Chapter 6 Troubleshooting And Product Specifications; Troubleshooting - FrontRow 940H User Manual

6

troubleshooting

Microphone will not turn on
• Check batteries are installed correctly
• Batteries may be dead. Test with alternate
batteries and recharge or replace if necessary
• Verify charger is working
Static/crackling noises
• Verify you are not blocking microphone
emitters
• Verify no other transmitter is transmitting
on Channel B
Batteries will not hold a charge
• Replace batteries with fresh "silver sleeve",
auto-sensing batteries
Product Specifications
940H Student Microphone
Transmitting frequency: 2.8MHz
Transmission type: Infrared
Frequency response: 50Hz to 16kHz
Operating range: 40ft (12m)
User controls: On/Off
Batteries: 1 NiMH rechargeable battery
Size: 9.5 x 2.25 x 2.25 in. (24 x 5.5 x 5.5 cm)
Weight: 11oz (312g)
940C Microphone Charger
Power supply: AC power supply (9.0V/1.0A max.)
Indicator lights: Red = charging
Green = fully charged
Dimensions: 7.5 x 3.5 x 3.25 in (19 x 9 x 8.5 cm)
Weight: 6 oz (170g)
AC Power Supply
Type: Switching power supply
Input: 100-240V ~ 50-60Hz, 400mA
Output: 9.0V/1.0A max.
Weight: 4.0oz (114g)
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