Appendix B: Remote Control
B–4
DS1000 Series User Manual
addresses, refer to page B–5. The addresses perform the following
functions:
Device address (Ad) is set to 0F hex in all television demodulators.
The PC uses the device address to initiate communication with a
television demodulator.
Remote address (Ar) is unique for each television demodulator.
You set this unique address as a decimal number. To set the
address, use the SERIAL SET–UP item in the configuration menu.
The remote address is the base address used to determine the Ars
and Arr addresses.
Send remote address (Ars) is used to send data to the television
demodulator. Calculate Ars using the following equation:
Ars = Ar x 2
Receive remote address (Arr) is used to receive data from the
television demodulator. Calculate Arr using the following
equation:
Arr = Ar x 2 + 1
For example, if you set the remote address (Ar) to 50 decimal
(32 hex), its SCL protocol addresses are as follows:
Ad (from Table B–2) = 0F hex
Ars = (32 hex) x 2 = 64 hex
Arr = (32 hex) x 2 + 1 = 65 hex
Remote Operation Flag
Some commands can be used only when the television demodulator is
in the remote controlled state. When in remote control state, you
cannot control the television demodulator from the front panel. The
front panel display indicates the remote control state with the message
“REMOTE CONTROLLED”
Two commands control the state of the remote flag. Use the command
PWD= to enter the remote control state and set the remote flag to
true (1). Use the DISC= command to resume front panel control and
set the remote flag to false (0). Use the LOG? query to get the current
state of the remote flag.
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