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Chapter 8, Signaling Decoder Screen
MPT 1327 Decoder
•In the slot timing mode it is not possible to determine whether the message was
returned in the "correct" timeslot. (For example, if it is a response that should re-
turn in the timeslot immediately following the requesting forward message.) It is
possible to check that the timing offset from the forward channel slot boundaries
is within specification.
•This mode is selected with the following HP-IB with the command:
•DECoder:MPT1327:TIME:MODE 'SLOT
• works in the Control and Traffic test modes, it is disabled in all other modes.
•In Control mode the timing counter is reset at the end of each message transmitted
from the control channel message buffer. It is not affected by the on-going trans-
mission of the control channel filler pattern.
•In the Traffic mode the timing counter is reset at the end of each message trans-
mitted from the traffic channel message buffer. There is no background filler pat-
tern.
•In the response timing mode both next slot and slot offset timing can be checked.
The received message must however, be solicited by a forward message so that
the timer is reset and the measurement is meaningful.
•This mode is selected via the HP-IB with the command:
•DECoder:MPT1327:TIME:MODE 'RESPONSE'
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