User guide

DM-14B & DM-14C User’s Guide
75
8VSB (Demodulated)
• 8VSB frequency band: 47–878 MHz
• Direct selection of: memory plan, program, chan., dc at RF IN, freq., with numerical keyboard
• Memorization of: memory plan, program, channel, dc at RF IN, frequency, constellation, symbol rate, frequency offset
• Frequency resolution: 62 KHz
• Input impedance: 75 ohm
• Interchangeable input connector: "F" or "IEC" or "BNC" ("N" optional)
• Power supply at RF IN: in the TV band for preamp.: OFF, +5, +12, +15, +18, +24 V (0.3A)
• 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
• Power measurement dynamic range at the RF input: from 35 to 126 dBuV, from –25 to + 66 dBmV (selectable) with limit
indications: level too low, level too high
• Power measurement resolution: 0.1 dB
• Power meas.accuracy: 1 dB typ. (2 dB max.) with SW correction (after 5 minutes' warm-up)
• Measurement filter BW: 130 KHz at –3 dB
• Measurement stability versus temperature between –10 and 50°C: 0.03 dB/°C
• MER & BER measurement
• Constellation vision
• 8VSB symbol rate selection:
from 1000 to 8000 MS/s (1 KS/s steps)
(bit rate from 2000 to 6000 Mb/s)
COFDM (Emulated)
(supplied, selectable and storable)
• COFDM frequency band: 4–878 MHz
• Direct selection of: memory plan, program, chan., dc at RF IN, freq., with numerical keyboard
• Memorization of: memory plan, program, channel, dc at RF IN, frequency, number of carriers, constellation, channel width, offset
freq.
• Frequency resolution: 62 KHz
• Storable offset frequency: in 62 KHz steps
• Input impedance: 75 ohm
• Interchangeable input connector: "F" or "IEC" or "BNC" ("N" optional)
• Power supply at RF IN: in TV band for pream.: OFF, +5, +12, +15, +18, +24 V (0.3 A)
• 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
• Power measurement dynamic range at the RF input: from 35 to 126 dBuV, from –25 to + 66 dBmV (selectable) with limit
indications: level too low, level too high
• Power measurement resolution: 0.1 dB
• Power measurement accuracy: 1 dB typ. (2 dB max.) with software correction (after 5 minutes' warm–up)
• C/N ratio measurement accuracy: 1.5 dB typ. (2,5 max.) with noise measurement on the nearest adjacent free channel
• Measurement filter bandwidth: 130 KHz at –3 dB
• Measurement stability versus temperature between –10 and 50°C: 0.03 dB/°C
• aBER measurement: up to 1x10–8 (emulated)
• TEST PASS–MARG–FAIL: digital signal evaluation (exclusive ROVER algorithm)
– "C/N NEAR" (with measurement of "N" noise on adjacent channel)
– "C/N FAR" (with measurement of "N" noise on the first free channel) select.and storable
• Multiplex flatness measurement: from 0 to > 20 dB. 1 dB typ. (1.5 max)
COFDM (Demodulated)
(supplied, special for MFN & SFN networks with ECO and PREECO at 0 dB)
• COFDM frequency band: 47–878 MHz
• Direct selection of: memory plan, program, chan, dc at RF IN , freq, with numerical keyboard
• Memorization of: memory plan, prog., channel, dc at RF IN , frequency, number of carriers, channel width, offset–frequency
• Frequency resolution: 62 KHz
• Storable offset frequency: in 62 KHz steps
• Input impedance: 75 ohm
• Interchangeable input connector: "F" or "IEC" or "BNC" ("N" optional)
• Power supply at RF IN: in TV band for preamp.: OFF, +5, +12, +15, +18, +24 V (0.3 A)
• 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
• Power measurement dynamic range at the RF input: from 30 to 126 dBuV, from –30 to + 66 dBmV (selectable) with limit
indications: level too low, level too high
• Power measurement resolution: 0.1 dB