EasyManuals Logo

Keithley 6221 User Manual

Keithley 6221
454 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #280 background imageLoading...
Page #280 background image
10-16 Remote Operations Model 6220/6221 Reference Manual
Return to Section 10 topics
In each of the above program messages, the path pointer starts at the root com-
mand (
:stat) and moves down the command levels until the command is exe-
cuted.
Multiple command messages
You can send multiple command messages in the same program message as
long as they are separated by semicolons (;). The following is an example showing
two commands in one program message:
:stat:oper; :stat:oper:enab <NRf>
When the above is sent, the first command word is recognized as the root com-
mand (:stat). When the next colon is detected, the path pointer moves down to the
next command level and executes the command. When the path pointer sees the
colon after the semicolon (;), it resets back to the root level and starts over.
Commands that are on the same command level can be executed without retyping
the entire command path. Example:
:stat:oper:enab <NRf>; enab?
After the first command (:enab) is executed, the path pointer is at the third com-
mand level in the structure. Since
:enab? is also on the third level, it can be
entered without repeating the entire path name. Notice that the leading colon for
:enab? is not included in the program message. If a colon were included, the path
pointer would reset to the root level and expect a root command. Since
:enab? is
not a root command, an error would occur.
Command path rules
Each new program message must begin with the root command, unless it is
optional. If the root is optional, treat a command word on the next level as
the root.
The colon (:) at the beginning of a program message is optional and need
not be used.
:stat:pres = stat:pres
When the path pointer detects a colon (:), it moves down to the next com-
mand level. An exception is when the path pointer detects a semicolon (;),
which is used to separate commands within the program message.
When the path pointer detects a colon (:) that immediately follows a semi-
colon (;), it resets to the root level.
The path pointer can only move down. It cannot be moved up a level. Exe-
cuting a command at a higher level requires that you start over at the root
command.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Keithley 6221 and is the answer not in the manual?

Keithley 6221 Specifications

General IconGeneral
InterfaceGPIB, RS-232
Communication InterfaceGPIB, RS-232
Current Sourcing Accuracy±(0.03% of output + 20 pA)
Current Sinking Accuracy±(0.03% of output + 20 pA)
Output Resolution100 fA
Output Accuracy±(0.03% of output + 20 pA)
Power Requirements100 V to 240 V AC, 50/60 Hz

Related product manuals