View Harman Kardon SIGNATURE 2.0 (serv.man11) User Guide / Operation Manual online
232 control to the most current version. Verify the version of software in your unit by viewing the
VFD (Vacuum Fluorescent Display) on the front panel immediately after you apply power to the
Signature 2.0 (main power, not standby).
equipment. It was developed in response to a need for a low-cost, simple, fault-tolerant
communications protocol. It is based on the EIA RS-232 electrical specification. Data is
communicated at 9600 baud, 8 data bits, 1 stop bit and no parity.
may commence. If the bus is being used, wait for a period of inactivity. Check each byte of a
transmission against the intended message to ensure that data corruption does not occur due to
multiple devices attempting to use the bus at the same time. For each message received, the
receiver will generate an acknowledgment. The device which sent the message should receive this
acknowledgment before beginning its next data transmission. Under rare circumstances, the
receiver may be performing a function which cannot be interrupted. The message should be
retransmitted until an acknowledgment is received. Due to this fact, delays are required between
incoming messages for the transmission of the required acknowledgment.
panel button command. This command can be used to update external displays in real time or to
generate a polling request for status.
but it will have a different Target Device Type and Command Modifier. Example: the IR “Vid 1”
button on the remote will generate a “Vid 1” button command on the Signature bus. See page ??
of this document for a list of the Remote Button codes.
a volume adjustment is made, the 2.0 will wait for a period of encoder inactivity and then transmit
an unsolicited “Power/Volume Status” response. See page ??.