Programming; Introduction - Tektronix DC 5010 Anleitung

Operating Instructions-DC 501 0
These armed measurements can then be averaged much
like time interval averaging. The counter determines the
number of digits to display (best possible resolution) based
on the number of Channel A events averaged. Typically,
each total measurement of Frequency, Period, and Ratio
contains a 1 count error and the counter displays the num-
ber of digits that can be justified given this error. When
using arming in the Frequency Period, or Ratio modes (non-
time interval modes), each act of arming and disarming can
introduce 1 count errors. The counter does not take this into
account, however, and displays the number of digits based
only on the total number of events per overall measurement,
independent of the number of times the instrument was
armed and disarmed.
The actual resolution for a period measurement using
arming will be less than that displayed. It can be found using
-
the following relationship:
Tc
m
P
Resolution
=
- -
N
TB
Tc
=
clock period
Tp
=
input period (CH A)
T ,
=
time from starting A event to stopping A
N
=
number of averages, i.e., 1
o6
or 1 09, efc.
event
PROGRAMMING
Introduction
Instrument commands are presented in threle formats:
This section of the manual provides information for pro-
gramming the DC 501 0 by remote control via the IEEE-488
A front panel illustration-showing command relation-
General Purpose Interface Bus (GPIB). The following infor-
ships to front panel operation (see Fig. 2-10).
mation assumes the reader is knowledgeable in GPlB com-
Functional Command List-a list divided ihto function-
munication and has some exposure to programming al groups with brief descriptions.
controllers. Communication via the GPIB is specified and /--
described in the IEEE Standard 488-1 978, "Standard Digital
a
Detailed Command List-an alphabetical listing of
Interface for Programmable ~nstrumentation"' All GPlB
commands with complete descriptions.
references in this manual refer to the IEEE-488 GPIB.
TM 5000 instruments are designed to communicate with
TM 5000 programmable instruments connect to the
any GPIB-compatible controller that sends and receives
GplB through a TM 5000 power module. Refer to installa-
messages @Ommands)
Over
the GPIBm These ' O m-
tion and Removal earlier in this section for information on
mands program the instrument
Or
request information from
installing the instrument in the power module. Also, review
the instrument.
the Front Panel Operation portions of this section to be-
come familiar with front panel and internally selectable in-
strument functions. The GPIB primary address for this
Commands for TM ' O oO
programmable
are
instrument may be internally changed by qualified service
designed for among instrument The personnel. The DC 5010 is shippedewiith the address set to
same command is used in different instruments to control
decimal 20. The message terminator may also be internally
similar functions. In addition, commands are specified in
selected by qualified service personnel.
termina-
mnemonics related to the functions they implement. For ex-
tors are discussed in Messages and Communication Proto-
ample, the command INIT initializes instrument settings to
col (in this section). TM 5000 instruments are shipped with
their power-up states' For further ease
Of
programming,
this terminator set to EOI ONLY. Refer qualified service per-
'Ornmand
mnemonics match those
On
the front panel in
sonnel to the Maintenance section of this manual for loca-
most cases.
tions and setting information. Pressing the INST ID button
causes the instrument to display its selected GPIB primary
'
Published by the Institute of Electrical and Electronics Engi-
address; the far right decimal point lights if the selected
neers, Inc., 345 East 47th Street, New York, N.Y., 10017. message terminator is LFIEOI.