Furuno 42a12d Manuales De Servicio
03-TM-0038 REV 00 PAGE 1 of 5
SECTION I
GENERAL INFORMATION
1.1. INTRODUCTION
1.1.1. GENERAL. This manual contains the description,
operation and maintenance of the 42A12D Ultrasonic Test
Set manufactured by Dukane Corporation, Seacom Division,
2900 Dukane Drive, St. Charles, Illinois 60174. See Figure
1.1.
operation and maintenance of the 42A12D Ultrasonic Test
Set manufactured by Dukane Corporation, Seacom Division,
2900 Dukane Drive, St. Charles, Illinois 60174. See Figure
1.1.
1.1.2. SYMBOLS AND ABBREVIATIONS. All symbols
and abbreviations used in this manual are in accordance with
the ANSI Y14.15 and MIL-STD-12, respectively.
and abbreviations used in this manual are in accordance with
the ANSI Y14.15 and MIL-STD-12, respectively.
1.2. GENERAL DESCRIPTION
1.2.1. FUNCTION. The 42A12D is a battery operated het-
erodyne type receiver tunable over the ultrasonic frequency
range of 30 to 45 kHz. The test set was designed primarily
as a self-contained, hand-held functional tester for testing
underwater acoustic beacons. Utilizing the internal micro-
phone and loudspeaker, the Test Set can perform an opera-
tional test on a beacon without removing the beacon from its
mount on the aircraft.
erodyne type receiver tunable over the ultrasonic frequency
range of 30 to 45 kHz. The test set was designed primarily
as a self-contained, hand-held functional tester for testing
underwater acoustic beacons. Utilizing the internal micro-
phone and loudspeaker, the Test Set can perform an opera-
tional test on a beacon without removing the beacon from its
mount on the aircraft.
1.2.2. SPECIFICATIONS. The specifications for the
42A12D are given in Table 1.1.
42A12D are given in Table 1.1.
TABLE 1.1. SPECIFICATIONS 42A12D
ULTRASONIC TEST SET
Size.......................................3.0" (7.62 cm) x 4.5"
(11.43 cm) x 2.25" (5.72 cm)
Weight...............................13 ounces (368 grams)
Tuning Range....................................30 to 45 kHz
Battery*................................................9V (Qty 1)
Gain.................................87 dB min. at 37.5 k Hz
Noise.............................Less than one mW across
10 ohm load
Undistorted Output........................... 250 mW into
. 10 ohm load
Microphone Sensitivity.................-150dB re 1uPa
Battery Life......................................30 to 40 hours
Audio Output Jack........................Switchcraft type
43A, permits operation
into headphones, oscilloscope,
etc. in place of internal
loudspeaker (impedance
10 ohm nominal)
* NEDA Type 1604A.
(11.43 cm) x 2.25" (5.72 cm)
Weight...............................13 ounces (368 grams)
Tuning Range....................................30 to 45 kHz
Battery*................................................9V (Qty 1)
Gain.................................87 dB min. at 37.5 k Hz
Noise.............................Less than one mW across
10 ohm load
Undistorted Output........................... 250 mW into
. 10 ohm load
Microphone Sensitivity.................-150dB re 1uPa
Battery Life......................................30 to 40 hours
Audio Output Jack........................Switchcraft type
43A, permits operation
into headphones, oscilloscope,
etc. in place of internal
loudspeaker (impedance
10 ohm nominal)
* NEDA Type 1604A.
Figure 1.1. Ultrasonic Test Set Model 42A12D.