Front Panel Operation
3-98
3.11.5 Using CONFIG-SCAN to configure
scanning
CONFIG-SCAN operation
CONFIG-SCAN allows you to configure the following scan-
ner aspects:
• Select the internal or external channel list for scanning.
• Enable ratio and delta operation.
SCAN OPERATION menu
Table 3-41 summarizes the SCAN OPERATION menu
structure, which is discussed in more detail in the following
paragraphs. See paragraph 3.3 for more information on menu
navigation.
Pressing CONFIG-SCAN will display the following menu:
SCAN OPERATION
INTERNAL EXTERNAL RATIO DELTA
These choices select the action the instrument will take when
it is triggered.
INTERNAL:
This selection enables scanning with the inter-
nal scanner card. When this selection is chosen, the Model
2001 will change to the function specified for the first chan-
nel and then close the channel and take a reading. When the
next trigger is received, the instrument will open the present
channel, change to the specified measuring function for the
next channel, and then close the channel and take a reading.
The process repeats until all channels in the list are scanned.
The instrument defaults to this selection if it detects a scan-
ner card on power-up.
EXTERNAL:
This menu selection enables scanning with an
external scanner card located in a switching mainframe. This
selection operates in a manner similar to INTERNAL except
that the internal scanner is not used. When this menu item is
selected, the instrument will immediately change to the se-
lected measuring function for the first channel. When the
multimeter is triggered, it will take a measurement and then
change to the measurement function for the next channel.
This process repeats until all channels in the scan list are
scanned.
The instrument defaults to this selection if it does not detect
a scanner card on power-up.
RATIO/DELTA:
Either of these two selections configures
the Model 2001 to measure the two specified internal scan-
ner channels and then compute the ratio or difference (delta)
between them. When RATIO or DELTA is selected, the in-
strument will close the scanner reference channel and then
wait for a trigger. When the reading is triggered, the unit will
make a measurement on the reference channel, switch to the
measurement channel, and then take a second measurement.
After measuring the measurement channel, the unit will
compute and display the ratio or delta value, and switch back
to the reference channel to wait for the next trigger.
NOTE
The result of the Ratio calculation is
always displayed in 7
½
-digit scientific
notation.
RATIO/DELTA channel selection:
To select channels for
RATIO and DELTA, select RATIO or DELTA as appropri-
ate.
Selecting RATIO will display the following menu and allow
you to set the measure or reference channel:
CONFIGURE RATIO
MEASURE REFERENCE FUNCTION
Selecting MEASURE will display the following:
RATIO MEASURE CHAN
CH12345678910
Use the cursor keys to select the measure channel, then press
ENTER.
Similarly selecting REFERENCE will display:
RATIO REFERENCE CHAN
CH12345678910
Again, use the cursor keys to select the channel to be used as
the ratio reference channel, then press ENTER.
Table 3-41
SCAN OPERATION menu structure
Menu item Description
INTERNAL Enables internal scanning.
EXTERNAL Enables external scanning.
RATIO
MEASURE
REFERENCE
FUNCTION
Enables ratio mode (internal).
Selects measure channel.
Selects reference channel.
Selects ratio function.
DELTA
MEASURE
REFERENCE
FUNCTION
Enables delta mode (internal).
Selects measure channel.
Selects reference channel.
Selects delta function.
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