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©2011 Broadcast Electronics
SAFETY PRECAUTIONS
PLEASE READ AND OBSERVE ALL SAFETY PRECAUTIONS!!
ALL PERSONS WHO WORK WITH OR ARE EXPOSED TO POWER TUBES, POWER TRANSISTORS, OR
EQUIPMENT WHICH UTILIZES SUCH DEVICES MUST TAKE PRECAUTIONS TO PROTECT THEMSELVES
AGAINST POSSIBLE SERIOUS BODILY INJURY. EXERCISE EXTREME CARE AROUND SUCH PRODUCTS.
UNINFORMED OR CARELESS OPERATION OF THESE DEVICES CAN RESULT IN POOR PERFORMANCE,
DAMAGE TO THE DEVICE OR PROPERTY, SERIOUS BODILY INJURY, AND POSSIBLY DEATH.
DANGEROUS HAZARDS EXIST IN THE OPERATION OF POWER TUBES AND POWER
TRANSISTORS -
The operation of power tubes and power transistors involves one or more of the following hazards,
any one of which, in the absence of safe operating practices and precautions, could result in serious
harm to personnel.
A. HIGH VOLTAGE - Normal operating voltages can be deadly. Additional information follows.
B. RF RADIATION - Exposure to RF radiation may cause serious bodily injury possibly resulting
in Blindness or death. Cardiac pacemakers may be affected. Additional information
follows.
C. HOT SURFACES - Surfaces of air-cooled radiators and other parts of tubes can reach
temperatures of several hundred degrees centigrade and cause serious burns if touched.
Additional information follows.
D. RF BURNS - Circuit boards with RF power transistors contain high RF potentials. Do not
operate an RF power module with the cover removed.
Summary of Contents for Marti Electronics ME-40
Page 10: ...viii 2011 Broadcast Electronics...
Page 15: ...5 2011 Broadcast Electronics...
Page 23: ...13 2011 Broadcast Electronics...
Page 36: ...26 2011 Broadcast Electronics FIGURE 5 1 POWER SUPPLY SIMPLIFIED SCHEMATIC DIAGRAM...
Page 39: ...29 2011 Broadcast Electronics Figure 5 3 PARALLEL LOAD CONNCTIONS...
Page 44: ...34 2011 Broadcast Electronics FIGURE 5 4 NO PA VOLTAGE TO THE RF AMPLIFIER...
Page 47: ...37 2011 Broadcast Electronics FIGURE 5 5 MODULATED OSCILLATOR SIMPLIFIED...
Page 59: ...49 2011 Broadcast Electronics TABLE 5 6 FREQUENCY SYNTHESIZER PROGRAMMING...
Page 62: ...52 2011 Broadcast Electronics FIGURE 5 8 NO RF OUTPUT LOCK IS EXTINGUISHED...
Page 66: ...56 2011 Broadcast Electronics FIGURE 5 10 RF Amplifier SIMPLIFIED SCHEMATIC...
Page 72: ...62 2011 Broadcast Electronics Figure 5 11 RF Amplifier Circuit Board Controls...
Page 74: ...64 2011 Broadcast Electronics This page intentionally left blank...
Page 91: ...BOM LEVEL PART NO DESCRIPTION QTY REF DES 81 2011 Broadcast Electronics 7 SCHEMATICS...
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