JVC TDR6 Dclock, Dmlock, Ebno, Lnb, MOD QPSK, 8PSK, 16QAM Qpsk, Offset, Rawber

TDR6 Remote Command Listing (continued)

Mnemonics		Parameters/	DVB Defaults	Description
		Response Values
DMD.x		Where x is A, B, C, or D	—	Combined with additional mnemonics, specifies the
		and designates the		demodulator that is the object of the command.
		demodulator to be		For example, if RF output B is currently active, the DMD.B
		configured or queried.		DMLOCK command displays the current lock status of
				demodulator B.
				By itself, queries all parameters of specified
				demodulator.When DMD.x is entered, the TDR6 returns the
				following information for the designated channel: Eb/No,
				locked status for the decoder and demodulator, offset,
				modulation type, LO frequency, RF frequency, data rate,
				symbol rate, code rate, LNB power, and rolloff setting.
				Commands for all demodulator ports are the same.
				Front panel equivalent: None
DMD.x	BER	—	—	Query-only; displays the bit error rate; this value represents
				the number of errors detected in the signal after error
				correction is applied. This rate should be a zero for correct
				performance.
DMD.x	CR	1/2, 2/3, 3/4, 5/6, 7/8, 8/9	5/6	Sets the Viterbi code rate for the designated demodulator.
				Front panel equivalent:
				Details>Input>Config>Demod>RF>Code Rate
DMD.x	DCLOCK	locked, unlocked	—	Query-only; displays the locked status of the decoder to the
				incoming signal.
				Front panel equivalent: Details>Input Status>Decoder
DMD.x	DMLOCK	locked, unlocked	—	Query-only; displays the locked status of the demodulator
				to the incoming signal.
				Front panel equivalent: Details>Input>Status>Demod
DMD.x	DR	1000000 to 100000000	8448000	Sets the value for the incoming demodulated data rate for
		bps		the designated demodulator.
				Front panel equivalent:
				Details>Input>Config>Demod>RF>Data Rate
DMD.x	EBNO	-99 to 99 dB	—	Query-only; displays the energy per bit over the noise ratio
				of the signal after Viterbi decoding and before Reed-
				Solomon decoding for the designated demodulator.
				Front panel equivalent: Details>Input>Status>Eb/No
DMD.x	LNB	OFF, 13V, 18V	Off	Sets the output DC voltage to power the antenna’s low
				noise block amp and defines polarization for the designated
				demodulator.
				Front panel equivalent:
				Details>Input>Config>Demod>RF>LNB Power
DMD.x	LO	0 to 15000 MHz	10000	Sets an internal representation of the local oscillator
				frequency of the external down converter for the designated
				demodulator.
				Front panel equivalent:
				Details>Input>Config>Demod>RF>LO Frequency
DMD.x	MOD	QPSK, 8PSK, 16QAM	QPSK	Sets the modulation type for the decoder.
				Front panel equivalent:
				Details>Input>Config>Demod>RF>Modulation
DMD.x	OFFSET	—	—	Query-only; displays the difference between the frequency
				set by the user and the frequency actually locked onto.
				Front panel equivalent: None
DMD.x	RAWBER	—	—	Query-only; displays the raw bit error rate; this rate is the
				error rate of the signal as it is received from the satellite,
				before error correction is applied.

40 01-0870-401B 01/03 Using a Remote Unit