Belden Grass Valley XVP-3901-DPI, Руководство по установке и эксплуатации, Страница: 13 / 87

GUIDE TO INSTALLATION AND OPERATION
XVP-3901-DPI | 7
2.5.3 Details of rear panel connections
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.
AES IN / OUT – Discrete AES3 digital audio inputs and outputs (4/4)
The AES inputs and outputs connect via a 26-pin
D-SUB connector. The two available rears
present different impedances, as indicated in the
rear designation.
XVP-3901-110-3DRP-R-F
110
Ω
rear
Pin #
XVP-3901-75-3DRP-R
75
Ω
rear
AES IN 1 (Hi)
1
AES IN 1
AES IN 1 (Lo)
10
GND
AES IN 2 (Hi) 2 AES IN 2
AES IN 2 (Lo)
11
GND
AES IN 3 (Hi)
3
AES IN 3
AES IN 3 (Lo)
12
GND
AES IN 4 (Hi) 4 AES IN 4
AES IN 4 (Lo)
13
GND
AES OUT 1 (Hi)
5
AES OUT 1
AES OUT 1 (Lo)
14
GND
AES OUT 2 (Hi) 6 AES OUT 2
AES OUT 2 (Lo)
15
GND
AES OUT 3 (Hi)
7
AES OUT 3
AES OUT 3 (Lo)
16
GND
AES OUT 4 (Hi) 8 AES OUT 4
AES OUT 4 (Lo)
17
GND
GND
19, 20,
21, 22,
23, 24,
25, 26
GND
N/C
9, 18
N/C