Instruction manual

ACU-1000 Operations Manual
Interoperability Now 2-63
The Auto-ID feature is set up by first browsing to the CPM-4. This is usually done by entering
the IP address of the module in the browser’s URL window. The user then selects the Module
Identifiers link.
The Module Identifier page shows a list of 24 modules, one for each possible slot in an ACU
system. Any slot where a DSP module is not installed or otherwise cannot be used to generate
Auto-ID will have a grayed-out Preview button. In the CPM Module Identifier Page screen
shot only modules 1, 7 and 12 are “active.” Modules 1 and 12 also have call signs already
configured.
Each module has a text entry window for the user to enter alphanumeric text for the call sign.
Only letters A through Z and digits 0 through 9 are accepted as call-sign text.
After the user has entered the call-sign information for each applicable module, the Save
Changes button is used to commit the data to permanent memory. There is also a Clear
Changes button that will automatically clear out any pending user changes to call-sign data.
Each module has a Preview button. This is used to preview the call-sign announcement on the
ACU HSP module speaker. This does not play the call-sign prompt over the air.
The Auto Ident Rate pull-down selection allows the user to select Auto-ID times of 5, 10, 15,
30, or 60 minutes. Selecting OFF will disable the Auto-ID feature. The Auto Ident Rate is the
time the system will wait, following the activation of PTT, before it will automatically
broadcast the call-sign announcement.
There are two mutually exclusive selections titled ID with PTT and ID when Idle. Assume the
Auto Ident Rate is set for 5 minutes. When the DSP module first asserts its PTT output, the
timer begins. After 5 minutes, the module is eligible to transmit the call-sign announcement.
If the ID when Idle option is selected, the ACU will announce the call sign when the timer
elapses as long as there are no COR or PTT conditions currently present on the module (the
module is not receiving or transmitting). The prompt is transmitted once, and the timer does not
start counting again until the next active PTT session for the module. If an active PTT or COR
condition is present when the timer elapses, the call sign prompt is transmitted as soon as the
condition ends.
If ID with PTT is selected, the feature never creates a PTT condition on its own, but instead
sends out the call sign only at the end of a transmission that’s caused elsewhere within the
ACU system. That is, the unit will not send out the call sign as soon as the timer elapses but
will wait until the next PTT occurs following the elapsed time, and transmit the call-sign
prompt as soon as PTT is deactivated. The timer is restarted and the prompt will be transmitted
again following the first PTT after the timer again expires.
There is a Broadcast ID to Net Members box on the Module Identifiers screen. Typically, call-
sign announcements are only transmitted to the radio connected to the DSP-2 module. When
Broadcast to Net Members is selected, the call-sign announcement is instead transmitted by all
modules currently in the same “interoperability net” as the DSP-2 or DSP-3.