15
K R A M E R
E lectron ics
MATRIX ROUTING SWITCHER
4 GENERAL FEATURES
4.1 VIDEO SECTION
- Bandwidth @ -3dB: 350 MHz
-
Crosstalk @ 4,43 MHz:
-50 dB between two adjacent lines.
-55 dB between two extreme lines.
- Differential gain : 0,15% max.
- Differential phase : 0,1° max.
- Signal/Noise Ratio > 60 dB @ 4.43MHz
- Delay signal input/output matrix: 35 nS
- Chrominance/luminance delay < 10 nS
- Clamp on bottom of synchronization: -0,3V
- BNC connectors 75
Ω
- Switching Point Assignment down by PROM
programming
4.2 Analog AUDIO SECTION
- Bandwidth @ -6 dB: 20 KHz
-
Crosstalk @ 1 KHz:
-70 dB between two adjacent lines.
- Harmonic distortion < 0,05%
- Signal/Noise Ratio > 70 dB
-
Terminal blocks 3 points detachable:
skewer 1: shield, mass, earth
skewer 2: hot point or asymmetric signal
skewer 3: cold in balanced, or non connected
point in unbalanced
4.3 DIGITAL AUDIO AES/EBU
- Bandwidth @ -3dB: 50 MHz
- Jitter max: 20nS
- Numeric Rise Time gap: 30 nS
- Crosstalk @ 5,12 MHz: -60 dB
Standard AES 3
- Impedance: 110
Ω
balanced
- Min/Max Input Level: 1V/5Vp-p (110
Ω
loaded)
- Output Level: 5Vp-p (110
Ω
loaded)
- Connector type : detachable terminal blocks 3pts:
skewer 1: shield, mass, earth
skewer 2: signal
skewer 3: reversed signal
Standard AES 3-id
- Impedance: 75
Ω
unbalanced
- Input Level: 1Vp-p (75
Ω
loaded)
- Output Level: 1Vp-p (75
Ω
loaded)
- Connector type : BNC
4.4 COMMUNICATION SECTION
- Rate: 9600 Bauds, 8 bits, without parity, 1 start
bit, 1,5 stop bit
Sub-D9 RS232S
connector (measures in relation to
the mass 0V) :
- levels: max: +/-12V min: +/-4V
- tension of rest: - 10V
- tension work (start bit): +10V
- Start 1 bit time: 104 µS
Sub-D9 RS422S
connector (measures in relation to
the mass 0V) :
- level in rest Txd+ : +4,5V
- level in rest Txd- : 0,5V
- level in rest Rxd+ : +4,5V
- level in rest Txd- : 0,5V
4.5 MAINTENANCE
DISASSEMBLY OF THE COMMUNICATION,
VIDEO AND AUDIO CARDS.
Power off the matrix.
For the removal of the active cards and Power
Supplies, undo the tightening screws on the edge of
the panel and pull on the card, power off.
For removal of the Power Supply block, withdraw
the adjacent panel to facilitate access.
Then disconnect the power cord and exchange the
Power Supply block.
For the extraction of the communication / audio /
video connectors cards (see diagram of
implantation of the matrix in beginning of this
manual), it is necessary to withdraw all cables that
are fitted to the same block.
The cards must be returned to the factory for testing
purposes. A visual examination can be made by the
user for the audio and video connectors.
