TM 11-6625-2980-14
Environmental Requirements. The following
paragraphs describe the environmental operating
conditions for the pulse generator.
The pulse generator can be operated where the
ambient temperature is in the range of 0° to +50
0C,
and
can be stored where the temperature range is -40° to
+750 C. After storage at temperatures outside of the
operating range, allow the chassis temperature to
stabilize within the operating limits before applying
power.
Components that require the most cooling are
provided with individual heatsinks. Clearance must be
provided on all sides for air flow. Do not block or restrict
air flow through any holes in the cabinet by placing
objects on or against the pulse generator.
Two thermal cutouts in the pulse generator provide
protection by interrupting power to the unit if the internal
temperature exceeds a safe operating level. Power is
automatically restored when the temperature returns to
a safe level. Operation in confined areas or near heat-
producing equipment may cause the thermal cutouts to
actuate.
The normal operating position of the pulse generator
is horizontal, setting on a flat surface, on the four feet
provided on the bottom surface, or with the front bail
extended, lifting the front panel for ease in reading or
adjusting controls. However, under difficult operating
conditions (such as limited space), the pulse generator
may be used in other positions without impairment of
the electrical characteristics, including setting the
cabinet on the four protective bumpers on the rear
surface or left side. It is important to remember that, in
positions other than normal horizontal position,
characteristics such as cooling and resistance to shock
and vibration are altered, therefore, operation in other
than the normal position should be for short periods only
and with more than normal care exercised to protect the
pulse generator from damage.
Power Requirements. The pulse generator is
designed to be operated from either a 115-volt nominal
or 230-volt nominal line voltage source. In addition, one
of three operating ranges may be selected around each
nominal voltage. The voltage selector jumper in the
power module allows selection of the operating voltage.
Space Requirements. The pulse generator is
provided with feet on the bottom surface to provide
space for cooling air flow, as well as the front bail.
Maintain this clearance by always using the front bail or
setting all four feet solidly on a flat surface. In addition,
always maintain at least two inches of clearance at both
sides, top, and rear of the unit.
1-11
Summary of Contents for PG 508
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Page 51: ... BACKSIDE TRANSITION TIMING BOARD Α3 ...
Page 53: ...HIGH LOW LEVEL LEVEL Trigger Generator PG 508 ...
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Page 93: ...M30603 Change Reference DESCRIP riON LEVEL CONTROL MULTIPLIER Partial ...
Page 100: ...TM 11 6625 2980 14 Figure 1 0 Pulse generator AN USM 359A vi ...
Page 145: ...TM 11 6625 2980 14 POWER MODULE INTERFACE PIN ASSIGNMENTS FRONT VIEW A 15 ...
Page 146: ...TM 11 6625 298014 DETAILED BLOCK DIAGRAM A 16 ...
Page 165: ...TM 11 6625 2980 14 FO 2 Block Diagram 4 3 4 4 blank ...
Page 166: ...TM 11 6625 2980 14 FO 3 Input circuit schematic diagram 4 5 4 6 blank ...
Page 167: ...TM 11 6625 2980 14 FO 4 Period generator schematic diagram 4 7 4 8 blank ...
Page 168: ...TM 11 6625 2980 14 FO 5 Delay generator schematic diagram 4 9 4 10 blank ...
Page 170: ...TM 11 6625 2980 14 FO 7 Transition time generator schematic diagram 4 13 4 14 blank ...
Page 171: ...TM 11 6625 2980 14 FO 8 Level control multiplier schematic diagram 4 15 4 16 blank ...
Page 172: ...TM 11 6625 2980 14 FO 9 Output amplifier schematic diagram 4 17 4 18 blank ...
Page 173: ...TM 11 6625 2980 14 FO 10 Tracking voltage supply schematic diagram 4 19 4 20 blank ...
Page 174: ...TM 11 6625 2980 14 FO 11 PG 508 power supply schematic diagram 4 21 4 22 blank ...
Page 175: ...TM 11 6625 2980 14 FO 12 TM 503 power supply schematic diagram 4 23 4 24 blank ...
Page 176: ...TM 11 6625 2980 14 FO 13 A2 board component locations 5 3 5 4 blank ...
Page 177: ...TM 11 6625 2980 14 FO 14 A3 board component locations 5 5 5 6 blank ...
Page 178: ...TM 11 6625 2980 14 FO 15 A4 board component locations 5 7 5 8 blank ...
Page 179: ...TM 11 6625 2980 14 FO 16 PG 508 exploded view 5 9 5 10 blank ...
Page 180: ...TM 11 6625 2980 14 A 17 A 18 blank ...
Page 181: ...TM 11 6625 2980 14 TM 503 POWER MODULE A 23 A 24 blank ...
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