Tektronix STA-U Universal Screw Terminal Accessory Packing List PA-591 Rev. B User manual

Keithley Instruments, Inc.

28775 Aurora Road
Cleveland, Ohio 44139
[phone]
Fax: [phone]
www.keithley.com

WARNING This accessory is not intended for use in circuits carrying voltages in excess of 30V RMS,

42.4V peak, or 60VDC.

ST A-U Universal Screw Terminal Accessory

Packing List

Description

The STA-U screw terminal accessory interfaces Keithley data acquisition boards with multiple types of input/output (I/O) con­nections. All interconnections are provided on a printed circuit board, mounted in a covered plastic box. The pins of three D
connectors are connected to each other and to screw terminals and solder pads. An isolated matrix of 21 x 13 solder pads pro­vides for breadboarding of small circuit circuits. Eleven unallocated screw terminals, each connected to an adjacent pair of sol­der pads, allow user connections, such as breadboard power input, etc. See Figure 1 and refer to Table 1.

Figure 1

Layout of the STA-U Universal Screw Terminal Accessory

First 37-pin male
D connectors

Solder pad
matrix

Screw terminal and

25-pin female
D connector

Table 1

Correspondence of numbered pins, screw terminals and solder pads

Termination Corresponding pin/screw terminal/solder pad numbers

Numbered screw terminals and adjacent two solder pads 1 2 3 …... 25 …... 36
First 37-pin male D connector 1 2 3 …... 25 .….. 36
Second 37-pin male D connector 1 2 3 .….. 25 …... 36
25-pin female D connector 1 2 3 …... 25
Unnumbered user screw terminals and adjacent solder pads Each terminal and adjacent two solder pads are connected.

There are no other connections.

Solder pad matrix of (21 x 13 pads), for breadboarding No connections

adjacent two solder
pads (typical)

PA-591 Rev. B / 7-01

Specifications

Voltage: 30V RMS, 42.4V peak, or 60VDC
Current: 1A maximum
Screw terminal wire size capacity: 12-22 AWG

Safety precautions

The following safety precautions should be observed before using this product and any associated instrumentation. Although
some instruments and accessories would normally be used with non-hazardous voltages, there are situations where hazardous
conditions may be present.

This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions
required to avoid possible injury. Read the operating information carefully before using the product.

General safety definitions

The types of product users are:

Responsible body is the individual or group responsible for the use and maintenance of equipment, for ensuring that the equip-

ment is operated within its specifications and operating limits, and for ensuring that operators are adequately trained.

Operators use the product for its intended function. They must be trained in electrical safety procedures and proper use of the

instrument. They must be protected from electric shock and contact with hazardous live circuits.

Maintenance personnel perform routine procedures on the product to keep it operating, for example, setting the line voltage

or replacing consumable materials. Maintenance procedures are described in the manual. The procedures explicitly state if the
operator may perform them. Otherwise, they should be performed only by service personnel.

Service personnel are trained to work on live circuits, and perform safe installations and repairs of products. Only properly

trained service personnel may perform installation and service procedures.

If a screw is present, connect it to safety earth ground using the wire recommended in the user documentation.

!

The symbol on an instrument indicates that the user should refer to the operating instructions located in the manual.

The symbol on an instrument shows that it can source or measure 1000 volts or more, including the combined effect of
normal and common mode voltages. Use standard safety precautions to avoid personal contact with these voltages.

The WARNING heading in a manual explains dangers that might result in personal injury or death. Always read the associated
information very carefully before performing the indicated procedure.

The CAUTION heading in a manual explains hazards that could damage the instrument. Such damage may invalidate the
warranty.

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