(2)
PL1 Ultrasonic Test Set
Dukane Corporation
2900 Dukane Drive
St. Charles, IL 60174
ú
31-31-02
ALL ú ú 04 Page 208 ú May 28/01
A
757
MAINTENANCE MANUAL
(3)
PL3 Ultrasonic Test Set
Dukane Corporation
2900 Dukane Drive
St. Charles, IL 60174
(4)
ATS-260 Acoustic Test Set
Datasonics INC.
1400 Route 28A
Cataumet, MA 02534
B. Procedure
S 712-012
(1) If you have a 42A12C test set, do this test of the ULB:
(a)
Put the test set approximately 3 feet from the ULB.
(b)
Set the ON-OFF-GAIN control on the test set to the middle position. 1) Make sure you hear sounds through the earphone on the test
set.
(c)
Set the TUNING CONTROL to 37|1 kHZ.
(d)
Set the INPUT SELECTOR switch to the INT position.
(e)
Make sure the test set operates correctly.
1) Shake a set of keys or some coins in front of the microphone to make sure it operates.
NOTE: This will supply ultrasonic sound.
____
a) Make sure you hear sounds through the test set earphone.
(f) Use any kind of tape to attach a piece of flexible metal conductor to the ULB case and the center of the water switch.
NOTE: This will make a short circuit from the center of
____ the water switch to the outer part of the ULB.
1) Make sure you hear a pulsed tone at 1-second intervals.
(g)
Remove the flexible metal conductor from the ULB case and center of the water switch. 1) Make sure you do not hear a pulsed tone.
(h)
Set the ON-OFF-GAIN control switch to the OFF position.
S 712-013
(2) If you have a PL1 test set, do this test of the ULB:
(a) Use tape to attach a piece of flexible metal conductor to the ULB case and the center of the water switch.
NOTE: This will make a short circuit from the center of
____ the water switch to the outer part of the ULB.
ú
31-31-02
ALL ú ú 05 Page 209 ú May 28/01
A
757 MAINTENANCE MANUAL
(b)
Put the end of the test set against the ULB, approximately one inch from the water switch.
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：757 AMM 飛機維護手冊 儀表 CHAPTER 31 - INSTRUMENTS 1(110)
