User's Manual
SATELLINE-4Pro
User Guide v0.93 DRAFT
71
16.2.1 Transmission delays when the radio TX frequency is changed
If the modem’s transmitter frequency (TX) is different than the receiver frequency (RX),
there has to be at least 40 ms delay from the Receive Data (RD) to Transmit Data (TD).
If the transmitter frequency is changed by an SL-command, there has to be at least 40
ms delay after the SL-command before the Transmit Data.
If the transmitter frequency is changed from TX1 to TX2 by an SL-command during the
transmission, there has to be at least 40 ms delay after the SL-command before the
Transmit Data.
16.2.2 Transmission delays when using a 12.5 kHz radio channel
Transmission delays without FEC-function (Forward Error Correction).
Number of bytes sent
Bps 1 10
100
500
1200 40 40
29
22
4800 34 34
31
22
9600 32 32
32
27
19200 32 35
64
193
38400 32 36
91
352
Delays are in milliseconds and with a 10% margin.
0
50
100
150
200
250
300
350
110100500
Delay / ms
Number of Bytes
12.5 kHz radio channel without error correction
1200
4800
9600
19200
38400