Broadcast Warehouse TX 25/50, Technical Manual, Page: 5 / 40

TX25/50 FM Transmitter technical manual
page 5
Introduction
1.3 FRONT AND REAR PANELS
FUSE
1
2
3
4
5
67
8
9
11
13
12
10
T
X
25/50
FM TR
ANSMIT
TER
1.
Lef
t audio input
2.
Lef
t Input gain
3.
Right input gain
4.
Right audio input
5.
MPX output
6.
MPX level control
7.
MPX Input
8.
Control / Logic
9.
R.F
. output
10
LCD display
11
.
Power socket
12.
Up / Down frequency buttons
13.
Chassis ground post.
Control / logic D-type pin out Pin 1
PLL
failure alarm (O/C)
Pin 2
Reserved
Pin 3
Reserved
Pin 4
R.F
. failure alarm (O/C)
Pin 5
R.F
. failure alarm (TTL)
Pin 6
Mod failure alarm (TTL)
Pin 7
PLL
failure alarm (TTL)
Pin 8
R.F
. Mute (Connect to GND for mute)
Pin 9
Mod failure alarm (O/C)
Pin 10
RS232
TXD
Pin 1
1
RS232 RXD
Pin 12
Reserved
Pin 13
Reserved
Pin 14
+18 VDC 200mA
Pin 15
GND
XLR
Audio input connectors
Pin 1
Ground
Pin 2
Hot
Pin 3
Cold
3
2
1
15 14 13 12 1
1 10 9
8 7 6 5 4 3 2 1
Front p
anel:
R.F
. MONIT
OR: -50dBC ( Not suit
able for harmonic measurement
s )
MOD.
MONIT
OR: ( Buf
fered multiplex, Nominally 3 V peak to peak for 75 KHz )