SA
TM 1-1520-253-10
AB0332
SA
Figure 3-8. Status Screen Flow
INDICATION FUNCTION
DTM Displays status of DTM. READY indicates module in place and functional. NOT HAWK Module installed, but wrong format. FAIL Module inoperative. NOT PRESENT Module not installed in receptacle.
SAVE AS MSN Shows mission name which will be used for the cartridge header on the next save.
LOAD Commands the start of transferring mission data from the cartridge to the CDU.
LOAD-FILLS Loads the DTM data .lls for the AN/ARC-201Ds, AN/ARC-220 and IDM initialization.
3.4.3.7.2 System Status.
NOTE
Status of Doppler and GPS will .ucutate
from GOOD to FAIL if the magnetic varia-
tion is set to 0. This is normal and does not indicate a failed or degraded system.
System status screen is accessed by pressing the STS .xed function button (Figure 3-8). The status of each sub-
system is displayed as either G (GOOD) or F (FAIL). If a subsystem has changed status since this screen was last exited, the status is displayed in inverse video and the STS annunciator on the CDU keyboard is lit. KY-100, IDM and COM-5 status .eld will be blank if equipment is not in-stalled. K following a COM signi.es that crypto is con.g-ured. K will always follow COM-1 and COM-4 if a good status is received since the crypto is embedded in those radios. Press ACK to acknowledge present status, change text to normal video and extinguish STS annunciator. Ac-knowledgment is system wide (both CDUs).
3.4.3.7.3 Radio Offline Status. Bus failures, CDU fail-ures, system zeroizing and emergency panel use will cause radios to go offline. After restoration of the failed system, allow 30 seconds for radios to return to online status, and then check all radios for proper frequency, band and mode settings.
3-14 Change 3
Section II COMMUNICATIONS
3.5 Communications System Control (CSC) Panel.
The CSC panel provide audio interface and control for the communication radios, navigation radios, and intercommu-nication within the helicopter. Pilot’s, copilot’s, and crewchief stations continuously monitor ASE, IFF, radar altimeter and master warning tones. Hands free intercom-munication is provided by hot mike and voice activated (VOX) features. An exterior jack is provided to the front of the main landing gear shock struts. When the walkaround cord is connected to it, the crewchief can communicate with the interior of the helicopter or with the other exterior jack through the medic’s ICS stations. Pilot and copilot CSC panels are located on the lower console (Figure 2-4). Medic 1 CSC is located near the left cabin window. Medic 2 CSC located in cabin overhead. Crewchief’s CSC is lo-cated by the right cabin window. Power for the system is provided by the 28 vdc essential bus through circuit break-ers, marked PLT ICS, CPLT ICS and ICS CABIN.
3.5.1 CSC Controls and Functions. Controls for the intercom/radios are on the front panel (Figure 3-9). The function of each control is as follows:
CONTROL FUNCTION
VOL Control Knob Master volume control adjusts all RADIO MON and NAV volume levels simultaneously.
RADIO MON Push to turn on and pull to turn off; rotate to adjust individual audio level.
1 Controls audio reception level for VHF/FM 1 radio.
2 Controls audio reception level for UHF radio.
3 Controls audio reception level for VHF/AM-FM radio.
4 Controls audio reception level for VHF/FM 2 radio.
5 Controls audio reception level for HF radio.
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