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USER’S MANUAL. US TV EXPLORER II
01/2008
Page
1
En
g
lis
h
US TV EXPLORER
II
1
1 GENERAL
1.1 Description
The television explorer
US TV EXPLORER II
represents an evolutionary step with
respect to the traditional field strength meters. The continuous
PROMAX
innovation
process in the sector of field strength meter yields an instrument that changes the way
to take and understand television signals measurements.
This equipment incorporates important advances in the
functional
aspects as
well as in the
ergonomics
to allow the installers to make their work with maximum
comfort
and
speed.
Simultaneously the instrument is
reliable
for any possible problem
at the
input signal
, at the
distribution components
or the
receiver equipment
.
The
US TV EXPLORER II
has been designed to satisfy all the necessities of
measurement during the
transition from the analogue transmissions to digital
in
terrestrial
,
satellites
and
cable
systems. Allowing measurements of
analogue
signals
as well as
digital ones
. When pressing the
auto identification
key, it searches and
identifies the
signal under test.
First it recognizes whether the signal is an analogue
channel or a digital one. When the signal is digital (
ATSC
,
DVB-S/S2
,
ITU-T J.83/B,
DVB-C,
DSS
), it analyses for each modulation type
8-VSB
/
QAM
ANNEX-A
/
QAM
ANNEX-B
/
QPSK
/
8PSK
all the associated parameters:
symbol rate, code rate
, etc.
and determines the value of the signals under test.
The range of frequencies covered makes this instrument an excellent tool for
FM
radio
,
terrestrial TV
,
mobile TV
,
satellite TV
and
cable TV
(where the subband tuning
margin, from 5 to 45 MHz, enables the user to carry out tests on the return channel).
The
US TV EXPLORER II
adapts itself to the characteristic parameters of the
standard and to the correct automatic system in order to obtain in all the cases an
accurate measuring of the input signal level. It accepts the
NTSC
TV system and allows
the user to work directly with
digital TV
signals decoding them, so that the television
image may be viewed, and directly measuring the power, carrier/noise ratio (
C/N
), the
bit error rate (
BER
) and the modulation error ratio (
MER
), as well for
ATSC
(
8-VSB
) as
DVB-S
(
QPSK
),
DVB-S2
(
8PSK
),
DSS
(
QPSK
),
DBV-C (QAM Annex-A)
and
ITU-T
J.83/B
(
QAM Annex-B
) signals. This instrument allows to obtain besides a graphical
representation of the
Constellation Diagram
for
DVB-S/S2 (QPSK/8PSK),
DVB-C(QAM)
and
ITU-T J.83/B (64/256-QAM)
signals.
1
Trademark of the DVB - Digital Video Broadcasting Project (4914).
Summary of Contents for US TV EXPLORER II
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