Siemens 2000592-001 Benutzerhandbuch

Continued

 

This command may be used to override default values for several 
parameters related to the DataNET protocol. Specific forms of the 
command are: 

hdlc setuptime 

Displays the current “setup time” value, in 
microseconds. This is the time that the 
ANCB/DN board will transmit a “preamble” 
pattern on a DataNET link before starting 
the actual data frame. The preamble 
allows time for the receiver circuitry at the 
far end of the link to adjust to the incoming 
signal’s amplitude, phase, and frequency. 
The default setup time is 2500 
microseconds. 

hdlc setuptime time 

Sets the DataNET setup time to the value 
given, in microseconds. The new setup 
time value is saved in non-volatile 
memory. 

 

Displays the transmit “window” size used 
by DataNET. This is the number of I-
frames (Information frame) that a station 
may send before it must receive a low-
level acknowledgment from the receiving 
station. 

 

Sets the transmit window used by ports 1 
and 2 on the ANCB. The parameter “num” 
must be a number 1 through 7. The 
default window size is 7. 

 

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