Datasheet

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A GREATER MEASURE OF CONFIDENCE
Scanning Capabilities — Choice of Communication Interfaces
SWITCH/MEASURE SYSTEMS
10
Integra Series Multimeter/Switch Systems
• Scan interval: The user can set the interval after which each succeeding scan will begin. Scan inter-
vals can be set anywhere from 0 to 99 hours in increments of 1ms.
• Scan sequence/omitting channels: In addition to scanning in numerical sequence, the system can
be programmed to skip any channels that are not required for a particular test. This avoids recording
irrelevant data and speeds the data acquisition process. This makes scanning both faster and more flex-
ible.
• Ratio (DCV only): The instrument can calculate and display the ratio of measurements of paired
channels. Ratios can only be determined for specific channel pairs, depending upon the input module
used. For example, channel pairs on the Model 7702 include Channels 1 and 21, Channels 2 and 22,
etc. Hi/Lo limits are fully supported.
• Channel average (DCV and thermocouple only): The instrument can calculate and display the
average of two channel measurements. As with ratio calculations, only paired channels can be aver-
aged. Hi/Lo limits are fully supported.
Choice of Communication Interfaces
RS-232
All the Integra Series mainframes include RS-232 ports for computer control. RS-232 is a low cost point-to-
point interface, allowing a computer to interface with a one mainframe per port at distances up to several
hundred meters, depending on the baud rate setting. Slow baud rates can be run long distances, while
the fastest baud rate settings are limited to several meters maximum distance. The Model 2700 and 2750
can receive commands and transfer data via RS-232 at various baud rates up to 19.2kBaud. The Model
2701 offers data rates up to 115.2kBaud with hardware handshaking.
GPIB
The Model 2700 and 2750 both offer a GPIB port. GPIB provides higher speed data transfers (up to
1Mbyte/sec.) than RS-232, and allows up to 32 devices to addressed from a single GPIB controller card in
a host computer. The maximum cabling distance for the GPIB interface is 2 meters between each GPIB
connection. Up to 20 total meters of cable may be connected to a single controller card.
Ethernet
The Model 2701 offers a 10/100 BaseT Ethernet connection for high speed and long distance communica-
tion between a computer and a virtually infinite number of instruments. Any PC with an Ethernet port can
connect to a single Model 2701 in a point-to-point configuration, to multiple 2701s through a hub, or to
multiple 2701s distributed on a network. See the system configuration section on page 35 for more
details on Ethernet connections.
The Model 2701 Ethernet port uses the industry-standard TCP/IP socket interface. This provides data
rates up 100Mbits/sec. and allows the instrument to be located up to 100 meters from the nearest
computer or network hub in hardwired systems and miles in wireless Ethernet systems. The maximum
distances between a control PC and the instruments are limited only by the size of the network. The
instrument also provides a built-in diagnostic web page for easy remote access to the 2701. Entering the
instrument’s IP address in the URL line of Microsoft
®
Internet Explorer
®
will allow communication with
and control of the 2701. This Web page allows users to read and set network parameters, such as IP
address, subnet mask, gateway, MAC address, and calibration dates, and to send commands to and query
data from the 2701.