TM 1-1510-224-10
(a)
TOP. Selects upper antenna.
(b)
DIV. Selects diverse (both) antennas.
(c)
BOT. Selects lower antenna.
(4)
RAD TEST-OUT switch. Enables reply to
TEST mode interrogations from test set.
(5)
MASTER control. Selects system operating
mode.
(a)
OFF. Deactivates system.
(b)
STBY. Activates system warm-up
(standby) mode.
(c)
NORM. Activates normal operating
mode.
(d)
EMER. Transmits emergency reply
code.
(6)
STATUS ANT indicator. Illuminates to
indicate the BIT or MON fault is caused by high VSWR in
antenna.
(7)
STATUS KIT. Illuminates to indicate the
BIT or MON fault is caused by external computer.
(8)
STATUS ALT indicator. Illuminates to
indicate the BIT or MON fault is caused by the altitude
digitizer.
(9)
IDENT - MIC - OUT. Selects source of
aircraft identification signal.
(a)
IDENT. Activates transmission of
identification pulse (IP).
(b)
MIC. Enables either control wheel
POS IDENT switch to activate transmission of ident signal
from transponder.
(c)
OUT. Disallows outgoing signal.
(10)
MODE 4 reply indicator light. Illuminates to
indicate a reply has been made to a valid Mode 4
interrogation.
(11)
MODE 4 AUDIO OUT switch. Selects
monitor mode for mode 4 operation.
(a)
AUDIO. Enables sound and sight
monitoring of mode 4 operation.
1. TEST-GO Indicator
2. TEST/MON. NO GO Indicator
3. ANTenna Switch
4. RAD TEST-OUT Switch
5. MASTER Control
6. STATUS ANT Indicator
7. STATUS KIT Indicator
8. STATUS ALT Indicator
9. IDENT MIC-OUT Switch
10. MODE 4 REPLY Indicator
II. MODE 4 AUDIO-LIGHT-OUT Switch
12. MODE 3/A Code Selectors
13. MODE 2 Code Selectors
14. MODE 1 Code Selectors
15. MODE 4 TEST-ON-OUT Switch
16. MODE 4 Code Selector
17. M-C TEST Switch
18. M-3/A TEST Switch
19. M-2 TEST' Switch
20. M-1 TEST Switch
A93FE00D112 C
Figure 3-34. Transponder Control Panel
3-88
