User manual

NMEA 0183 Buffer - NBF-3
Page 15© 2013 Active Research Limited
Power Supply
Input Supply Voltage 10 to 35V DC
Input Supply Current
(NBF-3 only)
100mA max @ 12V DC (all outputs
@ full drive into 100Ω loads)
Input Supply Connector
Pluggable 2 way screw terminal,
3.5mm pitch
Input Protection
(NBF-3 only)
Continuous reverse polarity and
ESD protection
Power Indicator
LED, blue (lit constantly indicates
correct operation when input supply
connected)
Listener Power Output
Voltage
10 to 35V DC derived directly from
the input supply voltage
Listener Power Output
Current
500mA max @ <= 30°C (see note)*
(PTC self-resettable fuse)
Listener Power Output
Connector
Pluggable 2 way screw terminal,
3.5mm pitch
NMEA 0183 Port - Listener & Talkers
Number of
Listener / Input Ports
One isolated NMEA 0183 Listener
Number of
Talker / Output Ports
Six isolated NMEA 0183 Talkers
Compatibility
Fully NMEA 0183, RS422 & RS232
compatible. RS485 Listener
compatible
Galvanic Isolation
2500V input to ground 1500V
output to ground using ISO-Drive
Speed / baud rate 4800 to 115200 bps
Talker Output Voltage
drive
>= 2.1V (differential) into 100Ω
Talker Output Current
drive
20mA max.
Talker Output Protection Short circuit and ESD
Listener Input Voltage
Tolerance
-15V to +15V continuous, -35V to
+35V short term (<1 second)
Listener Input Protection
Current limited, overdrive protection
to 40V DC and ESD protection
Listener Data Indicator LED, green (ashes at data rate)
Connectors
Pluggable 2-way screw terminals,
3.5mm pitch
Approvals and Certications
EMC EN 60945 (sections 9 & 10)
Environmental Protection IP66
Operating Temperature -20°C to +70°C
Storage Temperature -40°C to +85°C
Relative Humidity 0 to 80% RH
Guarantee 3 years
All specications are taken with reference to an ambient temperature
(TA) of +25°C.
*Higher temperatures may cause the fuse to trip at less than 500mA.
Mechanical
Housing Material Polycarbonate
Protective Lid Material Polycarbonate
Sealing Materials
Expanded silicone foam gasket,
closed cell polyurethane splash guard
and ePTFE waterproof vent
Dimensions 127mm (L) x 106mm (W) x 48mm (H)
Weight 210g
Mounting
4 x 3.5mm lugs to allow panel mount
with self tapping screws (included),
optional DIN rail mount available on
request.
118.0
127.0
105.5
96.5
3.5
47.5
All measurements in mm
Specications
Dimensions
Figure 8 - Dimension Diagram