Front Panel Operation
3-64
SCAN COUNT = 00001
The above scan count indicates that the instrument will
scan one time.
2. To program for a different count (1 to 99999), use the
cursor keys ( and ) to select the digits, and the
RANGE ▲ and ▼ keys to increment and decrement the
digits.
3. With desired count value displayed, press ENTER. The
display returns to the SETUP SCAN LAYER menu.
CONTROL
Use this menu item to enable or disable the source bypass.
The source bypass is used to bypass the scan event on the
first pass through the scan layer. With the SETUP SCAN
LAYER menu displayed, select this menu item by placing
the cursor on CONTROL and pressing ENTER. The follow-
ing menu is displayed:
TRIGGER CONTROL
SOURCE ACCEPTOR
SOURCE: With this selection, the source bypass is enabled.
The scan event will be bypassed on the first pass through the
scan layer. This allows operation to proceed into the measure
layer without having to wait for the programmed event.
ACCEPTOR: With this selection, the source bypass is dis-
abled.
3.7.4 Configuring the arm layer
The arm layer is used for the following operations:
• To select the arming event (SOURCE) for the instru-
ment.
• To designate the number of times the instrument is to be
armed (COUNT).
• To enable or disable the Source Bypass.
Perform the following steps to display the arm layer menu:
1. Display the CONFIGURE TRIGGER menu by pressing
the CONFIG key and then the TRIG key.
2. Use the cursor keys ( and ) to place the cursor on
ARM and press ENTER to access the following menu:
SETUP ARM LAYER
SOURCE COUNT CONTROL
SOURCE
This menu item selects the event that controls the arm
source. To select it, place the cursor on SOURCE and press
ENTER. The following menu is displayed:
SELECT ARM SOURCE
IMMEDIATE EXTERNAL MANUAL
GPIB TRIGLINK HOLD
IMMEDIATE: With this selection, operation passes imme-
diately into the scan layer.
Select immediate triggering from the SELECT ARM
SOURCE menu by placing the cursor on IMMEDIATE and
pressing ENTER. The instrument returns to the SETUP arm
layer menu.
EXTERNAL: With this selection, external triggers are used
to control the arm source. A trigger stimulus applied to the
Model 2001 passes operation into the scan layer. The exter-
nal trigger is applied to the rear panel “EXTERNAL TRIG-
GER” BNC connector. See paragraph 3.7.6 for detailed
information on external triggering.
NOTE
Front panel TRIG key (see MANUAL) is
active with external triggering selected.
Pressing the TRIG key passes operation
into the scan layer.
To select external triggering from the SELECT ARM
SOURCE menu, place the cursor on EXTERNAL and press
ENTER. The instrument returns to the SETUP arm layer
menu.
MANUAL: With this selection, the front panel TRIG key
controls the arm source. Operation passes into the scan layer
when the TRIG key is pressed.
NOTE
The front panel TRIG key is active when
EXTERNAL, GPIB, or TRIGLINK is se-
lected.
To select manual triggering (TRIG key) from the SELECT
ARM SOURCE menu, place the cursor on MANUAL and
press ENTER. The instrument returns to the SETUP arm lay-
er menu.
GPIB: With this selection, bus triggers control the arm
source. Operation passes immediately into the scan layer
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