Tektronix PFG 5105, Инструкция по эксплуатации

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ID?
Returns the identification of the instrument in the
form: ID TEK/ < model number > , < Tek Codes and
Format version > , < firmware version > , < installed
options > ;
INIT
Returns all settings to the power-on state, except
stored settings.
SET?
Returns all instrument settings that can be set and
queried except stored front panel settings.
TEST?
Executes internal checkout routines. Failure pro­
duces an error code in the response. A response
of
o
indicates that the test was successful; 1
indicates a failure. Response: TEST < num > ;
STATUS COMMANDS
RQS ON I OFF
Enables/disables service request operation. If RQS
is ON, errors are reported using SRQ at the end
of command execution; if OFF, errors are queued
until an error query is sent or until RQS is turned
back on.
RQS?
Returns the RQS status. Response: RQS ON;, or
RQS OFF;
USEReq ON I OFF
Enables/disables SRQ when the INST ID front panel
key is pressed.
USER?
Returns the status of the USER REQUEST setting.
Response: USER ON;, or USER OFF;
Control/Command Associations
Figure 3-1 shows the PFG 5105/5505 front panel key
and command relationships.
Detailed Command Descriptions
Each PFG 5105/5505 command, like those in all
TM 5000 instruments, begins with a header, which is
a word or acronym that describes the function im­
plemented. Following the header, many commands
require an argument, which is a word or number that
specifies the desired state for the function. The com­
mands are presented alphabetically on the following
pages. In this presentation, the following notations
Programming
are used to represent elements of the IEEE-488 bus
communications between the PFG 5105/5505 and the
controller.
< GET >
1
The Group Execute Trigger interface
message (decimal code 8 transmitted
with attention asserted). Only addressed
listeners respond to < GET >
1 .
< num >
1
A number that can be transmitted or
accepted by the PFG 5105/5505. Num­
bers may be NA 1 (integer) , NR2
(decimal), and NR3 (with exponent) for­
mats. (See ANSI Standard X3.42.)
(colon) Command argument link data. Data that
is linked to the previous argument uses
the colon (:) as the delimiter.
Example:
STOA 3: < binblk >
1
The buffer number 3 is linked to the
buffer data ( < binblk > 1).
< binblk >
1
A Binary Block of data in the format
specified in Tektronix Codes and For­
mats (V81.1 ). The binary block consists
of the percent sign (%, decimal 37)
followed by a two-byte binary count, the
data bytes, and then ends with a check­
sum byte. The two-byte binary count
(integer, most significant byte first) spe­
cifies the number of data bytes plus the
checksum byte. The checksum is the
two's complement of the modulo-256
sum of the preceding binary data bytes
and the binary count bytes, but does
not include the percent sign. The format
for the data points is 2 bytes per point -
high byte followed by low .byte.
NOTE
Because
a
binary block argument can have any
byte in it (including LF), the controller and
instrument must be in EOI ONLY mode.
[ and ]
A vertical line is used in a series of two
or more units, to separate the units; any
one unit must be selected and sent as
part of the command message. Do not
include the line in the message.
Square brackets enclose an optional
message part. Do not include the square
brackets in the message.
1 Carets are not part of the format; they are used in this manual to enclose an element for which the user must substitute the
appropriate characters.
PFG 5105/5505 Instruction Manual
3-5