GUIDE TO INSTALLATION AND OPERATION
XVP-1801 |
7
REF IN – Studio reference input
For external synchronization, connect a black studio reference signal to the BNC labeled
REF IN
.
The reference input must conform to SMPTE 170M/SMPTE 318M/ITU 624-4/BUT 470-6 for standard
definition signals and SMPTE 274M / SMPTE 296M for high definition signals and is used to phase the
HD/SD SDI outputs to the studio. A reference mismatch may occur if there is a difference between the input
video format’s frame rate and the reference format’s frame rate. When a mismatch occurs, the output will
freeze to the reference frame rate and produce an input error and the card-edge Status LED will turn red to
indicate the mismatch.
Note that in the case of HD signals of the same frame rate, any reference signal may be used to genlock any
output signal, regardless of scan type (progressive or interlaced). When a 720p/tri-level sync reference signal
is used with an interlaced output, the output is synchronized but there may be a delay of one field depending
on when the synchronization started.
The loop must be terminated if not used.
HD/SD SDI IN – serial digital HD/SD input
Connect up to two serial digital video signal, conforming to the SMPTE 292M standard for HD input signals
and SMPTE 259M standard for SD input signals, to the BNC labeled
HD/SD SDI IN
. The XVP-1801 will
automatically switch to the detected line format.
HD/SD SDI OUT – serial digital video outputs
The XVP-1801 provides two HD/SD SDI video outputs on BNC connectors, labeled
HD/SD SDI OUT 1
and
2
. The SDI video signal conforms to the SMPTE 292M and SMPTE 259M-C standard.
GPI – GPI I/O connector
The rear panel GPI connector on a 15-pin D-SUB provides 8 GPI: 2 for input selection, 4 to recall user
configurable presets and 2 GPIs to indicate which input is selected.
GPI Label
Pin #
GPI USER1
1
GPI USER2
6
GPI USER3
2
GPI USER4
7
GPI INPUT 1
3
GPI INPUT 2
8
GPI OUT1 (IN1 selected)
13
GPI OUT2 (IN2 selected)
10
N/C
4, 9
GND
5, 11, 12, 14, 15
The User Preset and Input selections are all contact closures to ground (GND). To select a preset (User 1 to
4) or an input (Input 1 or 2) using the GPI, simply short the preset or input pin to any GND pin.
•
The card detects the transition to ground
•
user presets must be configured and saved through the normal operating mode of the XVP-1801.