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Page 36
1
NTSC Ð UP. PAL Ð DOWN
2
Reserved
3
Test Mode. UP:INACTIVE, DOWN:ACTIVE. While in test mode, the unit
pulses 831 Hz tones out each audio output. The tones are ON for 1 second,
OFF for 1 second, É. Also, a gray scale is output for video.
4
LNB Power. UP: OFF, DOWN: ON. Not under software control.
3.6.5
Display / Push Buttons
This interface supports the following functions:
1. Status.
2. Control.
3. Front panel E-mail.
See Section
3.9
(Page 41) and
controls and LCD menus.
3.7
SERIAL PORTS
The UNITY4000 contains two serial ports. Any of four ÒdevicesÓ may be assigned to either
serial port, though higher-speed processes should prefer port 1 because it has more buffering.
Also, any device may only be assigned once, with the additional restriction that if either the
terminal or modem is assigned, the other cannot. Communication is fixed at 1 stop bit and 8 data
bits, and there is no handshaking. The serial portÕs behavior for each of its device types is shown
in the following table.
Device
Serial Port Behavior
Printer
Configured to B, P, 8, 1 (See note 1). All input data is ignored.
Aux Data
Configured to B, P, 8, 1 (See note 2). All input data is ignored.
Terminal
Configured to 19200, N, 8, 1. The unit responds to the terminal/modem commands as
described in Appendix A.
Modem
Configured to B, N, 8, 1 (See note 3). The unit responds to the terminal/modem
commands as described in Appendix A.
Note 1. For Printer: ÔBÕ may be 1200, 2400, 4800, 9600, or 19.2k baud; ÔPÕ may be ÔOÕ for Odd, ÔEÕ for
Even, or ÔNÕ for No parity.
Note 2. For Aux Data: ÔBÕ may be 1200, 2400, 4800, 9600, 19.2k, or 38.4k baud. ÔPÕ may be ÔOÕ for
Odd, ÔEÕ for Even, or ÔNÕ for No parity.
Note 3. For Modem: ÔBÕ may be 9600, or 19.2k baud; parity is always ÔNÕ for No parity.
UTY4000-011
APPENDIX B
(Page 56) for more information on the Front Panel
Table 17. Serial Device Settings
Page 36 of 75
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