Comtech EF Data Vipersat CDD-564L Spezifikationen PDF herunterladen (Seite 139)

CDD-562L/564 Demodulator with IP Module Revision 1

Appendix D MN/CDD564L.IOM

D–3

D.3.4 Command Structure

Controller-to-Target

Start of

Packet

Target

Address

Delimiter

Instruction

Code

Row Index

(Optional)

Code

Qualifier

Optional

Arguments

End of Packet

ASCII code 60

(1 character)

1-4 characters /

ASCII code 47

(1 character)

(3 characters)

1-3 characters

contained with

‘[‘ ‘]’ brackets

= or ?

ASCII codes

61 or 63

(1 character)

(n characters)

Carriage Return

and Line Feed

ASCII codes 13

and 10

[0x0D, 0x0A]

(2 characters)

Examples: <0135/TFQ=1949.2345{CR}

<1/rte[1]= rt1|239.022.033.044.32|1|***************|0011|0|0|0|0|3

Target-to-Controller

Start of

Packet

Target

Address

Delimiter

Instruction

Code

Qualifier

Optional

Arguments

End of Packet

ASCII code 62

(1 character)

(4 characters)

ASCII code 47

(1 character)

(3 characters)

=, ?, !, *,#, or ~

ASCII codes

61,63,33,42, 35,

or 126

(1 character)

(From 0 to n

characters)

Carriage Return,

Line Feed

ASCII codes

13,10

(2 characters)

Examples: >0654/RSW=32{CR}{LF}

<RTE[4]?

>0001/rte[4]=rt4|239.022.033.044.32|1|***************|0011|0|0|0|0|3

D.3.4.1 Start of Packet

Controller-to-Target: This is the character '<' (ASCII code 60).

Target-to-Controller: This is the character '>' (ASCII code 62).

Because this is used to provide a reliable indication of the start of packet, these two characters

may not appear anywhere else within the body of the message. For multi line text message, each

line should end with a new line character ‘\n’. The carriage return & new line [\r\n] combination

should present only at the end of the message.

D.3.4.2 Target Address

Up to 9,999 devices can be uniquely addressed. Even though the any number of devices can be

addressed, but they all should be associated with single IP Address.

• For a CDM-570, address of ‘1’ is being used to address both modulator and

demodulator.

• For CDD-564, each demodulator is identified by unique address from 1 to 4

respectively for all the four demodulators.

The address is not significant for commands targeted system wide. But, it does has significance

when associated with demod specific commands like Frequency, data rate etc.

1 2 ... 134 135 136 137 138 139 140 141 142 143 144 ... 171 172

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