AR 10012342, Operating And Service Manual

Page: 37 / 72

Model 500T8G18
Rev B
23
3.8 REMOTE IEEE-488 OPERATION
The TWTA is provided with a communication interface that conforms electrically to the IEEE-488 standard.
It permits remote emulation of OPERATE, STANDBY, and RESET push-buttons as well as access to
parameter measurements, system faults, gain adjustment, and control unit status. The following tables
summarize the commands and the return codes.
Table 3-5. Catalog of IEEE-488 Commands
Command Function Units Response format
RDSTAT Returns status code of processing of previous command (see
Table 3-6) STATUS=[ ]
RDFLT Returns system fault code (see Table 3-7) flt=[ ]
OPERATE; Emulates OPERATE push-button
STANDBY; Emulate STANDBY push-button
POWER:OFF; Emulate STANDBY push-button
RESET; Emulates RESET softkey
RDS/N Returns serial number s/n=[ ]
RDCONHR Returns console hours ConHr=[ ]
RDRFHR Returns RF hours RfHr=[ ]
RDEK Returns cathode voltage KV Ek=[ ]
RDEB Returns collector voltage KV Eb=[ ]
RDEF Returns heater voltage V Ef=[ ]
RDIF Returns heater current A If=[ ]
RDIW Returns helix current mA Iw=[ ]
RDTMPTWTF Returns TWT temp (°F) °F TWTF=[ ]F
RDTMPTWTC Returns TWT temp (°C) °C TWTC=[ ]C
RDTMPPSF Returns power supply temp (°F) °F PSF=[ ]F
RDTMPPSC Returns power supply temp (°C) °C PSC=[ ]C
RDTWTOTF Returns TWT overtemp warning setpoint (°F) °F TWTOTF=[ ]F
STWTOTF Sets TWT overtemp warning setpoint (°F) °F
RDTWTOTC Returns TWT overtemp warning setpoint (°C) °C TWTOTC=[ ]C
STWTOTC Sets TWT overtemp warning setpoint (°C) °C
RDPSOTF Returns power supply overtemp warning setpoint (°F) °F PSOTF=[ ]F
SPSOTF Sets p. s. overtemp warning setpoint (°F) °F
RDPSOTC Returns p. s. overtemp warning setpoint (°C) °C PSOTC=[ ]C
SPSOTC Sets p. s. overtemp warning setpoint (°C) °C
RDIWOC Returns helix overcurrent warning setpoint mA IwOC=[ ]
SIWOC Sets helix overcurrent warning setpoint mA
RDLOGIC Returns logic state code (see Table 3-8) Sys=[ ]
RDA Returns gain % A=[ ]
SA Sets gain %
RDHTDREM Returns remaining heater time delay sec. HTD=[ ]s
RDPOD Returns forward power out (dBm) dBm Po=[ ]dBm
RDPOW Returns forward power out (W) watts Po=[ ]W
RDPRD Returns reflected power out (dBm) dBm Pr=[ ]dBm