Operation
3-4
3.4.2 Configure channels (CONFIG-CHAN)
CONFIG-CHAN allows you to:
• Select measurement functions for internal (Model
2001-TCSCAN) channels.
• Select measurement functions for channels in an exter-
nal scanner used with the Model 2001/2002.
• Define an alternate measurement function which can
then be assigned to specific channels.
Pressing CONFIG then CHAN will display the following
menu:
CONFIGURE CHANNELS
INTERNAL-CHANS EXTERNAL-INPUTS
SAVE-ALT-FCN RESTORE-ALT-FCN
■
INTERNAL-CHANS
The INTERNAL-CHANS selection allows you to set the
measuring function for each of the Model 2001-SCAN
channels while scanning. When this selection is made, the
following submenu will be displayed:
SET INTERNAL CHANS
1=DCV 2=DCV 3=DCV 4=DCV 5=DCV
6=DCV 7=DCV 8=DCV 9=DCV 10=DCV
With this menu displayed, use the cursor keys to select the
channel, and use the up arrow and down arrow (range) keys
to select the desired measuring function for each channel:
DCV: DC volts
ACV: AC volts
Ω
2W: 2-wire ohms
Ω
4W: 4-wire ohms
FRQ: frequency
TMP: temperature
ALT: alternate function (see below)
JN1 – JN5: Reference junctions
--- : None
ΩΩ
ΩΩ
4W function:
The
Ω
4W function is valid only for chan-
nels 2-5. If selected, “PRD” (paired) will be shown on the
corresponding paired channel 7-10. Once
Ω
4W is selected
on channels 2 to 5, changing the assignment to a different
function will de-assign the paired channel and change the
function to “---” (none).
CAUTION
Four-wire functions should not be used
with channels 1 and 6.
TMP function:
Similarly, the TMP selection is valid only
for channels 2-5 if the RTD temperature sensor is a 4-wire
type. If a 2-wire RTD type is used, channels 6-10 could be
assigned to the TMP function, but if the sensor type is later
change to 4-wire RTD, any channel from 6-10 will then be
set to “---” (none). Thermocouple TMP measurements can
be assigned to channels 2-10.
No function (---):
Selecting none (---) effectively removes
that channel from the scan list. When scanning, the instru-
ment will skip any channels that have no function defined.
JN functions:
JN1 through JN5 are used to assign a refer-
ence junction to a channel. With the Model 2001-TCSCAN,
the reference junction must be assigned to channel 1.
■
EXTERNAL-INPUTS
This menu item allows you to select measurement functions
for an external scanner used with the Model 2001/2002 Mul-
timeter. See the Model 2001/2002 Operator’s Manual for de-
tails.
■
SAVE-ALT-FCN/RESTORE-ALT-FCN
An ALT (alternate) function is one that cannot be directly ac-
cessed with one of the eight function keys. For example, as-
sume that you select the ACV peak function using CONFIG-
ACV. You can then use SAVE-ALT to assign peak ACV to
the ALT function. Whenever the ALT function is encoun-
tered in the scan list, the instrument will switch to the ACV
peak function for that channel even if the instrument is mea-
suring a different type of ACV (RMS for example).
You can also use the ALT function to store an existing main
function but with a different set of operating parameters. For
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