Specifications

Channel Master Operation Manual
P/N 95B-6001-00 (January 2005) page 47
If the entered command is valid, the Channel Master executes the com-
mand. If the command is one that does not provide output data, the Chan-
nel Master sends a carriage return line feed <CR> <LF> and displays a new
“>” prompt. Continuing the example,
>WP00001<CR> [Your original input]
> [Channel Master response to a valid, no-output command]
If you enter a valid command that produces output data, the Channel Master
executes the command, displays the output data, and then redisplays the “>”
prompt. Some examples of commands that produce output data are ? (help
menus), CS (start pinging), PS (system configuration data), and PA (run built-
in tests).
If the command is not valid, the Channel Master responds with an error
message similar to the following.
>WPA<CR> [Your input]
>WPA ERR 002: NUMBER EXPECTED<CR><LF> [Channel Master response]
>
After correctly entering all the commands for your application, you would
send the CS-command to begin the data collection cycle.
10.1.2 Data Output Processing
After the Channel Master completes a data collection cycle, it sends a block
of data called a data ensemble. A data ensemble consists of the data col-
lected and averaged during the ensemble interval (see “TE – Time Per En-
semble,” page 70). A data ensemble can contain header, leader, velocity,
correlation magnitude, echo intensity, percent good, and status data.
Channel Master output data can be in either hexadecimal-ASCII (Hex-
ASCII) or binary format (set by “CF – Flow Control,” page 51). The Hex-
ASCII mode is useful when you use a terminal to communicate with, and
view data from the Channel Master. The binary mode is useful for high-
speed communication with a computer program. You would not use the bi-
nary mode to view data on a terminal because the terminal could interpret
some binary data as control codes.
NOTE. All of RD Instruments’ software supports binary PD0 Output Data
Format only.
When data collection begins, the Channel Master uses the settings last en-
tered (user settings) or the factory-default settings. The same settings are
used for the entire deployment.
The Channel Master automatically stores the last set of commands used in
RAM. The Channel Master will continue to be configured from RAM until
it receives a CR-command or until the RAM loses its backup power. If the
Channel Master receives a CR0 it will load into RAM the command set you