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    Products >EMP Satellite Switches> Accessories                                                                                                          

S. 122-A (Tap)

A dual passive signal splitter with 4 SAT inputs and 1 terrestrial input, designed for connection with cascade taps S.121-A. This is de facto a system of 5 splitters in one unit. DC is passed through from outputs to inputs. Satellite inputs are used for connection of 1 Quatro or 2 Dual or Twin LNBs, terrestrial input for connection of TV or FM antenna or a preamplifier. The inputs of the unit can also be connected to the outputs of the amplifier S.156-MP. The units are stackable onto the top of each other.

    Specifications of S. 122-A

 Frequency Range

 LNB Inputs and Outputs

 950-2300 MHz

 Terr. Input and Output

 5-862 MHz

 Insertion Loss

 950-2300 MHz

 5 dB avg.

 5-862 MHz

 6 dB avg.

 Isolation between Inputs


 40 dB min.

 Isolation between Outputs for the same Input


 20 dB min.

 Current Drawn


 0 mA

 Dimensions (w,d,h [cm])


 12.6 x 10.5 x  4.1

 Temperature Range


 –25 °C - +60 °C

Examples Of Utilization:


P. 168  (8 in, 1 Out)

8in/1out switch designed for direct connection of up to 8 SAT IF inputs to one receiver. Inputs are selected by DiSEqC 1.2 command "Goto nn" (6B), or by protocol DiSEqC 1.1. Inputs 1 to 4 are selectable also by command "Write NO" (38), which makes the unit compatible with standard DiSEqC 4-input switching. The unit is short-circuit protected.

    Specifications of P. 168

 Frequency Range

 950-2300 MHz


 DiSEqC 1.1, 1.2

 Insertion Loss

 5 dB avg.


 30 dB avg.

 LNB current

 400 mA max.

 Current Drawn

 50 mA max.

 Dimensions (w,d,h [cm])

 13.6 x 10.4 x 3.3

 Temperature Range

 –30°C - +70 °C

Examples Of Utilization:



P.168 Installation Instructions

1. Connection of cables
The switch P.168 includes 8 input connectors and 1 output connector. Coaxial cables from particular LNBs (satellite converters) shall be connected to input connectors (INP1 to INP8). It is advisable to note down assignment of the inputs. The output connector (OUT) shall be interconnected through a coaxial cable with a satellite receiver.
For a long-lasting operation of the switch it is advisable to use high-quality coaxial cables designed for frequencies up to approx. 2 GHz.

2. Receivers setting
The receiver setting method differs depending on the control mode of the switch P.168, and on the DiSEqC protocol version supported by your receiver.

A/ Setting according to DiSEqC 1.1 protocol

If your receiver supports DiSEqC 1.1 protocol, set correct data in the fields for "uncommitted switch" for each of the connected LNBs in the configuration menu. (The switch does not react to standard switching commands A to D according to DiSEqC 1.0 standard)


    Set the values for individual LNBs according to the following table:

 INP 1

uncommitted switch 1

 INP 2

uncommitted switch 2

 INP 3

uncommitted switch 3

 INP 4

uncommitted switch 4

 INP 5

uncommitted switch 5

 INP 6

uncommitted switch 6

 INP 7

uncommitted switch 7

 INP 8

uncommitted switch 8


B/ Setting according to DiSEqC 1.2 protocol

If your receiver does not support DiSEqC 1.1 version, but supports DiSEqC 1.2, receiver setting shall be carried out as if you had a DiSEqC motor. One of the satellites to be received shall be selected along with continuous holding of the push-button for motor rotation depressed (East or West) until the signal of respective satellite appears in a sufficient intensity and quality. Then stop the rotation immediately and save the found position. Repeat the search for all connected LNBs.)
C/ Setting according to DiSEqC 1.0 protocol

This type of switch does not react to standard setting of positions A,B,C,D. However these commands can be used to control a primary DiSEqC standard switch, e.g. the two-input P.162-IW or four-input P.164-IW. Using a combination of standard (committed) and uncommitted commands, it is possible to switch up to 32 LNBs.

Note: The configuration procedures for particular receivers can differ. The instructions included in the operating manual of your receiver shall be followed.

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