T.E.M. A07B500S, Manual

Page: 72 / 131

A07B500S manual
Pag. 72
N° FUNCTION CONNECTION
1 NC
2
INPUT RS485 +
3 INPUT RS485 -
4 NC
5 GND
6 NC
7 NC
8 NC
18
COM3B
RS485 to N+1 system
PIN
NUMBER
( DB9 )
9 NC
1
19 Khz sync. out
( 1 Vpp out )
2
EX Carrier enable
input (input contact
open = enable)
3
ALARM1
out (closed or open output
contact / Z1, Z2 - MBA board )
4
ALARM2 out (closed or open output
contact / Z1, Z2 – MBA board )
5 GND
6 NC
7 NC
8 NC
19 IN/OUT
PIN
NUMBER
( DB9 )
9 NC
5
EXTERNAL MONO / MPX
INPUT ADJUSTMENT
Trimmer RT5 / AUDIO IN board
-2 / +2 dB adj. for 75 Khz modulation frequency
4
SUBCARRIER 1
INPUT ADJUSTMENT
Trimmer RT1 / AUDIO IN board
-20 dBu adj.
15
SUBCARRIER 2
INPUT ADJUSTMENT
Trimmer RT2 / AUDIO IN board
-20 dBu adj.
10
NOMINAL VALUE LF
INPUT SETTING
Jumpers Z3,Z4,Z5,Z6 / AUDIO IN board
0 , 4.1 , 6 , 12 dBm setting choice
22
FIXED OR VARIABLE
INPUT SETTING
In vaariable position the nominal input value can be changed by
the trimmer of MPX , LEFT and RIGHT
9
PREEMPHASIS
VALUE CHOICE
Jumpers Z8,Z2 / AUDIO IN board
50 / 75 microseconds choice
8
MONO INPUT ( L / R )
IMPEDENCE CHOICE Jumpers Z1,Z7 / AUDIO IN board
600 Ohm / 10 Kohm choice
7
LEFT INPUT
ADJUSTMENT
Trimmer RT4 / AUDIO IN board
-2/ +2 dB adj. for 75 Khz modulation frequency
6
RIGHT INPUT
ADJUSTMENT
Trimmer RT3 / AUDIO IN board
-2 / 2 dB adj. for 75 Khz modulation frequency
11-12
SCA1 & SCA2
INPUTS
BNC connector
3 EXTERNAL MPX INPUT BNC connector
1 GND
2 LEFT
+
(unbalanced with GND)
14 LEFT INPUT
PIN
NUMBER
(Cannon)
3 LEFT –
(balanced with LEFT+)
1 GND
2 RIGHT
+
(unbalanced with GND)
13 RIGHT INPUT
PIN
NUMBER
(Cannon)
3 RIGHT –
(balanced with RIGHT-)
2 RF OUT N connector
1 LINE SWITCH AND FUSE 6 A FOR 230 Vac / only FF model (very fast)