AN241
www.hoperf.com
Copyright © By HOPERF
V0.4 | Page 34/41
No.
Function
Description
1
Frequency band
Display the selected frequency band as shown in the figure above. It indicates that the
start frequency of the selected frequency band is 865000kHz.
2
Modulation/
demodulation mode
Display the selected modulation/demodulation mode, as shown in the figure above,
indicating that the current modulation and demodulation mode is set to 2FSK.
3
Tx and Rx mode
Display the current Rx and Tx mode, TR indicates transmitting and receiving
alternative mode.
4
Chanel signal
Display the channel signal (value of Frequencry Channel) as shown in the figure
above, the channel signal is 0. Therefore, both of the operating frequency and starting
frequency is 865MHz.
5
Data rate/offset
parameter
Display the currently set data rate/frequency offset parameters. As shown in the figure
above, it indicates that the current setting rate is 20kbps and the frequency offset is +/ -
10khz.
6
Tx and Rx packet
counter
“
rx : xxxxx
”
indicates the receive packet numbers
（
passed by CRC
）；
7
Signal strength
Display the returned signal strength in dBm.
8
Operation guide
The corresponding K1~K5 operation guide is shown in the figure above
：
Short press K2(
)
，
return to the upper menu.
Note
：
1. In passive receiving mode, when a packet is received and passed the CRC, LED2 and LED3 will be on
and then off. If the received packet does not pass the CRC, only LED3 is lit up and then turned off.
2. In passive receiving mode, if a packet is received and passed CRC, the receiving counter is increased by
1 and the display is updated. After the received packet is returned, LED1 will be lit up and turned off after
finishing the continuously returning of the received packet. Therefore, during the ping-pong test of the
evaluation, LED1, LED2, and LED3 will flash rhythmly.
3. In passive receiving mode, packets are not compared and must be sent back if passes CRC. Since the
receiving counter and the sending counter have the same value, so only the receiving counter is displayed.
4. Combined with active transmitting mode, there will be three count value after completing two tests, which
are respectively the active transmitting count, passive receiving count and the returned packet count (that
is, the returned count which is derived from the active transmitting terminal). These three values can
analyze whether the bidirectional communication is in balance. In the symmetric case, the packet loss
probability is similar regardless of upstream or downstream. In the case of asymmetry (for example, there
is interference at one end of the attachment), there must be a high probability of one side packet loss.
4 Supplymentary
4.1 Firmware Update Burning Operation
CMT2310A-EB firmware upgrade (HC32L136 main control software update) can be performed via J-Flash.
The following describes how to upgrade the firmware:
1. Start the J-flash software. Take J-Flash V6.30d as an example, as shown in Figure 4-1. Click on "File" in
