JRC JCY-1800 Installation Manual page 38

2. Installation Procedures
JCY-1800/1850 VDR/S-VDR Installation Guide
2.2.7. Switching Radar
When two radars are connected and VDR record one of two radar images by switching.
1) In case of JRC Radar
The following radars output a PJRC sentence which includes a status of transmitting RF signal.
When main radar is transmitting, main radar image is recorded. When main radar is not transmitting, sub radar image
is recorded.
Connect a serial output data from Radar unit to the RCU.
Model
JMA-5300
JMA-9900
JMA-900
Other old model
Outputting sentence of the Radar unit
$PJRC, RA, 15, ?, xxxxxxxxxx*hh<CR><LF>
2) In case of switching signal by dry-contacts
In order to switch by dry-contacts, it is necessary to set the logic of dry- contact (Open/Close) for radar selection
(Auto selection/Main/sub)
E.g.） Setup Table
PI_1
OPEN
OPEN
CLOSE
CLOSE
3) In case of none switching signal by dry-contact
Radar image in CH input image signal is recorded.
When radar images are input to both of CH, CH1 image is recorded.
DOC No. 7ZPJD0387C
PJRC
Support
Support
Support
Not support
? = 1: transmitting RF
0: not transmitting RF
PI_2
OPEN
CLOSE
OPEN
CLOSE
28
Remark
Ver. 2.0.8 or later
MODE
AUTO
CH1 record
CH2 record
－
PI_1
PI_2