LeCroy 9400A Manual page 116

RQS: GPIB RQS bit, indicating if a service request is pending.
MESSAGE READY: set to indicate that a message is ready for
transmission to the remote controller.
STB 2:
This status byte is unused and has no significance. However, it exists
and has an associated mask. The commands STB, MASK and TSTB act on all
6 status bytes or masks, including STB 2.
SOFTKEY PRESSED Status Byte (STB 3):
This status byte contains the coded value of the most recently pressed
soft key. Whenever the MASK 3 is non-zero, and the code in STB 3 is set
to a non-zero value, the SOFTKEY PRESSED bit (DIO-3) in STB I is set.
Codes:
O: No soft key pressed.
i - 9: One of soft keys I - 9 pressed (in REMOTE)
I0: CALL TO HOST soft key pressed (in LOCAL)
INTERNAL STATE Status Byte (STB 4):
This status byte contains status bits, reflecting the internal state of
the 9400A. Since the internal states cannot be directly controlled,
reading this byte does NOT reset it. Whenever a bit of this status byte
gets set, and the corresponding bit in MASK 4 is also set, the INTERNAL
STATE bit (DIO-4) in STB 1 is set.
Bits:
O:
1:
2:
3:
TRIGGERED: cleared when the 9400A is armed, i.e.
acquiring data, and set when the 9400A is triggered,
i.e. not acquiring data.
0VERLOADI: set when channel 1 is in overload, reset
otherwise.
OVERLOAD2: set when channel 2 is in overload, reset
otherwise.
FIRST SEQNCE sweep triggered
Note:
Overloads are cleared by removing the overloading signal from the input
and by returning the input coupling to 50 Q. Overloads never occur with
1Mg coupling.
OPERATION COMPLETE Status Byte (STB 5):
This status byte contains status bits reflecting the identity of the
operation which has been completed. Whenever a bit of this status byte
gets set, and the corresponding bit in MASK5 is also set, the OPERATION
COMPLETE bit (DIO-5) in STBI is set.
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Remote Operations
t