User`s guide

Interpreting Screen Displays
4–4 MS-4900, Rev. A
TDD Screen
Fields
The time-division de-multiplexer screen reflects control channel information logged
by the TDD. This screen is meaningful with all data modes.
Figure 4-3. TDD Screen
Table 4-5. TDD Screen Fields
Field Should be: Meaning:
Cluster ID Assigned ID
(Allows control
commands to be issued
to a group of receivers
with this ID)
Status only; no action is needed.
A value of 65535 is the default setting that
means no cluster ID has been assigned
Carrier ID Assigned network ID
number
If the carrier ID received in the control channel
matches this ID, the receiver remains locked.
Control
channel
status
IdOkNow
Assigned ID and ID in
control packet match
Assigned carrier ID matches received ID.
Other displays could be:
TddUnlk: Not receiving a valid data stream
NoIdNow: Locked to TDM frames, not
receiving a control character
WrongId: Receiver is still locked, but is
reading a control channel carrier ID that does
not match the assigned ID; receiver will unlock
in less than 10 seconds.
Valid
control
packets
Incrementing during
download
Status only; no action is needed. (This
indicates the number of received control
channel packets addressed to this receiver.)
Cluster:00000 CID: 255
CTL CH: IdOkNow PKT:000
Cluster ID
Carrier ID
Control channel
status
Valid control
packets