Instructions Manual

6. CONNECTION AND INSTALLATION
6.1 MECHANICAL INSTALLATION
NOVUS Air is designed to be integrated to NOVUS Automation Inc. products for industrial applications, which have
their own enclosure. A distance of 20 cm shall be maintained between the antenna and users, and the transmitter
module may not be co-located with any other transmitter or antenna
6.2 ELECTRICAL INSTALLATION
NOVUS Air has power supply connectors and supports the Universal Asynchronous Receiver/Transmitter (UART)
interface, which allows interaction with the host microcontroller. Pin map is presented in Figure 3, while more detailed
description of pin functionalities is provided in Table 2.
7. AT COMMANDS
NOVUS air supports the Universal Asynchronous Receiver/Transmitter (UART) interface. A set of AT commands to
control and configure wireless communication is already implemented in the embedded firmware, guaranteeing that all
data will be treated as input by the IEEE 802.15.4 application firmware.
The default configuration for accessing the UART interface of novus Air is mentioned below:
• Baud rate: 115200
• Data: 8 bit
• Parity: None
• Stop bit: 2 bit
• Flow control: None
The list of all implemented AT commands is available as an appendix of this document.
To apply each configuration, you need to send the commands in the sequence: at + pibconfstore and at + armreset.
Check that each command gives an OK confirmation. If not, repeat the command.
8. POWER LEVEL
The transceiver power level can be set by the AT command “at+ PLEVEL=<>”. Possible Transceiver Power Level
values are <4, 3, 2, 1, 0, -1 , -2, -3, -4, -6, -8, -12 or -17> in dbm.
PA can be enabled by sending the command “at+PASTATE1”, what provides a +20 dBm gain. The maximum
Transmission Power of the module is 20 dBm, what implies that when PA is enabled the transceiver power level is
limited to a maximum of 0 dBm by the firmware.
Note on RF Output Power Setting: In order to comply with FCC requirements, the NOVUS AIr module has the
following power shaping requirements implemented:
• Limit to power level -8 when PA is active (plevel= -8 and PASTATE1) for channels 25 with channel 26 being
disabled.
9. POWER CONSUMPTION
The following table presents current consumption (in Amperes) related to different power levels. PLEVEL is the
selected transceiver power level, while Plevel is the power level of the device. The 20 dBm summed between PLEVEL
and Plevel is due to the 20 dBm gain of the on-board PA.
Table 4: Power consumption with PA enabled
PLEVEL
Plevel
PTX (A)
RX (A)
0
20
0,135
0,01542
-1
19
0,127
0,01542
-2
18
0,118
0,01542
-3
17
0,104
0,01542