JMA-5300MkIIsm

INDEX > 2.System Configulation > 2.3 Function System Diagram
SLOT ANTENNA
Scanner Unit
NKE-1130
ERROR
MOTOR
B101
MOTOR
DRIVER
PC1501
ROTARY
JOINT
FILTER
ENCODER
ΦA, ΦB,ΦZ
2
MAG
V101
DIODE
LIMITER
PULSE
TRANS
SWITCHING
CIRCUIT
PC201
DUMMY
LOAD
Tune Control
Receiver
Bandwidth
Control
RECEIVER
RF AMP
IF AMP
Tx Trigger/Pulse Width
MH
GENERATOR
VIDEO
AMP
POWER
SUPPLY
CIRCUIT
AVR
INTERFACE CIRCUIT
PC1101
MOTOR RELAY
PC1201
PC 1001
Relay Control
Status
SAFETY SWITCH
S101
Fig.2-4: Function Block Diagram of Scanner unit, Type NKE-1130
Fig.2-3, Fig.2-4 shows the function system diagram for the scanner unit.
When the power supply in the display unit starts, the power supply circuit in the
scanner unit activates and power is supplied to the circuits in the scanner unit.
Once the power supply starts, the CPU in the interface circuit starts and perform
initial settings. Then the preheating of the magnetron begins, and the scanner unit
waits for a communication signal to be sent from the display unit. When it
receives the communication signal from the display unit, a communication link is
established, and the scanner unit is subsequently controlled from the display unit.
While the magnetron is preheating, the interface circuit sets the operation of the
various circuits in the scanner unit according to the initial setting values it receives
from the display unit. When the preheating is complete, the scanner unit notifies
the display unit. When the user performs the operation to start transmission, the
display unit sends the transmission start command via the communication line and
the scanner unit starts the rotation of the antenna motor and begins transmission.
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