Datasheet

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A GREATER MEASURE OF CONFIDENCE
Channel Configuration Capabilities — Scanning Capabilities
SWITCH/MEASURE SYSTEMS
9
Integra Series Multimeter/Switch Systems
Channel Configuration Capabilities
Measurement functions: An Integra system can measure many different parameters: DC voltage, DC
current, AC voltage, AC current, 2-wire , 4-wire , voltage clamped (2750 only), temperature
(using thermocouples, RTDs, and thermistors), frequency, period, and continuity.
Math functions: A variety of math functions are available at the push of a button, including channel
average and ratio, mX+b scaling, min, max, average and standard deviation. All are available on a per-
channel basis.
Measurement setup: Each channel can be configured independently for making measurements.
Selectable channel parameters include:
Speed
•Range
Resolution
Number of power line cycles
(NPLC)
Math functions
•Ratio calculation
Individual “m” and “b” val-
ues in mX+b format
Channel averaging
•Hi-Low limits
Resistance measurement
method (2- or 4-wire)
Offset compensation
CJC type
Thermistor type
Thermocouple type
•RTD type
•Voltage clamped ohms
(Dry Circuit, 2750 only)
DUT-to-modules connections: It is easy to connect the device under test to the switch/control mod-
ules. The 7703 and 7705 modules use dual 50-pin “D-sub” input connectors for secure, quick connec-
tions. The 7701, 7707, and 7709 modules use “D-sub” connectors that are compatible with off-the-shelf
standard ribbon cable. These connectors are especially convenient for rapid system setup. When
greater connection flexibility is required, the 7700, 7702, and 7708 modules provide oversize screw
terminal connectors that simplify setup by eliminating the need to handle small connectors. The stan-
dard wires used are 20AWG. Model 7710 uses removable terminal blocks to provide the simplicity of
screw terminal connections with the speed of mass terminated cables. The 7711 and 7712 RF modules
use industry standard SMA connectors.
Mainframe-to-modules connection: Secure screws connect the modules to the mainframe. At
power-up, the mainframe detects any attached modules automatically, which minimizes set-up time. All
signals are routed internally from module to mainframe.
Front/rear switch: The front inputs are used for manual probing, troubleshooting, and calibration. A
switch on the front panel makes it easy to shift between the front and rear inputs. This eases setting
up the equipment and speeds verifying proper setup and connections prior to automating the
measurement.
Scanning Capabilities
•Relay Closure Counts: Relay closure counts are logged every time a channel is closed. These counts
are permanently written to the EEPROM on the module at a user-settable time interval (factory default
of 10 minutes) or whenever the counts are queried. Valid intervals (set in integer number of minutes)
are between 1 and 1440 minutes (24 hours). Relay closures are counted when a relay cycles from open
to closed state.
Open Sense Lead Indication. The system can alert the user if there is a sense lead disconnection
on any channel. In this case, the front panel display will show “OVERFLOW.” Therefore, the system
does not need other equipment or calibration to inspect the broken connection or failed relay on the
scanner card. In addition, the system will protect against erroneously passed conditions.
Scan count: An Integra Series system can be programmed to run a given number of scans (up to
450,000) automatically and to record readings into the internal memory buffer. The instrument also
allows programming the trigger source used to initiate each scan. (Refer to page 11 for more informa-
tion on triggering.)