Specifications

Section-3 Operation
October 17, 2013
3‐70
Copyright©2013,HarrisBroadcast
WARNING:Disconnectprimarypower priortoservicing. 888‐2693‐004
Warning
CHANGING THE CARRIER AND CARRIER LEVEL (IF CARRIER IS ON) SETTINGS
ON THE NICAM SETUP 1 SCREEN WILL CAUSE THE TRANSMITTER TO MUTE
TEMPORARILY.
Figure 3-66 LPU Analog NICAM Screens 4 & 5
Table3‐64XmtrHome>ExciterHome>Setup>AnalogModulator(NicamScreens4&5)
Field Explanation
Ni
camSetup1SubWindow (Screen4)
Modulation
Choicesar
eOfforOn.
Thiscontr
olturnstheNICAMmodulationOfforOn,buttheNICAMcarrierremainsOn.
ReserveFla
g
ChoicesareOfforOn.
ThiscontrolswitchestheReservesoundSwitchingFlagintheNICAMcoder.
Preemphasis
Choicesar
eOfforOn.
Thisse
tsthepreemphasisaccordingtoITV‐TRec.J.17.
Gain1
SetdB
.
Thisisanad
justmentfortheinputgainadjustmentforthesound1input,thisistheinput
fortheM1/Laudioinput.Theadjustablegainrangeis‐9,9to+6dB.
Gain2
SetdB
.
Thisisanad
justmentfortheinputgainadjustmentforthesound2input,thisistheinput
fortheM2/Raudioinput.Theadjustablegainrangeis‐9,9to+6dB.
Carrier
ChoicesareOfforOn.
ThiscontrolturnsboththeNICAMcarrierandmodulationOfforOn.
Carrierlev
el
SetdB
.
ThisistheNI
CAMcarrierleveladjustmentindBbelowthevisionpeakofsynccarrierlevel.
Theadjustablerangeis‐18to‐30dB.
CoderCon
trol
ChoicesareAutoorManual.
CoderControlforselectionoftheHighPriorityparameterlistedonthenextscreen.
Select‘Ne
xt’toproceedtoAnalogNICAMSetupScreen2.
Ni
camSetup2SubWindow (Screen5)