Model STA-3108A3
Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
(440) 248-0400
Fax: (440) 248-6168
www.keithley.com
Figure 1
Model STA-3108A3
Packing List
Introduction
This document contains information necessary to successfully install your hardware.
WARNING
The STA-3108A3 is not intended for use in circuits carrying voltages in excess of 30V
RMS, 42.4V peak, or 60VDC.
PA-668 Rev. B / 7-02
Descriptions
The STA-3108A3 has four 26-pin connectors that map the required signals to enable the attachment of up to four MB-02 backplanes providing a total of 64 channels. See Figure 2. Channel selection jumpers are provided for each of the four connectors.
The screw terminals on the STA-3108A3 screw terminal connector let you connect field wiring to another board such as a
KPCI-3108 board using an IEEE-1284 C-C cable. The screw terminals are labeled from 1 to 36 and correspond directly to the
functions of the pins on the main I/O connector on the KPCI-3108 board. For example, if pin 24 is assigned to the analog
function OP0, use screw terminal 24 to attach a hardware output 0. Refer to the User’s Guide for the board to which you are
connecting the STA-3108A3 for detailed wiring information.
The STA-3108A3 panel has rubber feet and mounting holes and includes a plastic case that protects the underside of the board.
The case can be mounted in a standard DIN rail using the DIN rail mounting kit (not included).
Figure 2
STA-3108A3 cable connections
MB-02 MB-02 MB-02 MB-02
KPCI
BOARD
WARNING
STA-3108A3
36
3132333435 30 29 28 272625 24 23 22 21 20 19
18
J2
J3
J2AJ2B
J2D
J2C
J1B J1A
18
J3AJ3B
J3D
J3C
36
C-2600
3132 30 29 28 272625 24 23
98765
J2
J3
1314 12 11 10
18
36
36
J5
J4
J1A
1
19
CAB-1284CC
ANALOG
CAB-1284CC
DIGITAL
When using the STA-3108A3, the maximum voltage allowed is 30V RMS, 42.4V peak,
or 60VDC. Exceeding this limit could cause an insulation failure and shock hazard.
STA-3108A3
987654321
1314151617 12 11 10
18
36
J5
J4
J5AJ5B
J5D
J5C
J4AJ4B
J4D
1
J4C
19
CAUTION
Although the STA-3108A3 is rated for 60 volts peak-to-peak, the board to which it is
connected may be rated for a much lower voltage. For example, the KPCI-3108 analog
inputs can only tolerate 35 volts peak without damage, and digital I/O will be damaged by voltages above +5V.
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Specifications
Voltage: 30V RMS, 42.4V peak, or 60VDC
Current: 1 amp maximum
Environment: –30˚C to +85˚C
Safety precautions
Observe the following safety precautions 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 definitions
The types of product users are:
Responsible body is the individual or group responsible for the use and maintenance of equipment, and for ensuring that oper-
ators 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.
!
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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