Imagine Panacea Lite, Руководство по эксплуатации

Страница: 151 / 205

Chapter 4
P12×1-SP Installation, Configuration, and Operation
132
Copyright © 2004-2007, 2008, 2010, Harris Corporation
GVG TEN-XL
SMPTE Protocol
This module processes four GVG TEN-XL SMPTE controller commands: Switcher
Poll, Crosspoint Write, Status Read, and Quick Status Read. (See
Table 4-28 on
page 134 for command definitions.) The SMPTE interface mode is enabled by
setting
submodule DIP switches as shown in Figure 4-75 on page 137.

Switcher Poll
1

Crosspoint Write
1

Status Read
1
Table 4-26 GVG TEN-XL ASCII Command Definitions
Command Definition
[STX] - (0x02) Standard ASCII hex code for Start of
Transmission
[ENQ] - (0x05) Standard ASCII code for Enquiry
[VXPT] Video crosspoint coded as (0..9, A, B)
[corresponding ASCII hex codes (0x30,
..0x39, 0x41, 0x42)] 0 corresponds to
crosspoint 1
[AXPT] Audio crosspoint coded as (0..9, A, B)
[corresponding ASCII hex codes (0x30,
...0x39, 0x41, 0x42)] 0 corresponds to
crosspoint 1
[PS] Power Supply - fixed at 1 [corresponding
ASCII hex code 0x31]; meaning that power
supply one (the only one present) is active
[AH]* High order address - range of (0..9, A..F)
[corresponding ASCII hex codes (30..39,
41..46)]
[AL]* Low order address - range of (0..9, A..F)
[corresponding ASCII hex codes (30..39,
41..46)]
*
[AH] combined with [AL] gives an address range of 0..FF.
From controller [BREAK][AH][AL]
From switcher [Response]
From controller [BREAK][AH][AL][ESC][BC][CMD][DATA][CS]
From switcher [ACK]
1
All codes are adjacent to each other, and no spaces are allowed.
From controller [BREAK][AH][AL][ESC][BC][CMD][DATA][CS]
From switcher [ACK]