|
Whether for routine maintenance or new interactive network installations,
CaLan products offer a range of solutions. These products cover the entire 5 MHz
to 1 GHz frequency range with exceptional speed – 60 channels of visual and
aural carriers in less than 2 seconds.
2010 This SLM offers built-in comparison and analysis
capability as well as the standard signal level measurements. It can also
receive ingress data transmitted by the 3010H.
Cost-Effective Signal-Level Measurement The portable, rugged
2010 SLM Plus provides an affordable, entrylevel option for customers.
Measurements include carrier amplitude, digital channel power, carrier-to-noise
ratio, and hum. The fourchannel adjustment mode allows technicians to view four
channels at a glance, for a quick, system-wide check of the lowest, highest and
AGC pilot frequencies.
Digital Power Measurement Digital signals cannot be measured
with conventional methods used for video carriers because their power is spread
over a band unique to each form of digital signal. CaLan products incorporate a
digital signal measurement capability – technicians need only enter the center
frequency, span and format for each digital signals in the unit’s channel table.
The family also provides accurate average power measurement for return path TDMA
(bursted) carriers.
Digital signal power is the total average power over a channel bandwidth
around its center frequency. The 2010 can adapt to the unique bandwidth power
characteristics of digital signals to make measurements as simple as reading a
number on the display.
Data Storage The 2010 can store up to 90 history files in
any one of six formats: level measurements, normalized channel scan traces,
sweep traces, spectrum scan traces, and ingress measurement results. Each file
includes time and date stamps with a 40-character, user-defined label.
MEASUREMENT SPECIFICATIONS Digital Signal Power Levels
Formats: QAM, QPR (DMX), QPSK, and VSB, bursted Amplitude Accuracy: ±1.5 dB
(typical)
TDMA Measurement Range Burst width: >50 µ sec
Burst repetition rate: <1.5 sec
Frequency Range: 5 MHz
to 1 GHz Source Accuracy: ±25 kHz Resolution: 10 kHz Tuning Configuration:
Standard, off the air, HRC, IRC, PAL, SECAM, user-defined IF bandwidth: 230 kHz
Video bandwidth 300 kHz, automatic 10 Hz C/N
Amplitude Accuracy For
Sweep and Carrier Measurements Range: +70 to -45 dBmV Typical Accuracy:
±1.0 dB Calibrator: ±0.25 dB at 113.36 MHz, ±0.2 MHz Frequency Flatness: ±0.5 dB
Internal Preamp On: ±1.0 dB Attenuator: ±0.5 dB Log Linearity: ±0.5 dB
Resolution: 0.1 dB Input Impedance: 75 ohm Input Match: 0 dB attenuation, >14
dB; all other settings, >20 dB
Ingress Measurements
Burst Count Minimum Burst Width: <30 µSec Capture Ranges: < 100
µSec - < 1 Sec Sec in decades, < 3 Sec and > 3 Sec Average Noise Power
Maximum TDMA Pulse Width Not Captured: >500 mSec
Hum
Range: 0.5 to 5% Resolution: 0.1% Accuracy: ±0.2%, ±30% of reading
Carrier-to-Noise Ratio Range: 50 dB Accuracy: ±2 dB
Repeatability: ±1 dB
|
