BW Broadcast TX5 FM Broadcast Transmitter Technical Manual page 11

Using a transmitter with external audio processor/stereo generator
and with RDS encoder (sidechain connection)
This is the best connection in terms of pilot and RDS subcarrier phase syncronization and MPX spectrum cleanli-
ness.
1.
Remove the screws holding the smaller section of lid (above the power supply module) and place to one
side.
2.
Locate the main board on the right side of the transmitter. Locate jumper
J5 right behind the BNC connectors. Move it to left position (Loop-
through off).
3.
Reassemble the lid back on.
4.
Place a transmitter in a well ventilated space. If it's rack-mounted,
leave at least 1U free above and below it for adequate cooling.
5.
Connect the antenna to the RF output 7/16" connector on the back of the transmitter.
6.
Connect the MPX output of your audio processor (or stereo
generator) to the MPX input on the back of the transmitter.
7.
Connect the Pilot output of your audio processor (or stereo
generator) to the Reference input on your RDS encoder.
8.
Connect the MPX output of your RDS encoder to the SCA
input on your audio processor.
9.
Plug the power cord into the power supply module on the rear
panel of the transmitter.
10.
Once the transmitter is operating, set the correct carrier fre-
quency from the front panel (this can also be locked and set
internally).
11.
Adjust the desired power output level using front panel.
Check reflected power is OK.
12.
Check the modulation level - if the modulation level is low, adjust the MPX output level on your audio
processor (or stereo generator) and/or the MPX input level on the back of the transmitter. The maximum
modulation should not exceed 75kHz.
13.
Check the documentation that came with your audio processor on how to set/check the proper pilot
injection level.
14.
Check the documentation that came with your RDS encoder on how to set/check the proper RDS injec-
tion level.
That finishes the set-up. A much more detailed explanation is available in the appropriate sections of this manual
as well as additional options. You should read through it!
BW Broadcast technical manual
1.4 Quick set-up guide
RDS encoder
BW Broadcast
Transmitter
Audio processor
MPX
OUT
IN OUT
RF OUT
MPX
BW Broadcast
Transmitter
MPX Audio processor
OUT IN
IN OUT
RF OUT
MPX
BW Broadcast
IN
MPX
OUT IN
MPX Loopthrough Jumper
IN OUT in off position
RF OUT
MPX
Transmitter
Audio processor
MPX SCA PILOT
OUT IN OUT
IN OUT
RF OUT
MPX
BW Broadcast
Transmitter
MPX connections
Introduction
Page 11