Triax TdSCR 504, TdSCR 508, TdSCR 512 User Manual
User Manual / Bedienungsanleitung
dSCR Multiswitch / Multischalter
TdSCR 504/508/512
Article Article no.
dSCR
Multiswitch
Multischalter
TdSCR 504
318182
TdSCR 508
318183
TdSCR 512
318184
Version A Date 10/2018 EN / DE
dSCR Multiswitch
TdSCR504/508/512
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EN
Product description
The product is designed to support a wide range of new and existing multiswitch installations.
Each unit has:
4 cascadeable LNB inputs from 1 universal Quattro LNB (VL HL VH HH) or 2 Wideband LNB (V H)
1 cascadeable terrestrial trunk input.
1 level adjuster for terrestrial signals
4, 8 or 12 SCR/Legacy outputs
• 1 DC input (for switch, line and LNB powering).
Each output can support a wide variety of satellite receivers :
• In legacy mode, the outputs can be used as a standard multiswitch.
• In SCR mode, each output supports up to 16UBs with all versions of the single cable technology. This includes OLT,
SCR, CSS, SKY UK, EN50494 and EN50607.
As all outputs are independent, the installation can be a mix of legacy and dSCR connections.
The terrestrial input supports any services that operate between 47 - 790MHz, which includes terrestrial TV, DAB
and FM reception.
The trunk outputs allow the cascade of multiple switches, to support large installations.
The trunk outputs have a 75ohm self-termination toggle switch. If the Switch is the last in the cascade, or a
standalone Switch, the toggle switch can terminate the trunk outputs without the need for 75ohm terminators.
The DC power can be inserted into the switch, on the F connector, or at any point in the system. In cascaded
systems, multiple power supplies might be required.
dSCR Multiswitch
TdSCR504/508/512
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Switch Installation
The equipment should be mounted in a well-ventilated area.
Connect the power supply to the switch, and switch on. When connected, a green LED on the front of the switch
should be lit. No powering from the Set Top Box is required.
The power supply can feed up to 4 Multiswitches (4 x 4 outputs). All four Satellite trunks have DC available on inputs
and outputs, except if the switch is used as a terminated unit. There is no power on the Terrestrial trunk line. All
unused dSCR/Legacy (Tap) outputs should be terminated with a 75-Ohm terminator to maintain good terrestrial
signals.
All trunk outputs can be cascaded. If the switch serves as a terminated unit, turn on the switch marked “terminate
line outputs”.
Configuration of the Switch
Terrestrial amplifier
The Terrestrial trunk has an integrated amplifier, with unity gain on the dSCR output, that can be attenuated by up to
20dB.
Satellite input
The Satellite input level to the switch, should be between 70dBuV and 100dBuV. There is no adjustment required, as
the switch has Automatic Gain Control (AGC) within this dynamic range.
Input Modes: Quattro and Wideband
The input connections on the product can be configured in either “Quattro mode” or “Wideband mode”.
When using Quattro LNBs,
the toggle switch on the top right hand side of
each
Switch should be set in the upper
position (Quattro LNB). The Switch will then expect to receive, on each of the 4 inputs, a satellite signal from 950 to
2150MHz (Horizontal/Vertical High and Low band).
When using wideband LNBs,
the toggle switch, on the top right hand side of
each
Switch should be set in the lower
position (Wideband LNB). In this case, wideband satellite signals from 290 to 2340MHz should be used (Vertical and
Horizontal).
In this mode, 2 wideband LNBs can be connected, for signal reception from 2 orbital positions. The left wideband
inputs V-H are the DiSEqC position “LNB A”, and the right V-H inputs are the DiSEqC position “LNB B”.
dSCR Multiswitch
TdSCR504/508/512
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V Sat A
V Sat B
H Sat A
H Sat B
Terr
Note: when using the product in wideband mode, the product will automatically make the translation between the
input frequency and the output frequency. For example a STB tunes to Horizontal High band, the product will
convert the incoming horizontal band 1290- 2340MHz into the output range between 1100-2150MHz.
The same is true when using the product as a Wideband dSCR multiswitch. If the STB tunes to a Vertical Low band
channel, 1000MHz for example, the multiswitch will take the incoming vertical transponder at 340MHz and convert
to Sat IF 1000MHz and output to one of the dSCR output user bands.
The diagram above shows the basic frequency relation between wideband satellite frequencies and the standard
legacy satellite frequencies.
Output: Legacy and dSCR
Independent of the selected input mode, the outputs can support legacy and SCR/dSCR Set Top Boxes.
At start up, the Switch output works in Legacy mode and can be used as a universal, or a 2 x wideband multiswitch,
depending on the position of the toggle switch.
When receiving the first dSCR command, the unit will automatically switch into dSCR mode and supports the
following standards:
dSCR Multiswitch
TdSCR504/508/512
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Sky UK standard for SkyQ STB’s
SkyQ STB’s support 16 userbands
EN50494/SCR standard (DiSEqC 1.0)
STB’s that only support EN50494 will only be able to use the first 4 user bands.
EN50607/dCSS/dSCR standard (DiSEqC 2.0)
STBs that support the newer EN50607 will be able to use all user bands (UB1 through UB16). This is typical for new multituner STBs.
To return back to legacy mode, the output has to be reset. This can be done by removing the DC from the output
connector, disconnecting the power from the STB.
Supported output User Bands and Frequencies
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