SWM7000 2.4 GHz Wireless Microphone Systems Application and Troubleshooting Guide Table of Contents 1. DROPOUTS 2 2. RF INTERFERENCE 5 3. SOUND QUALITY 7 4. BATTERY CHARGING SYSTEM 8 5. RECEIVERS 8 6. TRANSMITTERS 9 7. SABINE REMOTE SOFTWARE 9 8. UPGRADING RECEIVER FIRMWARE AND REMOTE CONTROL SOFTWARE 11 9. DIP SWITCHES 12 10.
1. Dropouts 1.1. What causes dropouts? Wireless microphone systems are vulnerable to dropouts, (momentary loss of audio) and it is often difficult to pinpoint the exact cause of the problem. Dropouts can be caused by improper antenna positioning, defective antenna cabling, a problem with the transmitter, a problem with the receiver, a problem with the sound system. Interference with other RF sources almost never causes dropouts but it can cause sputtering and ticking in the audio.
1.4.3. Antenna placement It is imperative that you orient the receiver antennas so that if one has a weak signal, the other will likely have a strong signal. Here is one way to do it. Orient the left antenna so that it points to 10:00 and the right antenna so that it points to 2:00. Placing the dipole antennas parallel to each other (for example, both sticking straight up) defeats diversity and causes dropouts. 1.4.4. Line of Sight RF signals will not go through metal objects and thick walls.
extension antennas should be in a good pickup position at all times but separated by about ten or fifteen feet if the antennas are within 100 or so feet. If you put the antennas too far apart, i.e., at opposite ends of the room, or in separate rooms, to improve coverage, diversity is defeated and you will get dropouts. In other words, diversity is more important than coverage. 1.4.10.
1.4.15. We have successfully solved dropout problems using this technique in a very large hall using 77 meter cable runs. Please note that high-gain extension antennas are required to overcome the loss of the splitter and please note that you must preserve diversity. The splitter we recommend can be found here: http://www.hyperlinktech.com/web/signal_splitters_2400_2way.php 1.4.16. You can also daisy-chain two antennas on one cable length by moving the splitter from the ADA to the first antenna. 1.4.17.
is another 2.4 GHz source in the room, clumping the channels reduces the chances of an overlap. 2.6. Many hotels, i.e., Hilton & Hampton Inn are now providing WLAN throughout their facilities so that customers can log on to the internet from anywhere in the hotel. These LANs, at least in the US, are restricted above our channel 10 and below our channel 53. This is just one more reason that our customers should clump the channels together at channels 70, 69, 68... on down to 54 and from Channels 1, 2,.
Shifting Receivers (Requires firmware version 2.88 or higher, and software version 2.23 or higher) • Use the software to make the change in the receivers.
3.5. RF is Strong But There Is No Audio Output 3.5.1. If there is no output with several transmitters, the problem is mostly with the receiver. If your receiver is showing audio input in the LCD window, check your output level on the front panel. Current versions of the receiver show the maximum output level as +10 and mute as ---. Older versions show mute as -00. 3.6. If the system still does not sound good with all of the functions turned off, call Sabine at 386 418 2000. 4. Battery Charging System 4.1.
6. Transmitter 6.1. The switch is programmable to guard against users with nervous fingers. Refer to the Internal Control of External Switch on page 14 of the manual to see how this switch may be set to “On/Off,” On/Mute,” or “On/On.” 6.2.
7.7. If you are using the USB cable make sure you choose USB Connection as you are clicking through the software prompts. 7.8. Here is how to check to see if the USB is connected properly:: • Connect the receiver to the PC with a USB cable; make sure the receiver is on. • In Windows, go to Control Panel, Systems, Hardware, Device Manager, and click on ‘Universal Serial Bus controllers’. • If the receiver is connected properly, ‘Sabine SWM7000-USB is Ready’ will be listed.
to do the following: Connect your receiver to your computer using the USB connection. You should see a Windows display indicating a USB device has been found. Click on the display and you should get a Windows Wizard asking to install this new device. Follow the on-screen instructions. When you are prompted to choose the location of the driver, choose browse. Your driver will be in the Windows/System32 directory on your computer. Choose that directory. This should successfully install the driver.
9. Dip Switches Default positions are down. Conditions below engage when the switches are up. DIP1 = Squelch Defeat DIP2 = Channel A phase invert DIP3 = MIC/GUI Level Change Defeat DIP4 = Digital Output Clock Source (up = external) DIP5 = Lock 1 (locks all front panel functions) DIP6 = Lock 2 (locks functions selected in software) DIP7 = Networking Master/Slave Select (up = slave) DIP8 = Channel B phase invert 10. Customer Service.
