Furuno CH-250 manual Transceiver Unit

2.7	Marker	Range and Bearing to Waypoint
2.8	Indication Unit	Meter, feet, fathom, P/B
2.9	Audio Monitor	2 W output (4 ohms), Freq. 1.0 kHz (external speaker required)
2.10	Event Mark	5 points
2.11	Hue	Low level enhanced echo disappeared
2.12	Red Color Enhancement	Strong echo indicated as expanded to range direction
2.13	Arrival Mark	Vector estimated point after 10 seconds to 6 min. (menu setting)
2.14	Target Lock (three function selected on menu)
	Scanning Reverse	Scanning orientation changed by pressing key
	Location Search	Auto-search for marker setting location
	Echo Search	Auto-search for signal level in a search zone, or manual search
2.15	Clatter	Suppresses low intensity echoes.
3	TRANSCEIVER UNIT
3.1	Frequency	60/ 88/ 150 kHz, Auto-setting according to Hull Unit Specs.
3.2	Output Power	0.8-1.2 kW (due to frequency), power reduction function available
3.3	Output Pulse Length	0.2 to 20.0 ms, according to range
3.4	TVG	Level: 100 dB max. , Distance: 1000 m
4	HULL UNIT
4.1	Transducer Travel	400 mm or 250 mm
4.2	Raise/lower Time	30 s at 400 mm travel
4.3	Ship’s Bow Setting	Setting offset on menu at installation within ±30°

4.4Horizontal Mode Control

Scanning Angle	6°	to 360° , 24° step
Scanning Center	6°	steps, 360° setting available
Scanning Step Angle	Normal: 6° , High speed: 12°
Elevation Angle	+5° to 90° , 1° step
Auto Tilt setting	±2° to ±10°

4.5Time to Train Full Circle

60 kHz:

	Range (m)		10	20	40	80	120	160	200	250	300	400	500	600	800	1200		1600
	Time	Norm	9	9	9	9	10	13	16	20	24	32	40	48	64	97		128
	(sec)	Fast	9	9	9	9	10	12	14	16	18	22	26	30	37	54		70
150 kHz:
	Range (m)		10	20	40	60	80	120	160	200	250	300	400	500	600	800	1000
	Time	Norm	7	7	7	7	7	10	13	16	20	24	32	40	48	64	81
	(sec)	Fast	7	7	7	7	7	9	11	13	15	17	21	25	28	36	45

SP - 2 E1316S01H