User Manual

SGD-SB2025NT-TUM, Part 2
Jan 12 Page 60 SOLAR COMMISSIONING
5.4 C HANNEL S ETUP
The ‘Channel Setup’ page for an Analogue system, shown below in Figure 54 , is accessed via the
‘Setup’ button on the Channel Status Panel of the TM ET main window as shown in Section 3.4.2
– Channel Status Panel .
Figure 54. Channel Setup page (Analogue).
Of the parameters that are accessed from this page, those that relate to the operation of receiver
voting are probably the ones that are most likely to have the greater impact upon the successful
operation of the Solar channel. That being the case, whilst there are brief details of each
parameter in the following sections, to complete the information a more in depth description of the
receiver voting function of Solar is given in Section 10 – Receiver Voting .
The ‘Eng’ button must be selected to enable changes to be made and the ‘Apply’ must be selected
to complete the changes.
5.4.1 Name
This facility is used to identify each channel to ensure that settings, tests or simply observations
are being applied to or made on the correct channel when operating in a multiple channel
environment.
The ‘Name’ is entered or edited by selecting the ‘Eng’ button then clicking in the ‘Name’ text box,
which allows direct entry of characters into the text box, the limit is 20 characters. The change is
confirmed by selecting the ‘Apply’ button.
5.4.2 Voting Facilities
5.4.2.1 Minimum RSSI Difference
This sets the minimum difference between RSSI levels before the Voter makes a new selection
(sometimes referred to as level hysteresis). The RSSI level size is determined by the values
entered for the NI boundary levels and input signal type (see Section 5.2.2.1 – Signalling In ).
5.4.2.2 Voter Override
This facilitates the testing of RTN paths. When “ON”, the Voter is forced to select this site and
pass on any speech traffic or test tones from that Station NI. When activated, the ‘Voted Level’
text shows ‘OVR’ and the Station panel displays a Yellow voted indication with a full RSSI level
shown as a Blue bar. The “OFF” state returns the channel to normal operation.