Union’s requirements according to
Directive 2002/96/EC on waste electrical and
electronic equipment (WEEE). For information
about recycling options, check the Support/Ser-
vice section of the Tektronix Web site (www.tek-
tronix.com).
Restriction of Hazardous Substances
This product has been classified as Monitor-
ing and Control equipment, and is outside the
scope of the 2002/95/EC RoHS Directive.
This product is known to contain lead and
hexavalent chromium.
Product Description
The 80A02 EOS/ESD Protection Module protects
the sensitive input stage of instruments (like the
sampling bridge of electrical TDR sampling
modules) from damage due to electro-overstress
(EOS) and electrostatic discharge (ESD) from the
device under test (DUT).
When used with the P8018 TDR probe, the
80A02 achieves static protection using normal
probing procedures — no intentional user
intervention (such as stepping on a foot switch) is
required. This eliminates instrument damage due
to human error in coordinating probing with
control switching to achieve static protection.
Installing and Removing the Module
Refer to the host instrument documentation for
proper installation and removal of modules.
CAUTION. Instrument modules are extremely
static sensitive. Always ground yourself
when handling modules.
The module is designed to install directly into any
available electrical sampling module slot of the
following Tektronix mainframes:
SDSA8200, TDS8000, TDS8000B, TDS8200
SCSA8000, CSA8000B, CSA8200, CSA800
Series, 11800 Series
Connector Care
Use extra care when attaching or removing SMA
connectors. Turn only the nut, not the cable. Align
the connectors carefully before turning the nut.
Use light finger pressure to make this initial
connection. Then tighten the nut lightly with a
wrench. Ideally, the SMA connectors should be
tightened to 56 N-cm (5 in-lb) with a torque
wrench.
Operation
The 80A02 protection module passes the test
signal from the DUT to a sampling module,
providing EOS and ESD protection to the input of
the sampling module.
The FROM DUT connector of the protection
module is initially held disconnected from the
sampling module and terminated through a 50 Ω
termination installed on the TO TERM connector,
to remove EOS and ESD from the DUT. When
the module is engaged, (via the control input), the
signal is passed from the FROM DUT connector
to the TO SAMPLER connector, and on to the
sampling module.
CAUTION. No EOS or ESD protection is
provided if the TO TERM connector is not
terminated with the 50 Ωtermination.
The following illustration is a typical
configuration when using the 80A02 module with
a Tektronix P8018 TDR Probe.
80A02 Module
Control
Input
Output
Sampling module
Input
P8018 TDR probe
with actuating tip
DUT
50 Ω
termination
Controlling the Module
Two methods for controlling the switching of the
80A02 module are Manual and Auto. A stereo
phone input plug, when connected to the Probe
*P071131701*
071131701

Copyright ©Tektronix. All rights reserved.
controller input, can support both manual and auto
control; a mono phone plug can support manual
control only. See the illustrations below.
Auto
control
Manual
control
Ground
Manual
control
Ground
Manual Control. Manual control of the 80A02
module consists of either grounding or unground-
ing the manual control section of either a stereo or
mono mini phone plug.
SUngrounded, the 80A02 module connects the
FROM DUT connector to the TO TERM con-
nector, removing static charge.
CAUTION. No EOS or ESD protection is
provided if the TO TERM connector is not
terminated.
SGrounded, the 80A02 module connects the
FROM DUT connector to the TO SAMPLER
connector, passing the signal from the DUT
along to a connected sampling module.
The Tektronix P8018 TDR probe provides manual
control of the 80A02 module.
Auto Control. Auto control of the 80A02 module
consists of applying a logic low or high signal to
the Auto control portion (middle conductor
section) of a stereo phone plug. The manual
control section of the stereo phone plug must be
left open (no connections) or grounded to avoid
accidentally engaging the 80A02 module (a mono
phone plug cannot provide Auto control):
SWith a logic low, the 80A02 module connects
the FROM DUT connector to the TO TERM
connector, removing static charge.
