7K • Chapter 2
2-2
There may be other occasions when you will need to initialize the controller.
Some examples follow:
• The programming password was never written down, and was forgotten by
the programmer.
• A general erasing of all programming is desired, since the controller is being
transferred to a new repeater and will receive all new programming.
• You are installing a new software upgrade EPROM.
• It has been necessary to replace the battery, RAM IC, RAM controller IC, or
some other part in the non-volatile RAM circuit.
• In this last case, you must perform the initialization sequence twice to
ensure proper operation of the RAM controller IC.
To initialize the controller, follow these four steps:
• Remove power from the controller. This can be done by pulling out the 2.5
mm DC power plug.
• Press and hold down the initialize push-button.
• While holding down the push-button, restore power to the controller. This
can be done by inserting the 2.5 mm DC power plug.
• Continue holding down the push-button for several seconds after the power
has been restored.
Cold Start
An initialization is sometimes called a cold start. When a cold start occurs, the
controller will send ? RES C (reset, cold) in CW.
Warm Start
Applying power without doing an initialization is sometimes called a warm start.
When a warm start occurs, the controller will send ? RES (reset) in CW.
Default Condition
After an initialization, the controller's programming is in the Default Condition.
Default conditions are necessary if you want the controller to be able to operate
the repeater before you’ve had a chance to program it. An initialization can
therefore be though of as a quick pre-programming of the controller. Most
commands have default conditions. They remain in effect until you change
them through programming. The default conditions are described with the
commands in this manual.
Note: There is a push-ON jumper in the main board which is used to
disconnect the battery from the RAM IC. This jumper is removed during some
repair operations, and during current drain tests. Removing this jumper will not
initialize the controller. Removing and replacing the jumper will require an
initialization sequence before proper operation will resume
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