Sierra Video 507144-00 - Manual (Page 3)

Digital Mixer User’s Guide 3
Table 1: Mixer Control Port Pin Assignments
Pin
Number Description
1
RS422 TX+ (outgoing data)
2 RS232 TX/RS422 TX-(outgoing data)
3 RS232 RX/RS422 RX-(incoming data)
4 RS422 RX+ (incoming data)
5 Ground
6 GPI1 (Cut to “A” limit, then dissolve to “B” VIDEO limit)
7 GPI2 (Cut to “B” limit, then dissolve to “A” VIDEO limit)
8 GPI3 (Cut to closest limit (“A” or “B”), then fade to BLACK on opposite limit)
9 NC
10 NC
11 NC
12 NC
13 NC
14 GPI4 (Cut to closest limit (“A” or “B”), then dissolve to opposite VIDEO limit)
15 GPI5 (Cut to “B” VIDEO limit)
16 GPI6 (Cut to “A” VIDEO limit)
17 GPI7 (Cut to BLACK on the farthest limit (“A” or “B”))
18 GPI8 (Cut to VIDEO on the farthest limit (“A” or “B”))
19 GPI9 (Cut to closest limit (“A” or “B”), fade to BLACK, then to opposite limit)
20 Ground
21 NC
22 NC
23 NC
24 NC
25 NC
Rear Panel Control
The reference to output skew values and other settings stored in the module can be entered and recalled
via the two switches on the rear of the mixer module. This section describes the utilization of these
switches.
SWA - Switch A is used to select the parameter to be adjusted by switch B. These are the parameters
and their corresponding switch positions:
Table 2: SWA Positions and Their Functions
Sw. Function
Pos. Selected
0
Set least significant nibble of reference-to-output delay.
1 Set 2nd least sig. nibble of reference-to-output delay.
2 Set 3rd least sig. nibble of reference-to-output delay.
3 Set 4th least sig. nibble of reference-to-output delay.
4 Set 5th least sig. nibble of reference-to-output delay.
5 Set most sig. nibble of reference-to-output delay.
6 Set 525(0) or 625(1) line default video std. for skew programming.
7 Set analog(ANLG. REF. IN)(0) or digital(DIG. VID. IN A)(1) sync reference.
8-D Unused.
E Set EEPROM reg. in which to save parameters.