SWith a logic high, the 80A02 module con-
nects the FROM DUT connector to the TO
SAMPLER connector, passing the signal from
the DUT along to a connected sampling mod-
ule.
Functional Check
Use the following procedures to check the
functionality of the 80A02 Protection Module.
Required equipment: Host instrument for the
80A02, stereo mini phone plug (with exposed
connections), and 0 V to 5 V DC variable voltage
supply.
1. Install the 80A02 Protection Module in an
appropriate host instrument slot.
2. Insert the stereo mini phone plug into the
PROBE CONTROLLER connector.
3. Check the manual control operation of the
80A02 module:
a. Identify the manual control connection
portion of the phone plug and short it to
the ground.
b. Listen for the relay to operate in the
80A02 module and that the ENGAGED
LED lights.
c. Disconnect the ground connection.
4. Check the auto control operation of the
80A02 module:
a. Identify the auto control connection
portion of the phone plug, set the voltage
supply to 0 V, and connect the supply to
the auto control connection.
b. Check that the relay in the 80A02 module
does not activate (no click sound) and that
the ENGAGED LED does not light while
adjusting the DC supply from 0 to
300 mV.
c. Check that the relay in the 80A02 module
activates (click sound) and that the
ENGAGED LED lights while adjusting
the DC supply from 1 to 5 V.
d. Disconnect the voltage supply.
5. Remove the mini phone plug.
Ground
Auto
control
Auto
control
Manual
control
Ground
Manual
control
Specifications
Table 1: Environmental and Mechanical
Characteristic Specification
Weight 0.4 kg (0.6 lbs)
Dimensions
Height 25 mm (1.0 in)
Width 79 mm (3.1 in)
Depth 135 mm (5.3 in)
Environmental conditions Refer to the host instrument
specifications
Temperature
Operating +10 _Cto+40_C
Upper rating derates to
+35 _C for all sampling
modules on 2 meter extender
cable
Non-operating -- 2 2 _C to +60 _C
Humidity
Operating 20% to 80% relative humidity
with a maximum wet bulb
temperature of +29 _Cator
below +40 _C,
non-condensing. (Upper limit
derates to 45% relative
humidity at +40 _C.)
Non-operating 5% to 90% relative humidity
with a maximum wet bulb
temperature of +29 _Cator
below +60 _C,
non-condensing. (Upper limit
de-rates to 20% relative
humidity at +60 _C.)
Table 1: Environmental and Mechanical
(continued)
Characteristic Specification
Altitude
Operating 3,000 m (9,843 ft)
Non-operating 12,190 m (40,000 ft)
Electromagnetic
Compatibility
Refer to the host instrument
specifications for modular
specifications
Table 2: Electrical
Characteristic Specification
Applicable mainframes DSA8200, TDS8000,
CSA8000, TDS8000B,
CSA8200, TDS8200,
CSA8000B, 11800, and
CSA803
Number of channels One
Channel connectors Precision 26 GHz SMA
female connectors
Interface connector Stereophonic mini plug with
the center conductor
designated as the manual
probe interface and outer
conductor as the logic control
interface
Input impedance 50 Ω
Absolute maximum input
signal level (RF signals)
±2 V peak
Module analog bandwidth DC to 26 GHz
Manual control threshold
(Auto contol terminal
unpowered)
Module engaged when
manual control input has a
resistive path to ground of
<100 kΩ, open circuit for
stand-by protection mode
Automated logic control
threshold (Manual control
terminal open)
<0.3 V: stand-by protection
mode
>1.0 V: Measurement
engaged mode
Pilot lights Power and engaged LED
pilot lights indicate the
corresponding states
Module switching time 20 ms typical
40 ms maximum
Accessories
The following items are included with the 80A02
Protection module:
S80A02 Instructions 071-1317-xx
SSMA 50 Ωtermination 015-1022-01
S12 inch 20 GHz SMA cable 174-4878-xx
Warranty Information
For warranty information, go to
www.tektronix.com, click Support, and then select
Look Up Tektronix Warranty.