User's Manual

C1 March 2010
Broadcast Transmissions ..................................................................................................................... 33
The Address Mask ............................................................................................................................... 33
Addressing Examples: ......................................................................................................................... 34
6.6. Error Correction ........................................................................................................................... 35
6.7. Store-and-Forward Repeating ..................................................................................................... 36
7. Using the M7 Modem – Streaming Mode .................................................... 39
7.1. Streaming Mode Operation .......................................................................................................... 39
7.2. Baud Rate Selection .................................................................................................................... 39
7.3. Bit Errors ...................................................................................................................................... 40
7.4. Carrier Detect .............................................................................................................................. 40
7.5. Serial Data Flow Control .............................................................................................................. 40
8. Installation ................................................................................................... 42
9. FCC Licensing Information .......................................................................... 42
9.1. Setting the Over-The-Air Data Rate ............................................................................................. 44
9.2. Debug Related Commands .......................................................................................................... 45
10. M7 Diagnostic Provisions ......................................................................... 46
10.1. Overview of Diagnostics .............................................................................................................. 46
10.2. Reading the Diagnostic Information ............................................................................................. 46
10.3. Status and Statistics Command ................................................................................................... 46
10.4. ATST Command .......................................................................................................................... 48
10.5. ATST2 Command ........................................................................................................................ 48
10.6. ATST3 Command ........................................................................................................................ 49
10.7. ATST4 Command ........................................................................................................................ 49
10.8. AutoStatus ................................................................................................................................... 49
11. Tune-up and Alignment ............................................................................ 51
11.1. Periodic Calibration ...................................................................................................................... 51
11.2. Center Frequency ........................................................................................................................ 51
11.3. TX Deviation ................................................................................................................................ 51
11.4. TX Modulation Balance ................................................................................................................ 52
11.5. RX Carrier Detect......................................................................................................................... 52
12. SkyLine Compatibility ............................................................................... 54
12.1. General ........................................................................................................................................ 54
12.2. Configuring M7 to Communicate with a SkyLine ......................................................................... 54
13. Antenna Information ................................................................................. 54
14. Appendix A. Serial Port Hardware .......................................................... 56
14.1. Serial Port Data and Handshaking Signals .................................................................................. 56
14.2. Null modem without handshaking ............................................................................................ 58
14.3. Compatibility issues ................................................................................................................. 58
14.4. Null modem with full handshaking ........................................................................................... 59
14.5. Compatibility issues ................................................................................................................. 59
15. Troubleshooting ........................................................................................ 60
Symptom: Unit will not receive ............................................................................................................ 60
Symptom: Unit will not transmit ........................................................................................................... 60
Symptom: Receive light blinks, but no data is received ...................................................................... 60
Symptom: Long delay before transmitting ........................................................................................... 61
Symptom: Cannot enter Command Mode ........................................................................................... 61
Symptom: Modem appears dead. ....................................................................................................... 61
Symptom: Repeater will not repeat. .................................................................................................... 61
16. Mechanical ............................................................................................... 62