TeachLogic LLC |
541 Main St, Suite B, Longmont CO 80501 |
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760-631-7800 |
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[email protected] | teachlogic.com
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If an Android device was connected and another paired device subsequently becomes connected, then
after the second device disconnects, the Android device can reconnect if the panel is put into pairing
mode again.
By contrast, if an Apple device was previously paired, and subsequently another device pairs and
connects, then after the second device disconnects, the Apple device will not reconnect. The user needs
to put the panel in BT pairing mode, forget the panel BTR in Apple’s Bluetooth settings, then re-pair and
connect to the Apple iOS device.
To disconnect a device from the panel, press the BT button for 3-4 seconds until the BT Stop icon blinks
once. This will1) disconnect the connected device, and 2) allow pairing and/or connection by other
devices (including the one disconnected). The first one to connect will lock out others while connected.
CLASSROOM STRATEGY FOR SECURING BLUETOOTH CONNECTIONS
To prevent persons other than the teacher from connecting to the classroom audio system, namely
students acting contrary to a teacher’s wishes, TeachLogic recommends the following.
1. Maintain control of access to the control panel. If anyone can press the BT button, they can
pair their smartphone or other Bluetooth device to it.
2. Once you put the panel into pairing mode, immediately connect (or pair and connect) your
(teacher’s) Bluetooth device. This will keep it from being available to any previously paired
device. If you do not pair, then power cycle the system using a long press of Mute button to
power off, then another long press of it to power back on. Then the system will not be in pairing
mode, advertising its Bluetooth identity. (Note that previously paired devices may still connect if
no other device is connected to it.)
3. If you identify an unauthorized, undesired party that has paired with the audio system, require
their device “forget” the TeachLogic system Bluetooth pairing identity. And please note that the
BTR will remember the most recently connected device and try to connect with it, so pair and
connect your (teacher’s) device to override this. Having a device forget the BTR may be as
simple as clicking on “forget device” on an unauthorized Apple device. With Android devices, the
owner must first “forget device” then “rescan” to clear the pairing information from memory. If
theirs was the last device connected, the BTR will actively try to reestablish connection and the
unauthorized owner will need to decline to connect when prompted so that the Android device
“forgets” the pairing.
4. Finally, if you have problems with unauthorized connections, then when you are not using the
system to play audio from your desired Bluetooth-connected device, keep that BT input channel
muted. To do this, press the BT button, then the Mute button. This will keep the Bluetooth audio
signal level at zero so if anyone else is connected, they may not send any sounds to the
classroom speakers. Do this also if you ever hear audio from your classroom speakers that is
from a device you do not intend have connected.
Additional Functions of release 3.4 for detection of RS-232 connection issues
Sometimes, RS-232 communication can be disrupted between the control panel (CPS-120/CPS-121) and
the amplifier (IMA-120/IMA-121). If this condition persists for a minute or more, the control panel will
display the message “Amplifier Offline.” This is a feature in release 3.4 and later, and the release number
is shown on the display shortly after connecting the control panel to power via the RJ-45 connectorized
cable.
