Dynamic File Format; Delay Type File Format - DBM ACE9600 Programmer's Manual

dBm

Dynamic File Format

The ACE distinguishes parameter file types by the first three letters in each file name.
File names can be up to 8 alphanumeric characters with the file extension of ".dat":
DLYxxxxx.dat - designates a delay file
FRQxxxxx.dat - designates a frequency offset file
ATNxxxxx.dat - designates an attenuation file
PHAxxxxx.dat - designates a phase offset file
RFFxxxxx.dat – designates an RF frequency file
WGNxxxx.dat – designates a noise density file
MPFxxxxx.dat – designates a multipath fading file
Parameter data files must be generated in ASCII format. The first line in the file is a
value that represents the number of sample points in the file. Delay and FreqOffset type
files also have an optional resolution value. See Delay Type File Format and
Frequency Offset Type File Format sections below for more information.
Each subsequent line will contain one data value, with lines separated by a carriage
return. Multipath files have a different format. See the Multipath Type File Format
section below for more information.
When the files are converted (optimized), the files have the same prefix, but the suffix
becomes ".ACE". The converted files are then transferred over the LAN interface, and
stored in flash memory. The converted files are in binary format (to optimize storage)
with an ASCII header (so that information can be displayed on the front panel).

Delay Type File Format

Delay type filenames must begin with "DLY" and end with ".DAT". The first line in the
file is a value that represents the number of sample points in the file. Delay type files
also have an optional resolution value in msec which is separated by an ASCII space
character from the number of sample points. If no resolution value exists in the data file,
the assumed resolution is 0.0000001 msec (100 psec).
Valid resolutions in msec are :

0.0000001 (100 psec)

0.00000001 (10 psec)

0.000000001 (1 psec)

0.0000000001 (0.1 psec)
The maximum delta Delay between samples is limited by the resolution value:
Resolution in msec
0.0000001 (100 psec)
0.00000001 (10 psec)
0.000000001 (1 psec)
ACE9600
Programmer's Manual
Advanced Channel Emulator
Maximum Delta
+/- 0.002000 msec
+/- 0.00032767 msec
+/- 0.000032767 msec
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