Filter
Top Products
3-16
3.2 Checking Magnetron Heater Voltage
Magnetron heater voltage is formed on the MD (1824C-BB), PTU (1834C-BB) or RTB
(1934C-BB/1944C-BB/1954C-BB/1964C-BB) Board of the antenna unit, and preadjusted at
the factory. Therefore, no adjustment is required. However, check magnetron heater voltage
for confirmation as shown below. This procedure should only be performed by a
qualified technician.
1. Open the antenna unit.
2. Turn on the power. Do not transmit the radar.
3. Connect a multimeter, set to 10VDC range, appropriate position on the MD (1824C-BB),
PTU (1834C-BB) or RTB (1934C-BB/1944C-BB/1954C-BB/1964C-BB) Board in the
antenna unit. Refer to the table in below.
4. Confirm that the multimeter indication is within the ratings shown below.
MODEL1824C-BB MODEL1834C-BB MODEL1934C-BB/
1944C-BB/1954C-BB/
1964C-BB
Check point
TP804#6 (+) and #4
(-) on MD Board
TP802#4 (+) and #6 (-)
on PTU Board
J825#4 and #6 (GND) on
RTB Board
Multimeter
indication
7.9 to 8.1 V 7.4 to 7.6 V 7.4 to 7.6 V
Adjustment point VR801 on MD Board R106 on PTU Board VR801 on MD Board