Kongsberg Simrad RA83, Service Manual

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93842105-00
Table-2.3B Check point and Signal (Modulator PCB for 25kW)
Note: Reference value
Repetition period (us) on L pulse: 442-540 (Center: 470)
M2 pulse: 732-986 (Center: 801)
M1 pulse: 1261-1523 (Center: 1338)
S pulse: 1832-2442 (Center: 1998)
Checkpoint Signal Range
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TP1 (MAG C1)
Magnetron current 0 to 8.3 V Width 1.26 us on L pulse
(positive pulse) 0 to 7.2 V Width 0.66 us on M2 pulse
0 to 6.5 V Width 0.35 us on M1 pulse
0 to 6.0 V Width 0.12 us on S pulse
TP2 (PULSE W)
TX pulse gate (after adjust.) 4.8 to 0 V Width 1.13 us on L pulse
(negative pulse) 4.8 to 0 V Width 0.51 us on M2 pulse
4.8 to 0 V Width 0.21 us on M1 pulse
4.8 to 0 V Width 0.055 us on S pulse
TP3 (PWM) Motor power supply switching wave form Duration: 7.155 us
(positive pulse)
STD motor speed 0 to 11.2 V Width 1.92 us
TP4 (TRIG 3) Tuning pulse gate 0 to 4.9 V Width 1.29 us on L pulse
(positive pulse) 0 to 4.9 V Width 0.68 us on M2 pulse
0 to 4.9 V Width 0.37 us on M1 pulse
0 to 4.9 V Width 0.13 us on S pulse
TP5 (40V-R) Return of Motor power supply 0.01 Vdc
TP6 (TRIG 2) TX pulse gate 0 to 4.9 V Width 1.22 us on L pulse
(positive pulse) 0 to 4.9 V Width 0.61 us on M2 pulse
0 to 4.9 V Width 0.31 us on M1 pulse
0 to 4.9 V Width 0.15 us on S pulse
TP7 (TRIG 1)
Trigger for Processor 0 to 4.9 V Width 1.02 us on ALL pulse
(positive pulse)
TP8 (HT CONT)
Magnetron heater voltage control 4.4 Vdc on ST’BY
2.7 Vdc on L pulse
3.1 Vdc on M2 pulse
3.3 Vdc on M1 pulse
3.9 Vdc on S pulse
TP9 (MAG C2)
Magnetron 2.1 Vdc on L pulse
1.6 Vdc on M2 pulse
1.3 Vdc on M1 pulse
0.66 Vdc on S pulse
TP10 (GND)
Ground 0 Vdc
TP11 (V/TRIG) Video+ trigger Trigger: 0 to 4.7 V Width 1.3 us
Video: 0.2 to -3.3 V Main bang echo:
(Width 1.59 us)
Delay 2.36 us from trigger rise edge
TP12 (PM TUNE) Tune voltage for performance monitor 0 – 10 Vdc
J1-1 (+24V) +24V
24.3 Vdc
J1-3 (+12V) +12V 12.5 Vdc
J1-5 (DAT)
Interface data 4.97 to 0.56 / 0.73 V (Burst pulse)
J1-7 (BP/SHF) HM Azimuth: 2.8 to 4.8 V on 25 rpm
On Duty factor per 1.172 ms Width 0.685 ms:
HM: 2.8 to 0.66 V Width 0.482 ms 1 pulse/round
J1-9 (V/TRG) Video+ trigger Trigger: 0 to 4.7 V Width 1.3 us
Video: 0.2 to -3.3 V Main bang echo (Width 1.59 us)
Delay 2.36 us from the trigger rise edge
J2-1 (+250V) +250V
250 Vdc
J2-4,5-6,7 Motor supply voltage 38.5 Vdc