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D.5.2 tx parameters – Comtech EF Data CDM-625 User Manual

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CDM-625 Advanced Satellite Modem

Revision 15

Appendix D

MN-CDM625

D–10

D.5.2

Tx Parameters

Priority System: TIT (Highest priority) , TFM, TFT, TMD, TCR, TDR, and TSR (Lowest Priority), indicated by shading. Any change to a higher

priority parameter can override any of the parameters of lower priority.

Exception – Select DROP, D&I++, QDI or Framed QDI mode using TFM (Transmit Framing type), which is highest priority.

Parameter

Type

Command

(Instruction

& Qualifier)

Number of

Arguments

Description of Arguments

Response to

Command

Query

(Instruction &

Qualifier)

Response to

Query

Tx Interface

Type

TIT=

1 byte, value

of 0 thru 9, or

A

Command or Query.

Tx Interface Type, where:

0=RS422

1=V.35

2= reserved – do not use.

3=Balanced G.703

4=Unbalanced G.703

5=Audio (Data rate fixed at 64 kbps) (IBS/EDMAC only)

6=LVDS

7=HSSI

8=IP

9=ASI

A=IP-ACM (Unframed, EDMACs only)

Example: TIT=1 (selects V.35)

TIT=

TIT?

TIT*

TIT#

TIT?

TIT=x

(see Description of

Arguments)

Tx Framing

Mode

TFM=

1 byte, value

of 0 thru 9, A

Command or Query.

Tx Framing mode, where:

0=Unframed

1=IBS

2=IDR

3=D&I - DROP (requires D&I FAST option)

4=EDMAC

5=D&I++ (requires D&I FAST option)

6=ESC++

7=EDMAC-2

8=Quad Drop & Insert (requires QDI FAST option)

(G.703 Balanced, E1-CCS only)

9=Framed QDI (requires QDI FAST option)

(G.703 Balanced, E1-CCS only)

A=EDMAC-3

Example: TFM=0 (selects Unframed mode)

TFM=

TFM?

TFM*

TFM#

TFM?

TFM=x

(see Description of

Arguments)