User guide

DM-14B & DM-14C User’s Guide
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• Power measurement accuracy: 1 dB typ. (2 dB max.) with SW corr. (after 5 mins' warm-up)
• MER measurement accuracy: up to 30/32 dB
accuracy, 1 dB typ. (1.5 dB max), with > 40 dBuV power
• Measurement filter BW: 130 KHz at –3 dB
• Measurement stability versus temperature between –10 and 50°C: 0.03 dB/°C
• BER measurement before and after Viterbi:
– bBER up to 1 x 10–5
– aBER up to 1 x 10–8
• Automatic recognition & visualization of: HP/LP rate, guard interval, constellation
– Rate: 1/2, 2/3, 3/4, 5/6, 7/8
– Guard interval: 1/4, 1/8, 1/16, 1/32
– Constellation: QPSK, 16 QAM, 64 QAM
• Automatic digital signal quality TEST: PASS–MARG–FAIL
• CSI measurement: percentage of non–valid carriers 0–100%
• Spectrum inversion: automatic
• Constellation picture: QPSK–16 QAM– 64 QAM with x1, x2, x4 zooms.
• TXT: teletext
QPSK (Demodulated)
• Frequency band: 930–2250 MHz
•
Direct selection of: memory plan, prog., LNB, DiSEqC, transponder freq, with numerical keyboard
• Memorization of: memory plan, program, LNB, DISEqC, local oscillator frequency, trasponder frequency, standard, Symbol Rate
• Frequency resolution: 0.1 MHz
• Input impedance: 75 ohm
• Interchangeable input connector: "F" or "IEC" or "BNC" ("N" optional)
• Power supply at RF IN: in the SAT band for LNB: OFF, +13V, +18V, 22 KHz (0.3 A)
• DiSEqC: 4, 8, 12 or 16 polarizations, DiSEqC "a.b.c.d" already pre–programmed in sequence and very easy to use. It can power any
type of LNB (analog or DiSEqC, single or dual feed) and any type of multiswitch and SAT Router (analog or DiSEqC with 4, 8, 12,
16 inputs)
• LNB current or preamp meas.: 1 to 300 mA
• RF IN automatic preamplifier: this is automatically inserted when the RF input level is less than the set thresholds, it is
automatically calculated from the measurement and the activation is shown by the relative LED on the front panel near the RF input
• Digital power measurement dynamic range at the RF input: from 30 to 123 typ. (126 max.) dBuV, from –30 to +63 typ. (66 max.)
dBmV (selectable) with limit indications: level too low, level too high
• Power measurement resolution: 0.1 dB
• Power measurement accuracy: 1.5 dB typ. (2.5 dB max.) with software correction (after 5 minutes’ warm–up)
• MER and Noise Margin measurement accuracy: 0.5 dB typ. (1 dB max) with SW corr.
• Measurement filter bandwidth in SAT mode: 4 MHz at –3 dB
• Measurement stability versus temperature between –10 and 50°C: 0,1 dB/°C
• QPSK Symbol Rate setting: 2–45 MS/s, in 1 KS/s steps
• BER measurement before and after Viterbi:
– bBER up to 1 x10–6
– aBER up to 1 x10–8
• FEC, automatic recognition & visualiz. of value: FEC 1/2, 2/3, 3/4, 4/5, 5/6, 6/7, 7/8, 8/9
• Automatic Quality TEST: FAIL- MARG - PASS
• Noise margin measurement: from –2 to 12 dB with special algorythm which automatically considers the FEC value
• LNB local oscillator frequency: continuous from 0 to 20.000 MHz, for bands, "L" (direct IF–SAT reading), "S", "C", "KU", "KA";
• QPSK standard selection: DVB/DSS
• LNB frequency measurement: 0 to 3 MHz
• TXT: teletext
CONSTELLATION
Constellation visualization of COFDM, QAM and 8VSB digital programmes, with x1, x2 and x4 zooms, and automatic refreshment.
MPEG2 F.T.A. & NET. ID.
Mod. DL-14 provides all the same information with the images (audio and video) of all the F.T.A. digital programmes.
• MPEG signal format: ETS 300 421
• Video resolution: 720x576, 704x574, 544x576, 480x576, 352x576
• Video decompression type: MPEG1, MPEG2@ML (I, P & B frame decoding)
• Out TV stand.: PAL, NTSC, SECAM (select.)
• Audio decompression: MPEG layer II (MUSICAM)