TR-300 SET-UP
HEADSET CONNECTION
Inset the headset/microphone into the connec- tor on the bottom of the unit. See the connec- tion diagram (Figure 5) if headsets other than Telex are used.
TO HEADSET
Figure 24
Connecting Headset
DYNAMIC/ELECTRET SWITCH
If the headset you are using has an electret mi- crophone, the dynamic/electret switch must be in the “E” position. This switch is accessible by removing the belt clip and removing the battery holder. A +5 volt bias is available at the microphone plug for electret use.
If you are using a headset with a dynamic mi- crophone, place the dynamic/electret switch in the “D” position.
NOTE: for proper operation you must match the type of microphone you are using with the dynamic/electret switch located inside the bat- tery compartment.
BATTERY INSTALLATION
Insure that the OFF/ON Volume control knob is turned OFF. Access the battery compart- ment by removing the belt clip on the back of the unit. Release the 1/4 turn fastener located on the back of the belt clip and remove belt clip/cover.
Remove the battery holder from the box. In- sert six (6) AA batteries in the holder, paying close attention to polarities of the batteries. It may be necessary to turn the batteries with the thumb and forefinger the first few times the batteries are inserted into the battery holder to insure good positive contact. Insert the holder into the case and replace the belt clip/battery cover and engage the 1/4 turn fastener.
Figure 26
Battery Installation
NOTE: For maximum uninterrupted service it is suggested that new 1.5 volt alkaline AA bat- teries be installed prior to each use. Avoid “shelf worn” or “economical” batteries. Oper- ation from nickel metal hydride batteries is also permissible. Typical life of fresh alkaline batteries with the
FCC ID: B5DMXXX | CANADA IIIIIIIIIII | ||||
S / N : |
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| MIC | ||
| E |
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| D |
ELECTRET |
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| DYNAMIC | |
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Figure 25
Dynamic/Electret Switch
NOTE: Rechargeable batteries can be charged right in the