Testing The Infrared Remote Control - Townshend Computer Tools DAT-Link User Manual

42
As can be seen above, this test also provides some extra information about the
DAT-Link
. The second line above, shows the amount of free memory available in
DAT-Link
the for bu ering audio data. At 48,000 samples per second, stereo, 2
bytes per sample, the indicated memory would allow up to 5 seconds of bu ering.
See Sections 5 and 6 for information on how this bu ering is used.
The Peak transfer speed indicates the speed at which data is transferred between
DAT-Link
the computer and the
200 kbytes/second, so as long as the transfer speed is signi cantly greater than 400
kbytes/second , there should be no problem with the SCSI bus keeping up with
10
the data transfers.
The last three lines show a test of the
indicates the amount of fast static RAM available to the DSP along with the memory
addresses. In the example, the standard con guration of the
with 64 kbytes of memory beginning at address 0, and an additional 2 kbytes at
the top of the memory space. The original
address to
0x000000 0x001fff

2.7.2 Testing the Infrared Remote Control

DAT-Link
The includes a trainable, infrared remote control that can be used to
control any equipment that has a remote control of its own. The remote sensor
DAT-Link
on the front of the
the separate remote transmitter box can be positioned near the equipment to be
controlled allowing full computer control of the device.
The test program for the infrared remote system works by generating remote con-
trol sequences from the remote transmitter and monitoring them using the remote
sensor. The host computer can then verify that both the transmitter and sensor
are working properly.
To test the remote control subsystem:
1. Connect the remote control transmitter box by plugging it in to the remote
connector on the rear of the
2. Aim the transmitter so the clear LED (light-emitting diode) on the end of
the transmitter box is pointed toward the remote sensor on the front of the
DAT-Link
. The transmitter should be positioned approximately 20 cm ( 8
DAT-Link
inches ) from the
3. Run the program:
rctrain -l
Two transfers are required; from the
10
the hard disk
. The maximum audio data rate is approximately
DAT-Link
's DSP32C processor. This also
DAT-Link
, totalling 8 kbytes.
is used to train the remote control. Once trained,
DAT-Link
.
.
DAT-Link
to the computer and from the computer to
Installation
DAT-Link
+ is shown,
should show memory from