Naval Electronics AB BM450 Technical Manual

BM450 DSB modulator for S-channels
Naval's new double side band S-channel TV modulator
BM450 is designed for operation in the frequency range
of 245.25-463.25 MHz in PAL B/G, D/K, I, and NTSC
M/N systems. High adjustable output level is significant
for this unit. The modulator is equipped with two
individual input level adjustments for video and audio
signal.
Technical specifications
HF
Frequency Range: 245.25 - 463.25 MHz (S13-S41)
Output level:
Frequency Range with reduced
output level: 455.25 - 463.25 MHz (S40 and S41)
Output level:
Spurious output:
Harmonics:
Attenuation adjustment:
RF out RF out
Output impedance:
0-2 0 dB 0-2 0 dB
Video
Au dio Impedance:
udi o
Level:
x1 x1
MH z MH z
Audio
x10 x10
MH z MH z
Impedance:
x10 0 x10 0
Level:
MH z MH z
Audio udio
Le Leve l el
Misc.
Aud io
EMC:
in
Operation temp.range:
Video Video
Leve l el Le
Supply voltage:
Current consumption:
Vide o Vide o
in
Size (mm):
BM 45 0
Weight:
Order No:
Controls front panel
A - RF out, TV signal from modulator.
B - Attenuator control.
RF out RF out
A
C - Audio, adjust the audio subcarrier.
Pos.
B
0-2 0 dB 0-2 0 dB
0
1
C
Au dio ud io
2
3
x1
D
MH z MH z
4
x1 0 E
5
MH z MH z
x1 00
F
Positions 6 to 9 not used.
MH z MH z
Aud io
G
Leve l
D, E and F - The output frequency is
adjusted with three switches x100
Aud io
H
in
representing 100 MHz steps, x10
representing 10 MHz steps and x1
Vide o Vide o
I
Leve l
representing 1 MHz steps. Eg. for setting the
frequency to channel 13 (245,25 MHz) the
Vid eo Vid eo J
in
switches should be set as follows:
x1
x10
BM 45 0
x100 2
G - Audio, adjust the audio input level.
H - Audio signal in from e.g. VCR.
I - Video, adjust the video input level.
J - Video signal in from e.g. VCR.
Technical manual
µ
min 92 dB
µ
min 90 dB
<-60 dBc
<-60 dBc
0 - 20 dB
75 Ohm
75 Ohm
nominal 500 mV
>10 kOhm
nominal 500 mV
EN 50083-2
-40 - +60 o C
24 V DC ± 10%
100 mA (approx)
(H) 210 x
(W) 41X (D) 96
0.55 kg
250.145
Frequency System
4.5 MHz M/N, NTSC
5.5 MHz B/G, PAL
6.0 MHz I, PAL
6.5 MHz D/K, PAL
- -
5.5 MHz + Testbars
5 (5x1 MHz)
4 (4x10 MHz)
(2x100 MHz)
© Copyright 2003 Naval Electronics AB
Installation
The module can be installed into a cabinet or
separately. The supply voltage is fed from the power
supply to the unit by loop-connecting the supply
cable from module to module. When combining the
signals to a CAS 3000 system special precaution
needs to be taken to avoid interference with terres-
trial signals.
Dimensions
V
V
pp
Mounting depth
required with
cables: 155 mm
rms
Connectors
Video in: RCA connector female, pict. (A)
Audio in: RCA connector female, pict. (A)
RF out: 75 Ohm BNC female
DC connector: Upper gable, pict. (B)
A
RCA
connector
(Phono plug)
Höjdrodergatan 18, SE-212 39 Malmö, Sweden
Tel. +46(0)40-29 20 45. Fax +46(0)40-18 74 13
E-mail:sales@naval.se
B
DC
connector
Naval Electronics AB
www.naval.se
6130