Keithley Benchtop Multimeter SOP

Power switch and special keys

Function and operation key (top row)

Function and operation key (middle & bottom row)

Range keys

Display

Input selector

Probe inputs

Push the power switch to turn on the 2700.

SHIFT - Use to select a shifted function or operation.

LOCAL - Cancels GPIB remote mode.

Connect the probes as shown.

Make sure the INPUT switch is in the F position.

If the display shows a switching channel is closed, press OPEN to open it.

Select the DCV for DC voltage or ACV for AC voltage.

Use RANGE keys to select a range consistent with the expected voltage.

Connect the probes to the white and black inputs on the right.

Make sure the INPUT switch is in the F position.

If the display shows a switching channel is closed, press OPEN to open it.

Select DCI for direct current or ACI for alternating current.

Use the RANGE keys to select a measurement range consistent with the expected current or use AUTO.

Insert the probes into the circuit such that current can flow through the machine and be measured.

2 wire mode is typically for >1kΩ measurements.

Connect the probes to the red and black inputs on the right.

If the display shows a switching channel is closed, press OPEN to open it.

Select 2Ω for the 2 wire resistance function.

Use the RANGE keys to select a measurement range consistent with the expected resistance, or press AUTO for auto-ranging.

Resistance will be measured between the two probes.

4 wire mode is typically for <=1kΩ measurements.

Traditional ohm meters (2Ω mode) usually apply a small current and measure the resulting voltage to calculate resistance. 4 wire mode utilizes a voltmeter in parallel with an ammeter to calculate resistance. This reduces the severity of the probes' internal resistance on measurement and is called a Kelvin connection.

Connect probes in all four red and black inputs.

If switching channel is presently closed (displayed), press OPEN to open it.

Select 2Ω.

Use the RANGE keys to select a measurement range consistent with the expected resistance, or press AUTO for auto-ranging.

Measure the device with both red leads on one side and both black leads on the other.

DCV - DC voltage measurement function.

ACV - AC voltage measurement function.

DCI - Direct current measurement function.

ACI - Alternating current measurement function.

Ω2/Ω4 - 2/4-wire resistance measurement function.

FREQ - Frequency measurement function.

TEMP - Temperature measurement function.

MATH - Configures and controls mX+b, percent, or reciprocal (1/X) calculation.

OUTPUT - Configures and controls digital and audio (beeper) output for limits.

RATIO - Enables/disables channel ratio.

CH-AVG - Enables/disables channel average.

CONT - Configures and controls continuity test.

OCOMP - Enables/disables offset compensated ohms with Ω4 function selected.

PERIOD - Selects period measurement function.

SENSOR - Configures temperature measurements.

EX TRIG - Selects external triggering (front panel, bus, trigger link) as the trigger source.

TRIG - Triggers a measurement when in external triggering (EX TRIG).

STORE - Sets the number of readings to store and enables the buffer.

RECALL - Displays stored readings and buffer statistics. Use the arrow keys to navigate through buffer.

FILTER - Enables/disables filter for selected function.

REL - Enables/disables relative for selected function.

< and > - Dual function—Manually scans switching channels. When in a menu, these keys control cursor position for making selections or change values.

DELAY - Sets user delay between trigger and measurement.

HOLD - Holds reading when the selected number of samples is within the selected tolerance.

LIMITS - Sets upper and lower limits for readings.

ON/OFF - Enables/disables limits.

TYPE - Configures and enables filter for selected function.

MONITOR - Selects and enable/disables monitor channel.

CH-OFF - Disables channel for a scan (must be in scan channel setup mode).

CARD - Identifies switching modules installed in mainframe. Set up switching modules that require configuration. View closed channels and channel settings for switching modules that require configuration.

OPEN - Opens closed channel.

CLOSE - Closes specified channel.

STEP - Steps through channels; sends a trigger after each channel.

SCAN - Scans through channels; sends a trigger after last channel.

DIGITS - Sets display resolution for all functions.

RATE - Sets measurement speed (fast, medium, or slow) for all functions.

EXIT - Cancels selection, moves back to measurement display.

ENTER - Accepts selection, moves to next choice or back to measurement display.

SAVE - Saves up to four instrument setups for future recall, and selects power-on setup.

SETUP - Restores a default setup (factory or *RST) or a saved setup. Enables/disables buffer auto clear, auto scan, and auto channel configuration. Sets timestamp, date, and time. Displays serial number of Model 2700.

CONFIG - Selects and configures a simple scan or an advanced scan.

HALT - Disables step/scan.

TEST - Selects the calibration menu, display test or the key-press test.

LSYNC - Enables/disables line cycle synchronization. When enabled, noise induced by the power line is reduced at the expense of speed.

GPIB - Enables/disables GPIB and selects address.

RS-232 - Enables/disables RS-232 interface; selects baud rate, flow control, and terminator.

Δ and ∇ - Dual function. Selects the next higher/lower measurement range for the selected function. When in a menu, these keys make selections or change values.

AUTO - Enables/disables autorange for the selected function.

Front panel inputs (out position)

Switching module inputs (in position)

INPUT HI and LO - Used for DCV, ACV, Ω2, CONT, FREQ, PERIOD, and TEMP measurements.

SENSE HI and LO - Use with INPUT HI and LO for Ω4 and RTD TEMP measurements.

AMPS - Use with INPUT LO for DCI and ACI measurements.