Maxim Integrated 73M1822/73M1922 Modem CTL Application - Manual (Page 18)

73M1822/73M1922 Modem CTL Application User Guide UG_1x22_056
18 Rev. 1.0
2.10 Loopback Management
There are six different loopback mode can be set internally by the driver. Using the loopback command
the user can disable the loopback, query the loopback status, or enable one of the following loopback
modes:
1. Digital loopback – 1
2. Internal loopback – 1
3. Digital loopback – 2
4. Internal loopback – 2
5. Analog loopback
2.10.1 Loopback Set Command
This command enables one of the loopback modes.
Syntax
1X22CTL:NN> loopback set [digital1|internal1|digital2|internal2|analog]
Where: NN Shows the current active channel ID.
2.10.2 Loopback Clear Command
This command disables the loopback.
Syntax
1X22CTL:NN> loopback clear
Where: NN Shows the current active channel ID.
2.10.3 Loopback Get Command
The command displays the active loopback mode.
Syntax
1X22CTL:NN> loopback get
Where: NN Shows the current active channel ID.
The following is a log of the loopback commands.
Figure 17: Loopback Command Logging Session
Modem CTL:00> loopback set analog
Modem CTL:00> loopback get
Active loopback: Analog
Modem CTL:00> loopback clear
Enable analog loopback.
Display current active
loopback session.
Disable loopback.