Model 40T26G40A
22
Rev A
Table 3-8. *STB?; Response Codes
(The command
*STB?;
causes the TWTA to send a string containing an operational state code consisting of 2
ASCII characters representing hex digits. The response is in the form
STATUS:
[x][y][eol]
where the hex
values of
[x]
and
[y]
are formed as shown below)
y bit
Meaning
0 (LSB)
Power status; always 1(power on)
1
Standby status; 0 if not in standby, 1 if in standby
2
Operate status; 0 if not in operate, 1 if in operate
3 (MSB)
Fault status; 0 if no fault, 1 if fault exists
x bit
Meaning
4 (LSB)
Mode switch; always 1 (reset)
5
Blank switch; always 1 (off)
6
Blank status; always 0 (off)
7 (MSB)
Not used; always 0
Table 3-9. Catalog of Heater Auto Off Time Delay Codes
Argument Meaning
0
0.5 hour heater auto off time delay
1
1.0 hour heater auto off time delay
2
1.5 hour heater auto off time delay
3
2.0 hour heater auto off time delay
4
2.5 hour heater auto off time delay
5
3.0 hour heater auto off time delay
Command syntax is in this form:
<command mnemonic> <parameter> <carriage return>
where:
<command mnemonic>
consists of one of any valid command found in Table 3-3;
<parameter>
(as applicable) consists of one ASCII space character followed by a number; and
<carriage return>
consists of an ASCII carriage return.
All commands are case-sensitive.
The system will return parameter values, fault codes, and status codes regardless of whether remote is
enabled. The parameter value is returned as a string of 20 characters or less, consisting of a label,
=
, and a
value. For example, outputting the command RDEF to the TWTA would result in the TWTA sending back
the string
Ef=6.03
(assuming the heater voltage is 6.03 volts). Units are usually not returned; see Table 3-3
for the units.
If remote is not enabled, set commands and commands to the system logic (i.e., OPERATE; or STANDBY;
or RESET;) will not be accepted.
It is recommended that the RDSTAT command be used to provide the host program with a report on how a
command was processed.
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