Set-up to ON
FNC [SGC :CNØ SET GAIN 50 SET] VLON CR [LF]
If this command is received when the amplifier is in Standby, the High Voltage will be switched ON.
If this command is received when the amplifier is still in Heater Time Delay, High Voltage will be
switched ON at the end of the delay period.
If this command is received when the heater is OFF, the heater will be switched ON and the amplifier
will switch to High Voltage ON at the end of the Heater Time Delay period.
Reset Statement
Status Statement
RST [SGC :CHØ] CR [LF]
Upon receipt of this command, the High Voltage is switched OFF. If it is ON the heater is switched
OFF and any faults reset.
STA [SGC] CR [LF]
Upon receipt of this command, the TMA prepares a current status response. This command must
be issued before addressing the TMA as a Talker.
Status Message when addressed as a Talker:
Command Accepted:
[Space] CR LF
Fault:
FØ7TWTA:(fault message)
Fault Messages
CR
LF
Priority
1
2
3
4
5
6
7
8
SYNTAX ERROR
THRM OVERLOAD
HELX OVERCURRENT
INTERLOCK FAULT
DUTY CYCLE TRIP
PRF TRIP
GRID FAULT
SUMMARY FAULT
Heater Time Delay:
FØ6TWTA:AMP TIMING
CR
LF
Mechanical & Environmental
Same as 6900K4 Series
Special 488 Functions
Device Clear/Selected
Device Clear:
Causes all relays to de-energize and then assume initial pattern. Additionally, Device Clear
and Selected Device Clear output a clear pulse on the Clear lines, initialize the program flags and
pointers and clear memory.
IFC:
IFC clears all Bus Interface functions and, if CLEAR switch on rear panel is on, will cause all relays
to de-energize and then assume PROM programmed initial pattern and generate a clear pulse on
the Clear lines.
SRQ (CSL mode only):
Generates a Service Request
Interrupt (SRQ) when external data is received if not addressed as a talker. SRQs can be
completely inhibited by depressing the front panel SRQ INHIBIT switch. The SRQ signal is reset
when the TWTA is addressed to talk or when Serial Polled.
Serial Poll Response:
The TMA responds to a serial poll by placing an 8-bit character on the Bus data lines. The bit
assignments are:
DI0 1
DI0 2
DI0 3
DI0 4
DI0 5
DI0 6
DI0 7
DI0 8
Heater Time Delay
Standby
HV ON
Zero
Command not executed, syntax error causes RSV bit (DI0 7) to be set.
Summary Fault
RSV
Zero
