Keithley 2182 Nanovoltmeter


Table of Contents

About this Machine

This instrument makes stable, low noise voltage measurements and characterizes low resistance materials and devices. There are two channels, channel 1 has a range from 1nV to 120V and channel 2 has a range from 10nV to 12V.

This SOP outlines basic voltage and temperature measurement setup and procedures.

If you need to operate this instrument at a higher level, please refer to the manual. Additional instrument operations include:

Machine Safety

How to Get Help

Ask a Manager if you have any questions.

Using this Machine

Front Panel:

  1. Special keys and power switch
    • “SHIFT” Use to select a secondary function/operation.
    • “LOCAL” Cancels GPIB remote mode.
    • “POWER” Power switch. In is on, out is off.
  2. Function and Operation keys

Top Row Primary

Top Row Secondary

Middle Row Primary

Middle Row Secondary

Bottom Row Primary

Bottom Row Secondary

  1. Range Keys
  1. Display Annunciators
  1. Input Connector
  1. Handle

Rear Panel:

  1. Analog Output: Provides a scaled non-inverting DC voltage. With analog output gain set to one, a full range input will result in a 1V analog output.
  2. Trigger Link: Eight-pin micro-DIN connector for sending and receiving trigger pulses among connected instruments. Use a trigger link cable or adapter, such as Models 8501-1, 8501-2, 8502, and 8503.
  3. RS-232: Connector for RS232 operation. Use a straight-through (not null modem) DB-9 shielded cable.
  4. IEEE-488: Connector for IEEE-488 (GPIB) operation. Use a shielded cable, such as the Models 7007-1 and 7007-2.
  5. Power Module: Contains the AC line receptacle, power line fuse, and line voltage setting. The instrument can be configured for line voltages of 100V/120V/220V/240VAC at line frequencies of 45Hz to 66Hz or 360Hz to 440Hz.

Setup

Cable Setup:

Before operating this instrument, make sure the line cord is connected to a properly grounded power receptacle. Inspect the connecting cables, test leads, and jumpers for possible wear, cracks, or breaks before each use.

To optimize your connections use copper-to-copper connections when possible and use silver solder on all solder connections to minimize thermal EMFs. If available, clean all connector terminals free of oxidation using a small amount of DeoxIT.

Choose your channels carefully. Remember that channel 1 voltage range is between 1nV to 120V and channel 2 voltage range is between 10nV to 12V. There should be a Model 2107 input cable already attached or near this instrument. Refer to the cable guide below to select your channels,

Voltage Measurement Setup:

For single channel voltage measurement, connect the terminals as seen below. If you are only using one channel, make sure that any floating terminals/wires are properly shielded and short protected.

For dual channel voltage measurements, connect the terminals as seen below.

Temperature Measurement Setup:

For temperature measurements using an internal reference, connect the terminals and your thermocouple as seen below.

For temperature measurements using an external reference, connect the terminals, your thermocouples, and set up an ice bath as shown below.

Voltage Temperature Measurement Setup:

Channel 1 should be used for voltage measurements since it supports a wider range of measurements, leaving Channel 2 to measure temperature.

For temperature measurements using an internal reference, connect the terminals and your thermocouple as seen below.

For temperature measurements using an external reference, connect the terminals, your thermocouples, and set up an ice bath as shown below.

Operation

Selecting operating modes:

Most of the front panel buttons have a dual operation or function. The label on a button indicates its primary function/operation. The label in blue above a button indicates its secondary function/operation. To select a primary function, press the button. To select a secondary function, press SHIFT first and then the desired button.

For example, press DCV1 to select the Channel 1 voltage measurement function. Press SHIFT then MX+B to choose the mX+b function.

Before Measuring:

Use the REL mode to null out any offsets.

  1. Connect your circuit as required (refer to setup), but leave the source disconnected.
  2. Select DCV1 (voltage channel 1), DCV2 (voltage channel 2), TEMP1 (temperature channel 1), or TEMP2 (temperature channel 2) as appropriate.
  3. Press REL to null any offsets.
  4. Repeat for other channels as needed.
  5. Proceed with connecting the source and making your measurements (see below).

Measuring Voltages:

Once your circuit is all wired up (see voltage measurement setup), you can follow the procedure below,

  1. Select channel and function. Press DCV1 to measure voltage on Channel 1. Press DCV2 to measure voltage on Channel 2.

  1. Select range. Use RANGE Up and Down keys to manually select the range. Or you can press AUTO RANGE (AUTO annunciator on) to enable auto range.

  1. View readings. You can observe the voltage readings on the front panel display.

Measuring Temperatures:

Once your circuit is all wired up (see temperature measurement setup), you can follow the procedure below,

  1. Configure temperature. Press SHIFT then TCOUPL

  1. Select your desired units to be degrees Celsius, Fahrenheit, or Kelvin (C, F, or K)

Insert image of front panel UNITS options

  1. Select your sensor option. Typically you will want to select “TCOUPLE” to perform temperature measurements at the thermocouple. If you want to measure the internal temperature of the 2182 instrument select “INTERNL”.

Insert image of front panel SENS options

  1. Select your TYPE. You will have the options, J, K, T, E, R, S, B, and N. This is the thermocouple type that you are using to measure the temperature. For more information on thermocouple types check out the Wikipedia article here or view this helpful chart.

Insert image of front panel TYPE options.

  1. Select your junction. This is referring to which of the two setups you are using to measure temperature. If you are using the internal reference junction (the first setup), you will want to select “INTERNL. If you are using the external reference junction (the second setup), you will want to select “SIM”. If you select “SIM” you will be prompted to enter the simulated reference temperature (i.e. the temperature of the ice bath).

Insert image of front panel JUNC options.

  1. Select your channel and function. Press TEMP1 to measure the temperature on Channel 1. Press TEMP2 to measure temperature on Channel 2.

  1. View Readings. You can observe the temperature readings on the front panel display.

Shutdown

Cleanup

Tips and Tricks