Using Vrm [Vrm1/Vrm2], [Jog Dial]; Selecting Vrm#1/Vrm#2 [Vrm1/Vrm2]; Operating Vrm#1/Vrm#2 [Vrm1/Vrm2]; Erasing Vrm#1/Vrm#2 [Vrm1/Vrm2] - JRC JMA-5104 Instruction Manual

3.5.5 Using VRM [VRM1/VRM2], [JOG DIAL]

VRM is a line for measuring a distance to the target that is displayed on the PPI screen.
Since the size of the circle of VRM can be changed freely through [JOG DIAL], a distance to an
arbitrary target can be measured.
This radar can display 2 VRMs (VRM#1 and VRM#2) concurrently.
To display, select, or erase VRM#1/VRM#2, use the [VRM1/VRM2] key.
The VRM status is as follows:
Neither VRM#1 VRM#1 nor VRM#2
VRM#1 VRM#1
VRM#1 is displayed, and VRM#2 VRM#1
VRM#1 VRM#1
VRM#2 VRM#2 is displayed, and VRM#1 VRM#2 VRM#2
Both VRM#1 VRM#1 and VRM#2
VRM#1 VRM#1
Use the following methods to select each state above:
How to operate the [VRM1/VRM2] key
Use the [VRM1/VRM2] key to switch between VRM#1 and VRM#2 and turn ON/OFF
VRM#1/VRM#2.

1. Selecting VRM#1/VRM#2 [VRM1/VRM2]

If neither VRM#1 nor VRM#2 is displayed, VRM#1 or VRM#2 can be selected/displayed by
pressing the [VRM1/VRM2] key.
If both VRM#1 and VRM#2 are displayed, VRM#1 and VRM#2 are selected back and forth by
holding down the [VRM1/VRM2] key.
The currently operable VRM#1/VRM#2 is shown with the VRM value reversed enclosed in
broken lines at the upper right of the screen.

2. Operating VRM#1/VRM#2 [VRM1/VRM2]

The VRM specified in 1 is operable.
After specifying the VRM you want to operate in 1, press [JOG DIAL] several times until the
jog dial mode display at the right bottom of the screen changes to "JOG VRM."
[JOG DIAL] enters the VRM operation mode.
In this status, the VRM can be zoomed in/out.
Turning [JOG DIAL] clockwise "zooms in"
Turning [JOG DIAL] counterclockwise "zooms out"

3. Erasing VRM#1/VRM#2 [VRM1/VRM2]

If both VRM#1 and VRM#2 are displayed, press the [VRM1/VRM2] key to reverse the value of
VRM#1/VRM#2 you want to retain on the screen. In this status, pressing the [VRM1/VRM2]
key erases the non-reversed VRM.
If only VRM#1 or VRM#2 is displayed, press the [VRM1/VRM2] key to reverse the value of
VRM#1/VRM#2. It is enclosed in broken lines.
In this status, pressing the [VRM1/VRM2] key erases the non-reversed VRM.
VRM#2 is displayed.
VRM#2 VRM#2
VRM#2 is not displayed.
VRM#2 VRM#2
VRM#1 is not displayed. VRM#1 VRM#1
VRM#2 are displayed.
VRM#2 VRM#2
"zooms in" the VRM.
"zooms in" "zooms in"
"zooms out" the VRM. "zooms out" "zooms out"
48
"JOG VRM."
"JOG VRM." "JOG VRM."