HYDROMEA Luma X, Manual

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11 LUMA X 3/2022
Note: No change will become effective until the Set button has been pressed. After power-
cycling the modem the parameters will revert to the previous setting. Pressing the Save
button will store the new set of parameters into the LUMA X flash memory and make it the
new permanent set of parameters.
Default Start
State Config
Active The state which the LUMA X will boot into. This is factory-set
to
config , but for normal operation this should be set to
active. The mode will be applied at the next power-up.
Optical speed 1 MHz
2 MHz
4 MHz
6 MHz
8 MHz
10 MHz Speed of the optical link. Note that higher transmit speeds
mean less range. Both sides have to be set to the same
speed.
Number of
active LED
banks 1
2
3
4
5 Number of LED banks used for transmission. Increasing the
number of banks increases the transmission range and power
consumption.
Encoding On
Off Enabling Encoding, improves the link quality at the cost of
throughput
LED transmit
power normal 1% - 100% Power level of LEDs during normal operation. Note: if 2 LUMA
X are very close to each other (less than 50 cm), packet loss
can be reduced by reducing LED power.
LED transmit
power
cooldown 1% - 100% Power level of LEDs during cooldown operation, when the
modem cools down from 55°C to 50°C.
Auto gain
control On
Off The LUMA X will adapt to the ambient light level by changing
the receiver gain. Note: this should be enabled in an
environment which experiences ambient light changes.
Gain value 0-4000 Receiver gain
If
Auto gain control is on , the current gain value is displayed,
but cannot be changed.
If
Auto gain control is off , it is a mutable parameter.
Number of
active receivers 1
2
3
4 The LUMA X modem has 4 receivers and any number of them
can be active.
If
Auto gain control is on , this will be selected automatically
by the LUMA X during active operation, otherwise it is a
settable parameter.
If
Auto gain control is off , it is a mutable parameter.
Autogain
control 0-4000 This is the target value for the auto-gain algorithm. The
factory default value is normally the best choice. In some
situations, this parameter can be adjusted based on a gain