SONY WRR-801A
Service Manual

WRU-801A(AU)

Connections Channel

Setting
The CH indication shows the lowest frequency channel of the selected group. For group 00, however, the channel selected last is displayed. Releasing the buttons automatically cancels the group and channel selection mode, and the currently displayed group is selected.

Take the following precautions to prevent interference and noise. � Do not simultaneously use two or more microphones and transmitters that are set to the same channel. � When simultaneously using two or more tuners, always set the tuners to different channels within the same group (other than group 00). � Separate the reception antennas and the transmitter by more than 3 meters (9 feet 11 inches).

Automatic Search and Setting of Available Channels
When you use the tuner in a multi-channel operation system, you can assign available channels to all tuner units by operating the first tuner unit only.

When using two tuners
When you use two tuners, proceed as follows to ensure that the two tuners do not use the same channel settings.

1 2

3

Press and hold down the SET button, and press the CH button in 3 seconds to select a channel. Similar to step 2, each time you press the CH button, the CH indication changes in the order shown in the group and reception channel list. (See �Wireless Channel Lists� on page 6.) If you press the CH button when the last channel of the selected group is displayed, the first channel of the group will be displayed.

1 2 3

Power off all wireless microphones and transmitters. On the first tuner unit, select the group to be used. Press the SET button on the first tuner unit and hold it down for 3 seconds. The first tuner unit searches for available channels in the selected group. After that, available channels in the group are so assigned to all tuner units automatically that two or more tuner units may not

Follow the procedure explained above to set the group and channel of the first tuner. Power on the wireless microphones or transmitters after adjusting them to the channels of each tuner unit.
Note

1
1
BATT RF
AF BATT

2
GP CH

ON OFF POWER SET
GP CH

If the microphones or transmitters are not powered on, the two tuners may use the same channel twice.

3 4

2,3

3
GP CH GP CH

On the first tuner unit of the second tuner, set the same group as selected on the first tuner. Press the SET button of the first tuner unit on the second tuner and hold it down for 3 seconds. Available channels in the same group (channels not used by the first tuner) are automatically set on the first tuner unit and the other tuner units on the second tuner.

1

Turn the POWER switch on. The message �AS 66� appears on the display, and then the current tuner status is displayed.
Note

use the same channel. After automatic setting, you can adjust the groups and channels of individual tuner units.
Notes

Selecting the reception channel by frequency Press the GP button. This changes the GP/CH indication to a frequency indication. To change a frequency, press the CH button while keeping the SET button pressed. (A higher frequency will be displayed.) Press the GP button again to change the frequency indication to a GP/CH indication.

� Do not use group 00. � If no channels are available, �NO CH� is displayed and channel setting is aborted.

Turn the POWER switch on after reducing the volume of equipment connected to the TUNER OUTPUT connector. Otherwise, noise will be heard when the power is turned on.

Note

If automatic channel setting does not function well for the 2nd tuner (due to poor reception), set channels manually for the 2nd tuner.

2

Press and hold down the SET button, and press the GP button in 3 seconds to select a group. Each time you press the GP button, the GP indication changes as shown in the following figure. To change the indication continuously, press and hold down the GP button.

GP

CH

GP

CH

4
GP CH GP CH

If the desired channel or frequency is displayed, release the SET button and CH button. The selected channel is set.

To store the selected group and channel Leave the indication unchanged for 5 seconds. The group and channel set in the procedure explained above are stored in memory.

12

13

1-7 WRR-801A(AU)