Furuno FAR-2107 Series Service Manual page 338

4.16 Sub Monitor
4.16.1 Connection to "Slave"
The TB board has [J617] and [J618] ports for the sub monitor. Each of these ports has
merits and demerits as shown in the Table below. Select a port appropriate for your
intended use.
1. Selection of connecting ports
Port Output signal
Full log*
(Video signal
J617
with GAIN and
(SLAVE 1)
STC not
controlled,
Semi-log*
(Video signal
J618
with GAIN and
(SLAVE 2)
STC controlled
by main radar)
* The jumper setting on the SPU board can switch Full-log and Semi-log.
DVI-D Monitor
+12V
J615
RPU-013
(TB p.c.b)
J616: Master
OP HD-IN, OP BP-IN, OP VIDEO-IN, OP TRIG-IN
J618: DISP-2
(SEMI LOG)
OP HD-2, OP BP-2, OP VIDEO-2, OP TRIG-2
J617: DISP-1
(FULL LOG)
OP HD-1, OP BP-1, OP VIDEO-1, OP TRIG-1
Fig. 4.16.1 Sub Monitor Connecting Port
Sensitivity and
operation
Overall
sensitivity
GAIN
adjustment
STC
Overall
sensitivity
GAIN adjustmen
STC adjustmen
R VIDEO
G VIDEO
For VDR
B VIDEO
H SYNC
V SYNC
+5V, -12V
J617: DISP-1
(FULL LOG)
RPU-013
J618: DISP-2
(TB p.c.b)
(SEMI LOG)
Radar
Table 4.16.1 Features of Sub Monitor Ports
Type of sub monitor
FAR-2XX7 series
Lower sensitivity Lower sensitivity (-8 dB) than that
(-8 dB) than that of of main radar even after adjusting
main radar the input video level to 4 Vp-p
Adjustment with Adjustment with the knob is
the knob is disabled enabled.
Adjustment with Adjustment with the knob is
the knob is disabled enabled.
Despite the same sensitivity as for
Same sensitivity as
the main radar, the video level is
for main radar
low. (Approximately 2 V)
Adjustment with Adjustment with the knob is
the knob is disabled Enabled.
Adjustment with Adjustment with the knob is
the knob is disabled Enabled.
4-74
4.16 Sub Monitor
J617: DISP-1
(FULL LOG)
RPU-013
J618: DISP-2
(TB p.c.b)
(SEMI LOG)
Other types