46
Chapter 6 - SAT Measuring Range
106 V3.2
JESS (EN 50607)
6.4.5
JESS (Jultec Enhanced Stacking System) is an expansion on the EN 50494 standard (UNICABLE).
The following additions to UNICABLE have been incorporated:
•
Up to 32 UB slots are supported (8 with UNICABLE).
•
Up to 8 satellite positions can be controlled (2 with UNICABLE).
•
The frequency of the JESS converter can be set in 1 MHz increments (in 4 MHz increments
with UNICABLE).
6.4.5.1
Activation and configuration
JESS control is activated by selecting
LNB
->
DiSEqC
->
JESS
.
A menu is then displayed which can be used to edit the relationship between the satellite channel
router (SCR) address and the center frequency of the user band (UB) bandpass slot that the
measuring receiver is to use. There are up to 32 UB slots in one Bank. To select a UB use
ENTER
->
set
to active the JESS control of the measuring receiver.
Figure 6-22 Jess UB selection
Entering of the User Band center frequency
Select the item
edit
in the menu above to open a submenu where you can set the UB center
frequency that corresponds to the selected SCR address. This is the frequency that a connected
receiver needs to tune to. Use the ↑/↓ keys, the ← and → keys, or the numeric keypad to set the
UB center frequencies within the range from 950 MHz to 2.150 MHz.
Press
ENTER
to save the entry; the menu with the SCR address list reappears.
All entries are stored in non-volatile memory; the instrument will operate using these settings when
it is next switched on.
These parameters can be obtained from the data sheet of the JESS unit being used or, more
simply, read directly from the JESS unit using a DiSEqC command (chapter 6.4.4.3 - Reading UB
Entering a startup time for the user band
The time that a connected multiswitch needs to power up after applying LNB supply, you can enter
in ms. The default setup is 700ms. That time have to be increased, if the JESS devcie wills not
react after calling the first time from tuning memory. See Figure 6-18 Entering a startup time for
