LED Outputs
Status LED¶
The status LED (STATUS_LED) indicates the status of TiMo module. The LED indicator pin is a 3.3V output pin capable of sourcing 20mA. An appropriate current limiting resistor must be connected in series with the LED.
Status¶
Constant off (0V): Not linked to any transmitter
Flashing: off (0V) 100 ms / on (VDD) 100 ms: linked to a transmitter,
but no active radio link
Flashing: off (0V) 900 ms / on (VDD) 100 ms: Active radio link, no DMX
present
Constant on (VDD): Active radio link, DMX data present
Linked¶
The Linked LED (LINKED) indicates whether the CRMXchip is linked to a transmitter or if it is available to be linked. High level (3.3V) on this pin indicates a linked state; low level (0V) indicates that the CRMXchip is not linked.
RF Link¶
Receiver¶
A high level (3.3V) on the RF Link LED output (RF_LINK) indicates that CRMXchip is within range from the transmitter it is linked to and that an active radio link from the transmitter is present.
DMX LED¶
The DMX LED (DMX_LED) indicates if a valid DMX stream is received. A high level (3.3V) indicates that DMX is present, a low level (0V) indicates that no valid DMX is present.
Radio level¶
CRMXchip has 5 output signals for controlling radio level LEDs in the form of a bar graph (RDI_LVL0 - RDI_LVL4). Operation of these, and suggestion of LED colors, can be found in the table below. These are only used for receivers.
| Signal name | Suggested LED color | On when signal quality |
|---|---|---|
| RDI_LVL0 | Red | below 10% |
| RDI_LVL1 | Amber / Yellow | above 20% |
| RDI_LVL2 | Green | above 40% |
| RDI_LVL3 | Green | above 60% |
| RDI_LVL4 | Green | above 80% |