Sercel Inc LRU ユーザーズマニュアル

(Typical @ 2 ms sample rate and 25°C)

Maximum number of FDU's per LRU :

-

120 with up to 30 m interval 

-

96 with up to 55 m interval

-

80 with up to 75 m interval

Maximum number of FDU's between LRU's or between LRU

and LAU :

-

60 with up to 30 m interval 

-

48 with up to 55 m interval

-

40 with up to 75 m interval

Material

Aluminium

Dimension and Weights 

Size

380x380x225 mm (14.9x14.9x8.8 in)

Weigths

12.6 kg (27.8 lbs)

Power

Operating Power Voltage 10.5 to 15 VDC, 2 battery

connectors, to allow

uninterrupted operation during

battery replacement

Power consumption

Master : 23 W

Slave : 80 W when retrieving

Sleep : 1,2 W

Operating Temperatures -40°C to 70°C

Storage Temperatures

-40°C to 70°C

Water Depth

1.5 m

Radio link between LRU’s 
(Typical propagation condition, bit error rate better than 10

-6

,

8 m (26 feet) antenna mast, Yagi type antenna)

- 16 km (10 miles) up to 240 Channels (*) @2ms sample
rate real time retrieval.
- 24 km (15 miles) up to   60 Channels (*) @2ms sample
rate real time retrieval.

RF Characteristics :

RF Frequencies

USA use : limited to 216 MHz to
218 MHz and 219 MHz to 220 MHz

Canadian use : limited to 217 MHz to
218 MHz and 219 MHz to 220 MHz
Other countries : in respect with local
regulation
Overall capability : 215 MHz to 250 MHz

RF Output Power

RF power management ; 6W nominal

RF Output
Impedance

50 

Ω

FCC Emission
Designators 250KD1D and 800KD1D

Radio Functions

Communication with another LRU
for data transmission with error
recovery and temporary storage

Cable Functions

full LAUX capabilities

Tests capabilities

Power supply
Radio data transmission

Cable data transmission
Field tests 
Instrument tests

Antenna spectrum monitoring capability

Radio setup

Pocket terminal connection

capability

Memory

4Mb local buffer for non-real time

transmission mode

Interval between
LRU's or LRU and LAUX
on transverse

Up to 300 m with ST cable
Up to 250 m with WPSR
Up to 400 m with WPSRLR