Comdisco Systems Spw - Townshend Computer Tools DAT-Link User Manual

102

11.1.2 Comdisco Systems SPW

Reading and Writing SPW Files
The program can read SPW version 3.0 les that are stored in either oating
naplay
point or xed-point formats with up to 16 bits/sample by using the
Both scalar and complex (stereo) signals are supported.
During record,
narecord
or option is speci ed. Stereo recordings will be saved as SPW complex les.
-fSPW3
Values in the le header will be lled in with appropriate values.
Using the from SigCalc
DAT-Link
Comdisco's Signal Display Editor (SigCalc) provides graphical waveform display
and editing using the X Window System. This optional software is installed only
if the Comdisco support option was selected during the software installation. In
addition, you will need to perform some additional steps to inform SPW of the
existence of the new user functions.
DAT-Link
The executables for SPW support are stored in the subdirectory of the
lib/dl/spw3.0
install directory,
Comdisco user program directory,
to root or the SPW maintainer. For example, if you installed the executables in
/usr/local
, use:
su
Password: xxxxx
rm -rf /spwdata/sdeprog/datlink
ln -s /usr/local/lib/dl/spw3.0 /spwdata/sdeprog/datlink
exit
You must then start
mfileman
SigCalc Method
Select

will then present, and type
The completed dialog should appear as shown in Figure 11.4. This will inform SPW
of the existence of the new user functions.
DAT-Link
Once the software is installed, you can start
Link functions from the
menu options will then be available for playback, recording, and control of the
Link
. A screen dump of the playback dialog for SigCalc is shown in Figure 11.5.
The various settings for record and playback can be easily speci ed using these
transport
dialog boxes. Also, a
will store the les as 16 bit xed-point les if the
. You must create a link to these from the normal
/spwdata/sdeprog
and select
Create...
from the options at the top of the dialog that
as the library name in the box labelled
datlink
Tools->User Programs->Execute...
menu can be used to control the DAT machine via
Third Party Support
option.
-fSPW
-fSPW2
. To do this you will to
from the menu.
Libraries
mfileman
Library
and access the DAT-
SigCalc
menu. Additional
DAT-
su
.