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Sencore SLM 1456
Signal Level Handheld Meter
Discontinued
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- All Channel/Frequency Tuning: From 5 to 870 MHz; allows you to
test return path signals and up to your highest channel or
frequencies with ease
- Auto-Attenuation: from -40dBmV to +60 dBmV for full signal
measuring capabilities
- Analog Signal Measurements: That Include signal level,
audio-to-video ratio, and carrier-to-noise for full analog signal
analyzing.
- Digital Signal Measurements: That include: Average peak power,
MER, bBER, and constellation. Includes digital signal demodulation
for QAM 16, 32, 64, and 256, plus demodulates 8 VSB Broadcast
signals. Includes constellation display
- Signal leakage: Testing capabilities with audible tone, leakage,
level adjustment, and adjustable threshold
- Ingress testing capabilities: Test both forward and return paths
for unwanted noise
- Full featured spectral display: provides the user with a complete
channel spectrum, or bar display for quick review of all carriers to
verify if one is missing. Plus, a quick and easy tilt
- Datalogger system: Allows the user to save and print all data for
future reference or drop point comparisons
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Sencore
SLM 1456
Shown
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Today's cable systems have changed dramatically. In fact, they are no
longer just cable systems, they are broadband cable networks featuring
HD Video programming, high-end audio, high-speed data, and telephony.
All this new technology requires more sophisticated, more detailed
methods of testing by maintenance techs and installation techs. The New
SLM 1456 from Sencore answers these needs by providing complete
measurement for both analog and digital signals. |
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| Features |
| Spectral Display |
| Single Channel Display |
It is often a necessity
to look at a single channel spectrum display and look for
interference. The Sencore SLM-1456 allows you to tune to a
signal 6MHz channel anywhere in the 5 - 870 MHz band and to
display a full spectrum view of that channel |
| Full Spectral Display |
Many technicians also want to see a spectral
view of all the frequencies on a display so they can see if
there is interference between the carriers. Some also like a
quick glance to look at system balance or just to verify that
all the carriers are present. The Sencore SLM-14-56 Full
spectral Display allows you to view your full channel line up or
a specific channel or frequency for quick and accurate signal
troubleshooting and verification, including the sub-band reverse
path. |
| Troubleshoot RF |
Simple and easy to understand displays for
both analog and digital signal parameters provide you with all
the information you need to troubleshoot and analyzes RD
signals. Includes Level, C/N, and A/V Ratio) |
| Digital Signals |
| Digital Measurements |
Digital has become a buzz word in the
industry, But digital cal mean many different type of signals
available on today cable networks: QAM, used in several
different digital formats that could include 16, 32, 64, or 256/
QPSK is used in the return side of the hi-speed cable and even
8VSB (typically used by offair broadcasters for HD signals.). A
cable system could include any of these "digital" signals.
To truly test and troubleshoot digital signals you need to
measure several parameters including:
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Average peak power
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BER
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MER or SNR
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Constellation |
| Ingress measurement |
System
Ingress |
Having the ability to test both signal and
digital parameters is very important in providing a good clean
signal to the subscriber, but there is another area that has
always been important and, with the advent f digital signals, had
come to the forefront: System ingress.
Ingress can cause ghosting, co-channel and a variety of other
problems with the typical analog signal. But with digital
signals, ingress could mean a complete loss of picture. A Large
portion of ingress type problems come directly from the
subscriber's side of the drop. Operators are recognizing this
face, and have begun to require all technicians and installers
to test for system ingress. In other to provide a quality
digital signal to the subscriber, testing for ingress has become
a must in the industry. |
| Analog Signals |
| Analog Measurements |
Most Cable systems still provide basic RF
signals. Infact a majoty of the programming that is available is
still analog, or at least being provided in analog at this
point. Advanced analog testing is still vital to ever cable
system.
The Sencore SLM 1456 includes the following measurements:
- Video Level
- Audio Level
- C/N
- A/V Ratio |
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| Specifications |
| Automatic/Manual Spectrum
Analysis |
| Frequency Range |
5-870 MHz |
| Dynamic Range |
>60dB |
| Resolution Bandwidth |
100KHz |
| Reference Level |
TV from 10dBuV to 125BuV |
| Marker Frequency |
5-870MHz |
| Marker Analog Or Digital |
Automatic |
| Bar Scan |
From 19 to 120 Channels (selectable) |
| Storage of bar scan |
Up to 20 pictures |
| Analog Measurements |
| Frequency Band |
TV and Radio 5 - 870MHz |
| Frequency Resolution |
62.5KHz |
| Input Impedance |
75 Ohms |
| Dynamic Range measurement |
15 dBuV to 125dBuV
or -45 to +65Bmv
or -98 to +16dBm |
| Measurement resolution |
0.1dB |
| Level Measurement Accuracy |
1dB Typical (2dB max) |
| A/V Ratio |
1.5dB Typical (2dB max) |
| C/N Ratio |
2dB Typical (2dB Max) |
Measurement filter
bandwidth |
600 memory positions |
| Digital Measurement |
| Frequency Band |
47 - 870 MHz |
Power measurement:
dynamic range |
From -35 to 56 dBmV |
BER
Measurement |
General |
dBER up to 1x10-8 |
After Reed–Solomon
error correction |
aBER up to 2x10-9 |
| MER measurement |
17 dB to 36 dB |
| Constellation display |
64-128-256 (on graphics display) |
| General Specifications |
Voltmeter
function |
AC (square wave), DC, 0 to 100V |
Channel plan master
copy function |
Optional VIA PC |
| Power supply |
Type |
Built-in NI-CD Rechargeable battery |
| External Power Supply |
17 VAC or 20 VDC, 1A |
| Adapter |
120V AC/DC Adapter |
| Battery Duration at 25°C |
4 - 6 hours in analog mode
3 - 4 Hours in Digital Mode |
Physical
Specifications |
Size (H x W x D) |
11.8" x 4.33" x 2.36" |
| Weight |
2.7 LBs |
| Download port |
RS-232 Standard serial Port |
| Display |
128 x 128 pixels, 2.5" Square |
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| Ordering Information |
| Model |
Description |
Buy Online |
Price |
| SLM1456 |
Sencore SLM 1456 Signal Level Analyzer DISCONTINUED |
Discontinued |
| Included Accessories
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- 1 - 12 V AC/DC adaptor
- 1 - USB 2.0 cable
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Included |
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