User manual AUDIO TELEX AT60-3

[. . . ] Both amplifie6 incorporate a 6 zone 100 volt line sfraker zone selector with all call. The A, T60 will deliver 60 watts into a load of g otrms, ZO or 100 volt line. The AT120 will deliver 120 watts into a load of . l or 8 ohms. [. . . ] This LED will glow red if the amplifier is operating into an excessive load or ifone or mor of the input channels is supplving an unacceptably high level ofsignal. It is normal for this LED to flicker on and off howwer. the amplifier will shul down for a period of approximately 3 seconds and continue to cycle in this fashion until the abnormal connection is removed or rectified. This is a featue of the amplifier designed to protect the amplifier circuitry ald the speaken connected to the output. Limit LED: Powef Button: ThiE switch controls the swilching of AC power to the amplifier. Rocking this switch upwards turns on AC power to the amplifier while rockhg the switch downwards turns power off to the amplifier. When in the upard positio4 the red neon in the body of the switch will glow. Rear Panel Connections i-i 'r I, 1r'1'r po1'ori -r_-T r - 3 Pin IEC ilains Power Inlet: * the operating voltage is 240 VAC @ 50Hz or lloVAC@60H2. The AC power voltage level is not extemally user adjustable but is factory pre-set. The intet is equippea with an inhilt AC fus holder fitted with a 4 amp ftse (ATl20) or a 2 amp fuse (AT60) plus a spare for each found within the holder. Fower conslmption is 225VA for the ATl20 and l25VA for the 4T60. Please ensure that the mains prower cord is dhconnected before attempting to chck or rplace this fuse. fnese screw terminals allow access to the direct outpurs of rhe amplifier. 2 spare screw terminals allow for the connection ofvarious tone module accessories. Reading from left to right the terminals are- z. Direct Output Terminal Strip: o o Low Impedance Common 4 Ohms (Not aYailable on AT60) Constant Voltage Common T0 Volt Line . 8Ohms . o o l@ Volt Line Spare Spare at any time on maximum load no less than 170 Ohns for the 4T60. Note: The minimum impedance for 100 Volt line shoutd be no less than E0 Ohrns for the AT120 and 3. neaalng from left to right these screw terminal pairs correspond to the switched 100 volt line outputs numbercd 6 through I as indicated on the front panel of the rmplifier. For each pat, the left hand terminal is the common and the right hand terminal is the 100 volt output Switched Outputs Terminal Strip: 4. Tape Output: RCA style phono output connector for line level output. Provides a maximum of 350mV into 10K Ohms, ideal for a connection to most standard tape recorders. This outFut is sourced before the master gain control and as such, the tape output level is not inlluenced by the operation of the master gain control. s. [. . . ] This intemally mounred PCB is asily fitted and plugs dircctly into a socket provided on the intemal circuit board PCB6I9E. Please follow the inslructions supplied with the tone generator. When any tone from the ATC5488 is acti ted all inputs will automatically mute Tones available on the ATC5488 tone generator board are: Evacuation Tone (to Australian Standard L5222O. 1. 2) Alert Tone (to Australian Standard A52220. 1. 2) Bell Tone Pre Announce Chime TX3010 Vox tuting Module. channel I When installed (as per the comprehensive instructions supplied with the of the ampl. ifier will mute channels 2, 3 & 4 of the amplifier. 19" rack mount fi3010), ATR KBLK. kit Fuse Sizes ATI 20 Amplifier tains 240 VAC: 4 Ampercs Slow Blow Fuse Sizes AT60 Amplifier tains 240 VAC: z Ampres Slow Blow Notes The DC fts is located on the circuit board. [. . . ]