CM1481 Datasheet, PDF (9/24 Pages) ON Semiconductor – 2-Channel EMI Filter with ESD Protection for Headsets/Speakers

Configuration ......
Configuration Instructions
The CM1481 is configured using a PC running simple CM1481 menu-driven software via the Configuration
Interface Connector between the PC Printer Port (LPT1) and the CM1481 Connector (J1).
Using the menu, configuration parameters are defined in the PC and then written to the module.
When configured the module will retain these parameters until re-configured by either: (a) Over-Air
Re-Configuration, or (b) complete PC repeat configuration. A power supply of the relevant value is introduced via
the Configuration Interface Connector for module power during configuration (see Table 3).
The previous page details the construction and connections of the Configuration Interface Connector and
shows an example screen of the DEFAULT software menu.
Preparation and Configuration
1. With no power applied connect the CM1481 (J1) to the PC Printer Port (LPT1) via the configuration
Interface Connector.
2. Start the computer.
- CM1481 Configuration software will run under MS DOS versions: 3.2, 3.3, 4.01, and 5.0 -
3. With the CM1481 Configuration program disk inserted in the floppy drive, type : <(Drive): CM1481.EXE>
4. The CM1481 Configuration Main Menu will be displayed.
Follow the initial instructions.
5. Provide power to the module via the Configuration Interface Connector.
6. With reference to the function keys at the bottom edge of the screen ---
<EXIT> Exits the Configuration program and returns the user to the DOS prompt.
<EDIT> Enters ‘Configuration-Edit’ mode to change parameter/function set-ups.
<UP, DOWN> Moves a highlighting cursor to the required parameter.
<LEFT, RIGHT> Decreases or increases the chosen parameter value.
<CHANGE ADDRESS> When the cursor is placed within an address field, the <CHANGE
ADDRESS> function may be activated; this will allow the address to be entered as one entity.
<EXIT to PREVIOUS SCREEN> Returns to the previous screen.
<LOAD> loads a previously saved set-up file.
<SAVE> saves the current set-up file.
<READ> reads the set-up information from the module.
<WRITE> writes the selected set-up file to the module. This will overwrite any resident information.
<VERIFY> A comparison of the screen setup and the written setup.
<REVISION> reads the current firmware (CM1481 on-board software status) from module.
7. When the <WRITE> command is completed powerdown the module.
With power removed from the radio, reconnect the Radio Interface.
8. To configure another CM1481 module, remove the power from the module.
Remove the current module from the Configuration Interface Connector.
Connect the new module and continue from Step 5 (above).
9. CONFIGURATION COMPLETE.
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