Front Panel Operation
3-65
when a bus trigger (GET or *TRG) is received by the Model
2001. See Section 4 for detailed information on bus triggers.
NOTE
Front panel TRIG key (see MANUAL) is
active with bus triggering selected. Press-
ing the TRIG key passes operation into the
scan layer.
To select bus triggering from the SELECT ARM SOURCE
menu, place the cursor on GPIB and press ENTER. The dis-
play returns to the SETUP arm layer menu.
TRIGLINK: With this selection, the arm source is con-
trolled by the Trigger Link of the Model 2001. Trigger Link
is an enhanced trigger system that uses up to six lines to di-
rect trigger pulses to and from other instruments. Operation
passes into the scan layer when the Model 2001 receives a
trigger over the Trigger Link. See paragraph 3.7.7 for details
on using the Trigger Link.
NOTE
Front panel TRIG key (see MANUAL) is
active with the Trigger Link selected.
Pressing the TRIG key passes operation
into the scan layer.
To select the Trigger Link from the SELECT ARM
SOURCE menu, place the cursor on TRIGLINK and press
ENTER. The following menu is displayed:
SELECT INPUT LINE
#1 #2 #3 #4 #5 #6
The position of the cursor indicates the presently selected in-
put line.
To select a trigger input line for the Model 2001, place the
cursor on the desired line number and press ENTER. The fol-
lowing message is displayed:
SELECT OUTPUT LINE
#1 #2 #3 #4 #5 #6
The position of the cursor indicates the presently selected
output line.
To select a trigger output line for the Model 2001, place the
cursor on a different line number and press ENTER. The in-
strument returns to the SELECT ARM SOURCE menu.
Note that you cannot use the same trigger line for both input
and output.
HOLD: When HOLD is selected, the arm source is sup-
pressed. As a result, operation does not pass into the scan lay-
er until HOLD is cancelled by selecting one of the other arm
source selections. Select HOLD from the SELECT ARM
SOURCE menu by placing the cursor on HOLD and press-
ing ENTER. The instrument returns to the SETUP arm layer
menu.
COUNT
This menu item defines the number of times operation re-
turns to the arm layer. With the SETUP arm layer menu dis-
played, select this menu item by placing the cursor on
COUNT and pressing ENTER. The following menu is dis-
played:
ARM COUNT
INFINITE ENTER-ARM-COUNT
INFINITE: Use this selection to continuously return opera-
tion to the arm layer. Select continuous arming from the
ARM COUNT menu by placing the cursor on INFINITE and
pressing ENTER. The display returns to the SETUP arm lay-
er menu.
ENTER-ARM-COUNT: With this selection, the user deter-
mines the number of times operation returns to the arm layer.
You can program the Model 2001 to arm up to 99999 times.
Perform the following steps to enter the arm count:
1. With the ARM COUNT menu displayed, place the cur-
sor on ENTER-ARM-COUNT and press ENTER. A
message indicating the present arm count is displayed:
ARM COUNT = 00001
The above arm count indicates that the instrument will
arm 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 arm layer menu.
CONTROL
Use this menu item to enable or disable the source bypass.
The source bypass is used to bypass the arm event on the first
pass through the arm layer. With the SETUP arm layer menu
displayed, select this menu item by placing the cursor on
CONTROL and pressing ENTER. The following menu is
displayed:
TRIGGER CONTROL
SOURCE ACCEPTOR
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