Tektronix 2252, Руководство оператора

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Controls, Connectors, and Indicators
NOTE
if the HARDCOPY button is accidently pressed when the
printer is not ready, the message PRINTER NOT READY will
appear on the screen after the digitized period is completed.
To exit from the Hardcopy mode, press the M enu-Select
button opposite the message ABORT, CLEAR DISPLAY but­
ton, or one o f the Measurements select buttons. The user can
also exit from the hardcopy mode during the digitizing period
(when the A sweep speed or trigger rate is very slow) by press­
ing the M enu-Select button opposite the message ABORT.
£ 3 ) GP1B STATUS In dica tors-Ind icates the status of the GRIB.
LO CK—Indicates that the GPIB has locked out the front-panel controls
of the instrument. This condition can be cleared oniy over the bus or by
cycling the instrument POWER switch. The lockout condition is used
when the controller wishes the present state of the instrument front
panel to be protected when communicating with the instrument.
SRQ — Indicates the instrument is requesting service from the control­
ler. It will also be turned on if an error or a warning condition has been
detected. It wiii be turned off when the controller has polled the instal­
ment for its status and no other conditions are pending.
AD DR—Turns on when the GPiB is in one of the addressed states,
TACS, (Talker-Active State) or LACS (Listener-ACiive State).
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2252 Operators