Paradyne DMD15L operation manual Demodulator Menu Options and Parameters

User InterfacesDMD15/DMD15L IBS/IDR Satellite Modem

4.3.3 Demodulator Menu Options and Parameters

Mode:	{IDR, IBS, Closed Net, Drop & Insert}
	Used with IDR, or IBS Interface Only.
	The Mode Command sets a number of parameters
	within the modem to meet a set specification. The
	purpose is to eliminate keystrokes and potential
	compatibility problems. Additionally, data rates not
	covered by the given mode of operation will not be
	allowed. If the mode of operation is selected after the
	data rate has been entered, then the data rate must be
	compatible with the desired mode of operation or the
	mode will not be allowed. The following parameters are
	set for the given mode of operation and cannot be
	changed while the unit is in the given mode of operation:

IDR Mode:
(IESS-308)
For Data rates 1.544, 2.048, 6.312, 8.448 Mbps
Framing Type:	96 Kbps (IDR)
Descrambler type:	V.35
Spectrum Mask:	Intelsat
For Data Rates < 1.544 Mbps
Framing Type:	1/15 (IBS)
Descrambler Type:	IESS-309
Spectrum Mask:	Intelsat

	IBS Mode:
	(IESS-309)
	For Data Rates < 2.048 Mbps
	Framing Type:	1/15 (IBS)
	Descrambler Type:	IESS-309
	Spectrum Mask:	Intelsat
	Closed Net:
	All possible combinations allowed
	Drop & Insert:
	Data Rates:	n x 64, n = 1, 2, 3, 4, 5, 6, 8, 10,
		12, 15, 16, 20, 24, 30
	Framing Type:	1/15 (IBS)
	Descrambler Type:	IESS-309
	Spectrum Mask:	Intelsat
Strap Code:	{Refer to Strap Code Guide, Section 4.3, Table 4-4}
	The Strap Code is a quick set key that sets many

modem parameters. Consult the strap code guide for available strap codes. Parameters set by strap code:

Data Rate

Code Rate

Mode

Frame Type

Scrambler Type

Spectrum Mask

4-8 TM051 – Rev. 5.8