7
KRAMER ELECTRONICS LTD.
5
SDI SWITCHER AND MATRICES
This section describes all the controls and connections of your switcher/matrix. Understanding all of the
controls and connections helps you realize the full power of your machine.
5.1
Getting to Know Your SD-7308 Switcher
The Kramer
SD-7308
is a multi-standard, adjustment-free 8x1 switcher for SDI (serial digital) video signals. It
accepts up to eight SDI inputs, provides necessary buffering and reclocking, and routes the selected source to
four identical SDI outputs using BNC connectors. It provides automatic equalization for losses typical with
long runs of 75-ohm co-axial cable. Depending on the cable and video standard, cable lengths of several
hundred meters is possible. Standard recognition is automatic and the machine switches during the vertical
interval according to the SMPTE RP-168 standard.
A rear-panel output level control is provided to optimize signal level. The input select function of the
SD-7308
can be controlled by front panel buttons and by RS-232 commands transmitted by a touch-screen control
system, personal computer, or other control system. When no signal exists on a selected input, the LED in the
appropriate button flashes. The
SD-7308
automatically recognizes the word length for both 10-bit and 8-bit
video.
Panel features of the
SD-7308
are described in Figure 3 and Table 1.
Note:
For operation instructions refer to section 7.2
.
Figure 3: SD-7308 Front/Rear Panel Features
Table 1: SD-7308 Front/Rear Panel Features
No. Feature
Function
1.
POWER
Power ON/Off switch, illuminates when toggled.
2.
INPUT SELECTOR
8 illuminated touch buttons select the desired input
3.
SDI INPUTS
8 BNCs connect up to 8 SDI sources to the switcher
4.
OUT LEVEL
Controls the output level of the SDI signals.
5.
SDI OUTPUTS
4 parallel SDI reclocked outputs
6.
PROGRAM
Dip switches for programming the switcher
7.
RS-232
RS-232 connection to a PC or to another control device
8.
POWER SOCKET
A socket with fuse for connecting the mains power cord