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A.4.6 optional message arguments, A.4.7 end of packet – Comtech EF Data CDM-740 User Manual

Page 118

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CDM-740 Advanced Satellite Modem

Revision 0

Remote Control

MN-CDM740

A–4


(ASCII Code 126)

The

∼ code is only used as follows:

If a message was sent via a local modem to a distant end device or ODU, the
message was transmitted transparently through the local modem. In the event of
the distant-end device not responding, the local modem would generate a
response. Example: 0001/RET~, indicating that it had finished waiting for a
response and was now ready for further comms.

A.4.6 Optional Message Arguments

Arguments are not required for all messages. Arguments are ASCII codes for the characters 0 to 9
(ASCII codes 48 to 57); period (ASCII code 46); and comma (ASCII code 44).

A.4.7 End of Packet

Controller-to-Target: This is the 'Carriage Return' character (ASCII code 13).

Target-to-Controller: This is the two-character sequence 'Carriage Return' (ASCII code 13), and
'Line Feed' (ASCII code 10).

Both indicate the valid termination of a packet.