Tektronix STP-37/FC Screw Terminal Panel Packing List PA-590 Rev. A User manual

STP-37/FC Screw Terminal Panel

WARNING

This accessory is not intended for use in circuits carrying voltages in excess of 30V RMS, 42.4V
peak, or 60VDC.

Description

The STP-37/FC screw terminal panel provides a screw terminal for each pin of a 37-pin data acquisition board connector,
which mates with the STP-37/FC via a C1800/M or equivalent cable. The contacts of the 37-pin connector are female, to
avoid personal or tool contact with signals from the screw terminals when the C1800/M cable is unplugged. The base of
the STP-37/FC is fully enclosed in plastic and the top is protected by a clear plastic cover. See Figure 1

38 numbered screw terminals,
each connected to the

Cover

corresponding connector pin
(except no. 38, unused)

37-pin female D connector

Figure 1. Layout of STP-37/FC screw terminal panel

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, 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

PA-590 Rev. A / 3-98

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 grounding screw
documentation.

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

The

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.

is present, connect it to safety earth ground using the wire recommended in the user

Installation safety

As described in the International Electrotechnical Commission (IEC) Standard IEC 664, the signal terminals are
Installation Category I and must not be connected to mains.

Do not connect switching cards directly to unlimited power circuits. They are intended to be used with impedance limited
sources. NEVER connect switching cards directly to AC mains. When connecting sources to switching cards, install
protective devices to limit fault current and voltage to the card.

Operators and maintainers of this product must be protected from electric shock at all times. The responsible body must
ensure that users are prevented access and/or insulated from every connection point. In some cases, connections must be
exposed to potential human contact. Product users in these circumstances must be trained to protect themselves from the
risk of electric shock. If the circuit is capable of operating at or above 1000 volts, no conductive part of the circuit may be

exposed.

Operation safety

Exercise extreme caution when a shock hazard is present. Lethal voltage may be present on cable connector jacks or test
fixtures. The American National Standards Institute (ANSI) states that a shock hazard exists when voltage levels greater
than 30V RMS, 42.4V peak, or 60VDC are present. A good safety practice is to expect that hazardous voltage is present

in any unknown circuit before measuring.

For maximum safety, do not touch the product, test cables, or any other instruments while power is applied to the circuit
under test. ALWAYS remove power from the entire test system and discharge any capacitors before: connecting or
disconnecting cables or jumpers, installing or removing switching cards, or making internal changes, such as installing or
removing jumpers.

Do not touch any object that could provide a current path to the common side of the circuit under test or power line (earth)
ground. Always make measurements with dry hands while standing on a dry, insulated surface capable of withstanding the
voltage being measured.

Do not exceed the maximum signal levels of the instruments and accessories, as defined in the specifications and operating
information, and as shown on the instrument or test fixture panels, or switching card.

If you are using a test fixture, keep the lid closed while power is applied to the device under test. Safe operation requires
the use of a lid interlock.

Instrumentation and accessories shall not be connected to humans.

Maintenance and service for safety

Inspect the connecting cables, test leads, and jumpers for possible wear, cracks, or breaks before each use.

Before performing any maintenance, disconnect all power sources and test cables.

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