Summary of Contents for Sierra Digital Mixer
- Page 1 SIERRA VIDEO SYSTEMS, INC. Digital Mixer User’s Guide 507144-00 V 1.7 Digital Mixer User’s Guide...
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Page 2: Peripheral Connections
Introduction The DigiLinx Digital Mixer performs dissolve functions between two 270 Mbps component serial digital video signals. The output can also perform a 'fade to black' operation using either externally provided video source and internally generated 'black' signal. Dissolve rates are user programmable via an RS232/RS422 control port and transitions can be triggered via the same control port or one of nine General Purpose Input(GPI) pins which are activated by way of simple connections to ground. -
Page 3: Rear Panel Control
Set most sig. nibble of reference-to-output delay. Set 525(0) or 625(1) line default video std. for skew programming. Set analog(ANLG. REF. IN)(0) or digital(DIG. VID. IN A)(1) sync reference. Unused. Set EEPROM reg. in which to save parameters. Digital Mixer User’s Guide... -
Page 4: Internal Controls
S1-1,S1-2 - These switches control the transition time from one input to the other or from either input to or from ‘black’. The transition times resulting from each switch setting are: Table 3: GPI Transition Period Selection Transition Switch Period Settings ½ secondS1-1=1,S1-2=1 Digital Mixer User’s Guide... - Page 5 2 to pin 3, the connection is compatible with RS422. This mode allows connection to a user supplied controller hundreds of feet away, but requires the presence of a RS422 compatible serial port in the user’s controller. Digital Mixer User’s Guide...
- Page 6 Each mixer can handle about 65 bytes worth of command data, where the command character (e.g. “G” or “T”) counts as Digital Mixer User’s Guide...
- Page 7 -> respond with **Gaa,y!! where y =0(locked) or 1 (enabled) is current GPI status. Sends software version number response: Qaa,Vx.x (C) 1993 Sierra Video Systems, Grass Valley, CA!! where x.x is software version number, e.g. V1.1 Respond with **Saa,x,y,rr!! giving current mixer status (as it will be at completion of ongoing mix, if one is active).
- Page 8 Each digital video inputs is automatically aligned to the nearest horizontal sync signal generated within the Digital Mixer. This means digital sources don’t have to be aligned with ‘pixel precision’ as they enter the module. However, the sources MUST be within a horizontal line period of each other. The sources must also arrive with timing which is ‘advanced’(earlier in time) from the video output of the module by...
- Page 9 000D80 (3) ‘625’ lines 5,184 001440 (4) ‘625’ lines 6,912 001B00 (5) ‘625’ lines 8,640 0021C0 (6) ‘625’ lines 10,368 002880 (7) ‘625’ lines 12,096 002F40 (8) ‘625’ lines 13,824 003600 (9) ‘625’ lines 15,552 003CC0 Digital Mixer User’s Guide...
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Page 10: Parameter Storage
1.5 microseconds to 1 horizontal line period plus 1.5 microseconds Power Consumption 5V, <1.5A 8V, <0.8A -8V, <0.15A Operating Temperature Range 0 to 50 C, non-condensing Operating Humidity Range 0 to 95% RH, non-condensing All specifications subject to change without notice. Digital Mixer User’s Guide...
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