Keithley 7001, Инструкция по эксплуатации

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Front Panel Operation
4-36
ample, be used to trigger a DMM to take a reading. Ex-
ternal triggering is covered in detail in paragraph 4.10.
Select external triggering from the SELECT CHAN
SPACING menu by placing the cursor on EXTERNAL
and pressing ENTER. The instrument will return to the
CHANNEL CONTROL menu.
Note: The front panel STEP key (see MANUAL) is ac-
tive with external triggering selected. Each press of the
STEP key will select the next channel of the scan.
GPIB

With this selection, bus triggers are used to con-
trol channel spacing for the scan. Each trigger sent over
the bus (GET or *TRG) will open the current channel
and close the next channel of the scan. See Section 5 for
detailed information on bus triggers.
Select bus triggering from the SELECT CHAN SPAC-
ING menu by placing the cursor on GPIB and pressing
ENTER. The instrument will return to the CHANNEL
CONTROL menu.
Note: The front panel STEP key (see MANUAL) is ac-
tive with bus triggering selected. Each press of the
STEP key will select the next channel of the scan.
Manual

With this selection, the front panel STEP key
is used to control channel spacing. Each time the STEP
key is pressed, the current channel of the scan will
open and the next channel will close.
Select manual triggering from the CHANNEL SPAC-
ING menu by placing the cursor on MANUAL and
pressing ENTER. The instrument will return to the
CHANNEL CONTROL menu.
Note: The front panel STEP key is active when TIMER,
EXTERNAL, GPIB or TRIGGER LINK is selected.
Triglink

With this selection, channel spacing of the
scan is controlled by the Trigger Link of the Model
7001. Trigger Link is an enhanced trigger system that
uses up to six lines to direct trigger pulses to and from
other instruments. Each trigger stimulus applied to the
Model 7001 will open the current channel and close the
next channel of the scan. See paragraph 4.11 for details
on using the Trigger Link.
Note: The front panel STEP key (see MANUAL) is ac-
tive with Trigger Link selected. Each press of the STEP
key will select the next channel of the scan.
Select the Trigger Link from the SELECT CHAN SPAC-
ING menu by placing the cursor on TRIGLINK and
pressing ENTER. The following menu will be dis-
played:
SET TRIGGERLINK MODE
ASYNCHRONOUS SEMI-SYNCHRONOUS
ASYNCHRONOUS

The asynchronous trigger link
mode is used for trigger configurations that require in-
put and output triggers to be routed on separate lines.
Perform the following steps to select the asynchronous
mode, and to select the input and output trigger lines
for the Model 7001:
1. With the SET TRIGGERLINK MODE menu dis-
played, place the cursor on ASYNCHRONOUS
and press ENTER. The following message will be
displayed:
SELECT INPUT LINE
#1 #2 #3 #4 #5 #6
The position of the cursor indicates the currently
selected input line.
2. To select a trigger input line for the Model 7001,
place the cursor on the desired line number and
press ENTER. The following message will be dis-
played:
SELECT OUTPUT LINE
#1 #2 #3 #4 #5 #6
The position of the cursor indicates the currently
selected output line.
3. To select a trigger output line for the Model 7001,
place the cursor on a different line number and
press ENTER. The instrument will return to the
SET TRIGGERLINK MODE menu. Note that you
cannot use the same trigger line for both input and
output.
SEMI-SYNCHRONOUS

In this mode, the input and out-
put triggers for the Model 7001 are assigned to the
same line. Perform the following steps to select the
semi-synchronous mode, and to select the trigger line:
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