Datasheet

www.keithley.com
1.888.KEITHLEY (U.S. only)
A GREATER MEASURE OF CONFIDENCE
SWITCH/MEASURE SYSTEMS
13
Integra Series Multimeter/Switch Systems
Saving/Recalling a Setup
All current set-up information for individual channels and the mainframe is battery backed and the meas-
urement data is stored in the non-volatile memory. Therefore, while the instrument is switched off, the
configuration for each channel is saved in the memory, then automatically recalled when the product is
switched on again. Up to five (four for Model 2700 and three for Model 2750) different sets of setups can
be recorded for each channel, so it’s unnecessary to set up each channel before a different test.
Power Failure Recovery
All set-up information is battery backed and data is stored in non-volatile RAM, so the system is immune
to power failures and can resume scanning where it stopped once power is restored. There is no need to
restart interrupted tests from the beginning. The scan resumption feature is user-selectable.
Channel Monitor
The channel monitor feature allows monitoring any specific input channel on the front panel display at
any time during a scan. The system can scan across channels very rapidly, so the channel monitor offers a
convenient way to view only the channel of interest without interrupting a scan.
Keithley’s patent-
ed measurement
engine provides
true 6
1
⁄2-digit (22-
bit) performance
under similar
conditions.
Typical 6
1
⁄2-digit
meters actually
deliver 5
1
⁄2-digit
(≤18-bit) perfor-
mance at faster
reading rates.
Figure 5. When the measurements matter, Keithley provides up to 10x better
performance at equivalent reading rates or up to 10x faster speeds at equivalent
measurement performance. Our patented A/D converter and high performance
signal conditioning circuitry make this possible.
Specification Conversion Factors
Percent PPM Digits Bits dB Portion of 10V
10% 100000 1 3.3 –20 1 V
1% 10000 2 6.6 –40 100 mV
0.1% 1000 3 10 –60 10 mV
0.01% 100 4 13.3 –80 1 mV
0.001% 10 5 16.6 –100 100 µV
0.0001% 1 6 19.9 –120 10 µV
0.00001% 0.1 7 23.3 –140 1 µV
0.000001% 0.01 8 26.6 –160 100 nV
0.0000001% 0.001 9 29.9 –180 10 nV
To A /D
Gain
x1
x10
x100
Servo
Correction
Amplifier
Input
+
–
Integra Series Performance
(6
1
⁄2-digit, 22-bit)
Figure 6.
Measurement Performance
Each Integra series system is a true 6
1
⁄
2-digit (22-bit) instrument
designed for high measurement precision. Its high precision
enhances measurement repeatability and stability.
Measurement performance is a key advantage of all of Keithley’s
products. The Integra Series is based on a number of advanced
technologies that improve its overall performance dramatically,
including:
• Patented A/D converter IC circuitry design to increase the reso-
lution, precision, and speed of measurement.
• Advanced signal conditioning hardware to filter out unwanted
noise and provide necessary isolation.
•A unique “servo” front end design (Figure 6). While conven-
tional DMMs typically measure and correct for the zero drift of
front-end circuitry, these systems’ servo front end eliminates
zero drift, which also eliminates the wasted measurement time
usually required to check zero, further increasing measurement
speed.
Saving/Recalling a Setup — Power Failure Recovery — Channel Monitor — Measurement Performance