TM 1-1520-238-10 4-71 Table 4-22. Electronic Module Switch Functions Switch Function SALVO COUNT Programs the number of salvos: 1, 2, 4, 8, or C (continuous). A salvo is the same as one burst. SALVO INTERVAL Programs the time in seconds between salvos: 1, 2, 3, 4, 5, 8, or R (random timing, e.g. 2, 5, 3, 4, 3, 2). BURST COUNT Programs the number of chaff cartridges that are fired in one burst: 1, 2, 3, 4, 6, or 8. BURST INTERVAL Programs the time interval in tenths of a second between individual chaff cartridge firings within a burst: 0.1, 0.2, 0.3, or 0.4. 4.36.6 Kit Safety Procedures. The following special safety procedures shall be followed: WARNING Avoid exposure to high concentrations of chaff; this can cause temporary irrita- tion to eyes and throat. a. Chaff and impulse cartridges. Chaff and im- pulse cartridges shall be kept away from all fires and ex- cessively high temperatures. b. Impulse cartridges. Impulse cartridges must be handled with extreme care. Each cartridge generates ex- tremely high gas pressure and temperature when fired. c. Safety pin. The safety pin shall be installed in the remote safety switch whenever the helicopter is parked. Remove the safety pin prior to takeoff. 4.36.7 Kit Operation. CAUTION Operation is totally independent of air- craft ARM/SAFE power. NOTE When power is removed from the dispenser assembly, the firing order resets to position No. 1 in the payload module. If payload module is partially expended, the payload module may be rotated 180 prior to power up to ensure an unexpended chamber is in the No. 1 position. 1. Chaff counter – Set for number of chaff car- tridges in payload module. 2. Mode switch – MAN. CAUTION Mode switch should always be in the MAN position prior to setting the ARM/ SAFE switch to ARM to prevent immedi- ate salvo of chaff. 3. ARM/SAFE switch – ARM; ARM indicator light on. 4. Mode switch – PGRM – if desired or required. 5. Cyclic WAS – C (6:00 position) as desired to fire chaff. 6. Stopping Procedure – ARM/SAFE switch – SAFE. 4.37 RADAR WARNING SYSTEM AN/APR-39(V)1. The radar warning (RW) system provides visual and aural warnings of radar reception in bands generally associated with hostile fire control radar. Each radial strobe displayed on the RW display represents a line of bearing to an active radar transmission. When a radar signal represents a threat an audio signal is sent to the RW control panel and an audio alarm is sounded in the pilots helmet. The audio alarm frequency represents the relative strength of the in- tercepted radar signals. Also during radar signal threats, the RW display missile alert (MA) lamp is illuminated. The MA lamp flashes to represent the relative strength of the intercepted radar signals. The operating controls and indi- cators of the RW control panel (fig 4-20) are described in table 4-23.