Keithley 2001-TCSCAN User Manual

Operation
3-9
3.6 Closing and opening channels
Individual scanner card channels are closed and opened us-
ing the CHAN key. The following paragraphs discuss closing
and opening channels from the front panel as well as with
bus commands.
3.6.1 Closing channels
■ Front panel
Use the front panel CHAN key to close specific channels as
follows:
1. From normal display, press the CHAN key. The instru-
ment will display the following menu:
CHANNEL SELECTION
CLOSE-CHANNEL OPEN-ALL-CHANNELS
2. Select CLOSE-CHANNEL, then press ENTER. The
Model 2001 will display the following prompt:
ENTER CHANNEL# 01 (1-10)
3. Use the cursor and range keys to select the channel you
wish to close (1-10), then press ENTER. Any previously
closed channel will open, and the selected channel will
close.
NOTE
Once a channel is closed, use the or
key to manually scan through channels. Al-
so, you can use the NEXT display to view
three successive channels simultaneously.
■ IEEE-488 bus
Use the :ROUT:CLOSE command to close the desired
channel. For example, either of the following program
statements could be used to close channel 3.
HP BASIC
OUTPUT 716; “:rout:close (@3)”
QuickBASIC 4.5
PRINT #1, “output 16; :rout:close (@3)”
3.6.2 Opening channels
■ Front panel
Use the front panel CHAN key to open any closed channels
as follows:
1. Press the CHAN key. The instrument will display the
following menu:
CHANNEL SELECTION
CLOSE-CHANNEL OPEN-ALL-CHANNELS
2. Select OPEN-ALL-CHANNELS, then press ENTER.
The closed channel will open immediately.
■ IEEE-488 bus
Use the :ROUT:OPEN command to open the closed channel.
For example, either of the following program statements
could be used to open channel 3:
HP BASIC
OUTPUT 716; “:rout:open (@3)”
QuickBASIC 4.5
PRINT #1, “output 16; :rout:open (@3)”
(You can also use :ROUT:OPEN:ALL or :ROUT:OPEN ALL
to open channels.)
3.7 Scanning channels
Channels are scanned by configuring channels and program-
ming the Model 2001/2002 to perform a scan. The following
paragraphs outline step-by-step procedures for performing ba-
sic scanning from the front panel and over the IEEE-488 bus.
3.7.1 Front panel scanning
Step 1: Configure channels
Use CONFIG-CHAN to select the measurement functions
for each of the scanner channels as follows:
1. Press CONFIG-CHAN. The instrument will display the
following menu:
CONFIGURE CHANNELS
INTERNAL-CHANS EXTERNAL-INPUTS

Keithley 2001-TCSCAN Specifications

General

Model	2001-TCSCAN
Category	Test Equipment
Manufacturer	Keithley
Scanning Capability	Yes
Temperature Measurement	Yes
Temperature Sensor Compatibility	Thermocouples, RTDs
DC Voltage Range	1000 V
Interface	GPIB, RS-232
Type	Digital Multimeter with Temperature Scanning

Summary

Card Connections and Installation

2.2 Handling Precautions

2.3 Connections

Covers the basics for connecting external circuitry to the scanner card.

2.4 Typical Connection Schemes

2.5 Card Installation and Removal

Summarizes procedures for installing and removing the scanner card from the DMM.

Operation

3.2 Signal Limitations

3.4 Front Panel Scanner Controls

3.7 Scanning Channels

Step-by-step procedures for configuring and performing scans from front panel and IEEE-488.

3.8 Temperature Measurements

Procedures for making temperature measurements using thermocouples and RTD probes.

3.13 Measurement Considerations

Discusses effects that can impact low-level measurement accuracy and how to minimize them.

Service Information

4.2 Handling and Cleaning Precautions

4.3 Performance Verification

4.4 Calibration

Describes calibrating the card's reference junction and thermistor probe for accuracy.

4.7 Troubleshooting

Presents troubleshooting tips, including relay replacement and access procedures.

Replaceable Parts