Specifications
________________________________________________________________________________
TDBaud "n" Default: 96
Mode: TDM Host: TU
_________________________________ Parameters: __________________________________
"n" - Specifies the data rate in bauds of the TDM signal you are receiving.
_________________________________________________________________________________
The default value of n is 96. TDB can be set to 0-200, but only some of these
are legal values:
1-channel: 48, 72, 96
2-channel: 86, 96, 100
4-channel: 171, 192, 200
No error checking is done for values other than above. Bad values result in an
internal TDBAUD of 96.
________________________________________________________________________________
TDChan "n" Default: 0
Mode: TDM Host: TN
_________________________________ Parameters: __________________________________
"n" - Specifies the TDM channel number.
________________________________________________________________________________
"n" selects which data channel (default 0) to separate out from the multiplexed
TDM signal. n can be set to 0-3, but only some of these have unique effects:
1-channel: No effect.
2-channel: 0 and 2 show Channel A.
1 and 3 show Channel B.
4-channel: 0 shows Channel A.
1 shows Channel B.
2 shows Channel C.
3 shows Channel D.
_______________________________________________________________________________
TDm Immediate Command
Mode: TDM Host: TV
________________________________________________________________________________
TDM is an immediate command that places Radio Port 1 of the PK-900 in the TDM
receive mode. TDM stands for Time Division Multiplexing, also known as Moore
code and is the implementation of CCIR Recommendation 342.
Use the PK-900 SIGNAL command first to determine the bit rate and to make sure
that the signal is actually TDM. The SIGNAL command can detect one or two
channel TDM transmissions.
The TDM command forces bit phasing; do this when changing frequency to another
TDM signal. This is also useful when the PK-900 synchronizes on the wrong bit
in the character stream, which is likely on a signal which is idling.
TDM stations idle MOST of the time, so you may have to leave the PK-900
monitoring for an hour or two before any data is received.
1/93 A-96