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MULTI-FUNCTION MICROPHONE WITH DTMF
MC-57DM/58DM
SERVICE MANUAL
MC-57DM
SPECIFICATIONS
Type
Power requirement
Current drain
Dimensions (WxHxD)
2 9/16 x 3 17/32 x 1 3/16 inches
Weight
Sensitivity
Electret capacitor
8.0 V DC ±10 %
35 mA or less
65 x 90 x 30 mm
Approx. 180 g/ 6.3 oz
–52 ±3 dB (at 1 kHz)
(0 dB = 1 V/Pa)
©
2002-2 PRINTED IN JAPAN
B51-8625-00 (S) 789
MC-58DM
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Summary of Contents for Kenwood MC-57DM
- Page 1 MULTI-FUNCTION MICROPHONE WITH DTMF MC-57DM/58DM SERVICE MANUAL © 2002-2 PRINTED IN JAPAN B51-8625-00 (S) 789 MC-58DM MC-57DM SPECIFICATIONS Type Electret capacitor Power requirement 8.0 V DC ±10 % Current drain 35 mA or less 65 x 90 x 30 mm...
- Page 2 MC-57DM/58DM CONNECTOR END VIEW MC-57DM MC-58DM Moduler plug (8P) METAL plug (8P) ADJUSTMENT Item Condition Test equipment/Measurement Adjustment Specifications/Remarks c nkey at DTMF 2.4mV ±0.01mV output level same time push ∗ When you change the R10 from 820Ω to 1.8kΩ, the microphone sensitivity increases approximately 6dB.
- Page 4 13, Boulevard Ney, 75018 Paris, France Sales Marketing Division KENWOOD ELECTRONICS U.K. LIMITED 1 Ang Mo Kio Street 63, Singapore 569110 KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB United Kingdom KENWOOD ELECTRONICS EUROPE B.V. Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands...
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