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Specifications
Transmitter frequency: 1750 Hz
Maximum transmitter voltage: 2500 mW into 1 kohm
Case dimensions: 28" x 12.6" x 4.1" (711mm x 321mm x 104mm), 5.7 lb (2.6 kg)
Transmitter dimensions: 10.4" x 6.7" x 2.3" (263mm x 171mm x 59mm), 2.6 lb (1.2 kg)
Receiver dimension: 26.1" x 10.1" x 3.5" (664mm x 257mm x 88mm), .75 lb (.3 kg)
Headset sound pressure level: 96±3 dBA SPL max (when used with Tempo supplied headset)
Transmitter battery: 6 x D cells (alkaline recommended), typical life, 50 hours
Automatic shut off: 3 hours
Receiver battery: 4 x AA cells (alkaline recommended), typical life, 50 hours.
Automatic shut off: 1.5 hours
Maintenance
Electric shock hazard:
Contact with live circuits could result in severe injury or death.
• Before opening the battery cover, remove the test leads from the circuit and shut off the unit.
Failure to observe this warning could result in severe injury or death.
Battery Replacement
1. Turn off the unit.
2. Disconnect any leads.
3. Remove the battery cover (see figure 7)
4. Replace the batteries (observing the
polarity indications).
5. Replace the battery cover.
Recycle the old cells.
Cleaning
When necessary, wipe with a cloth dampened with mild aqueous detergent
solution only. Do not use abrasives or solvents. Dry before use.
Tempo Communications
11
Figure 7. Battery Replacement
521E Instruction Manual
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