Chapter 6 - Measuring range
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Note:
Switched-in antenna wall outlets or poor signal conditions could impede the SCR-ADR scan.
The search function in the operating mode of UNICABLE and JESS has been deactivated.
6.5.4 JESS
JESS (Jultec Enhanced Stacking System) is an expansion on UNICABLE Standard with a larger
range of functions. Among other functions, it supports 16 UB slots and allows the frequency of the
individual slots to be read directly from the converter unit. The transmission of the commands occurs
exactly as described above for UNICABLE and in accordance with the DIN EN 50494 standard.
6.5.4.1 Activation and Configuration
The JESS control is activated by selecting
LNB
->
DiSEqC
->
JESS
.
Afterwards, a menu appears, allowing users to select the user band (UB) bandpass slot for the
measuring receiver to use and edit the corresponding centre frequency. These parameters can be
obtained from the data sheet of the converter unit being used. 16 UB slots are available in one bank.
Individual UB frequencies can be edited as described above for UNICABLE.
The following figure shows the instrument in JESS mode with the LNB menu open.
6.5.4.2 Operation
The JESS control can be used to convert 16 SAT-IF layers in a maximum of 16 UB slots. These are
further divided into 4 satellite positions with 4 SAT-IF layers each. Each connected receiver
(maximum of 16) operates using a dedicated UB slot. This is defined via the UB number.
These JESS control parameters are set via
LNB
->
SAT-IF-Layer
->
Satellite
and ->
UBs
.
The measuring receiver is tuned as described in the “Frequency input” chapter.
The difference when using the JESS control is that the desired transponder frequency is converted to
the centre frequency of a UB slot in the converter unit.
That means that the measuring receiver must send the transponder frequency to the converter unit
as a JESS command and then tune itself to the correct UB slot centre frequency.
Whenever there is a new tuning process, the entire JESS control command is sent to the converter
unit again. Because JESS enables the use of up to 16 receivers connected to one cable, clashes
may occur between the connected receivers during control. If this situation arises when using the
measuring receiver, send the control command again by pressing the
ESC
and
ENTER
key
combination.
- Scan UBs
When this menu is opened, the number of available UB slots on the connected converter is
determined, and they are displayed along with their centre frequencies.
