JRC JMR-5482-S - Adjusting a Performance Monitor of a Magnetron Radar (NKE-2255)

Section 14 Adjusting and Setting up Equipment (for Services) 14-8
14.2.3.3 Adjusting a performance monitor of a magnetron radar
(NKE-2255)
Use the [Performance Monitor] dialogue.
Perform the following adjustments based on the transmitting/receiving attenuator value as the
reference.
Memo
•
[PM Sector] (monitor sector) influences both the transmission monitor and the reception
monitor.
• Do not change the value set in the [PM TI Sector] (transmission sector in monitoring) input box.
• Do not change the values set in
the [TX Monitor Timing] (transmission monitor timing
adjustment value) input box and the [RX Monitor Timing] (reception monitor timing adjustment
value) input box.
• Adjust the direction of orientation before adjusting the monitor level.
Adjusting a monitor reception level
Adjust the circuit for monitoring the radar equipment reception performance.
1 Select the [PM Sector] tab, and adjust a value so that the maximum value will be
displayed in [RX Level] for the [Start Angle] (starting angle) and [End Angle] (ending
angle).
When changing the PM Sector, take care about the following two items.
• Sector width : Maintain Start Angle – End Angle = +10 degrees or -350 degrees.
• Estimated Start Angle : +350 degrees to +20 degrees. (Heading direction)
2 Click on the [RX Monitor Adjustment] (reception monitor adjustment) input box.
A numeric value input keyboard is displayed.
3 Input a setting value in the input box so that a value of [0.0±1.0 dB] will be displayed in
[RX Level] (received signal attenuation value). (0 to 127)
Adjusting a monitor transmission level
Adjust the circuit for monitoring the radar equipment transmission performance.
1 Select the [PM Sector] tab. ([Start Angle] and [End Angle] is already adjusted at
adjusting a RX Level.)
2 Click on the [TX Monitor Adjustment] (transmission monitor adjustment) input box.
A numeric value input keyboard is displayed.
3 Input a setting value in the input box so that a value of [0.0±1.0 dB] will be displayed
in[TX Level] (transmitted signal attenuation value). (0 to 127)