Raveon RV-M7 Spécifications télécharger pdf (Page 54)

RV-M7 Technical Manual

12.2 Calibration Commands

The following AT commands are used to calibrate the M7. Do not ever change these unless you

have been factory trained to do so.

Command

Command Description

Parameters

Factory

Default

Symbol Peak Deviation – Set the peak FM deviation of the

transmit symbols. Note: This can be a negative number to

invert the modulation.

Range: -1000 – 1000

120**

Select CD pin output signal – CD may be RF carrier detect,

or modem data detect.

Range : 0 - 2

2 = Always assert CD

1 = Data CD

0 = RF CD

Over-The-Air bit rate - This is the data rate the radio uses

to send data over the air. All RF modems in the network

must use the same over-the-air baud rate. Refer to

section 7.6 for information on how to set the OTA baud rate.

Range:

0 = 800 5 = 9600 2L

1 = 1200 6 = 19200 4L

2 = 2400 7 = 5142 2L

3 = 4800 8 = 9600 4L

4 = 8000 4L 9 = 2000 2L

Serial Port time out – Number of mS of no activity on the

serial port before transmitting the data in its buffer.

Range: 1 - 5000

20 (mS)

Preamble length – The number of bytes to send over-the-air

in the pre-amble.

Range: 3 - 255

4**

(Varies based

on data rate

and radio

type. 7 typical)

Frequency Offset. Used to set the radio on the center of the

radio channel.

Range: -500 to +500

0**

Modulation Balance.

Range: 0-100

20**

Select RF CD output threshold – This value is the RSSI

threshold where the carrier detect is asserted. Note: To force

CD always on, set this to 0, and R1 to RF Carrier Detect.

Range : 0-999

300**

12.3 Center Frequency

1. Key the transmitter with CW output using this command:

ATTD 7

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 66 67

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