User manual AKG PR 40

[. . . ] However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: · Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Shielded cables and I/O cords must be used for this equipment to comply with the relevant FCC regulations. Changes or modifications not expressly approved in writing by AKG Acoustics may void the user's authority to operate this equipment. [. . . ] The volume control (3) lets you adjust the volume level of the headphone output. The output jack is wired as follows: Tip: line output (fixed level) Ring: headphone output (adjustable) Sleeve: ground Important: To avoid overloading the headphone amplifier, do not connect headphones with an impedance lower than 16 to the headphone output. RF LED: Indicates the field strength of the received signal: LED lighting green: optimum field strength. LED lighting red: field strength is zero (the transmitter is OFF or the receiver has been set to a different channel than the transmitter) or the received signal is muted because the squelch is engaged. LED does not light: power to the receiver is OFF, no batteries are in the battery compartment, or the batteries are dead. AF LED: Indicates the received audio level: LED lighting green and flashing red on peaks: optimum audio level. LED does not illuminate on switching the power ON: no or dead batteries in the battery compartment. Antennas: Being a diversity receiver, the PR 40 uses two antennas to receive the transmitter signals at two different spots. 5 V dry batteries or rechargeable batteries of the same size (not supplied). 2) ¸ Charging contacts for charging rechargeable batteries inside the battery compartment using the optional CU 40 charger. 1 Powering To power the PR 40 portable receiver you can use the supplied 1. Pull the battery compartment lid (1) down to remove it from the receiver. If you do, the batteries will not be held in place securely and may cause a rattling noise. If there are dead or defective batteries inside the battery compartment, remove the batteries. Insert the supplied or new batteries (2) into the battery compartment as shown in fig. If the batteries are in good condition, the BATT LED (4) will light green. If the BATT LED (4) illuminates red, the batteries will be dead within about 60 minutes. Slide the battery compartment lid (1) onto the receiver against the direction of the arrow to the point that the lid (1) will click shut. [. . . ] Use the volume control (3) to set the desired volume level for the headphones. 9) For optimum reception, point each antenna away from the receiver at an angle of 45 degrees. With the antennas aligned like this, the diversity function will operate optimally Fig. 9: Optimum antenna alignment and prevent disturbances such as noise or dropouts most efficiently. [. . . ]