User manual

2004 Stevens Water Monitoring Systems Inc. All Rights Reserved.
9
IMPORTANT: DIP switch 1 should be set in the “OFF position when the unit is being
shipped or in storage. If it is left “ON”, then The Shark’s internal battery will slowly
drain.
Switch 2:
ON position – enables RS-232 mode operation.
OFF position – enables RS485 mode operation.
DIP switch position 2 selects between RS-232 and RS485. RS485 operation requires the
use of an interface adapter in order to bring the RS485 lines out. See section 4.4.3 for a
wiring diagram that shows how to construct this adapter. Stevens also provides this
RS485 interface adapter as an accessory option.
Switch 3:
ON – Power LED will light up
OFF – Power LED will not light up
DIP switch position 3 is used to switch on/off the external power LED indicator. In some
low power applications the ~ 3mA of current drawn by this LED must be conserved.
This switch allows you to turn it off, to eliminate this current draw.
2.5 LED Indicators
There are two LED indicators on The Shark (see Figure 2) – the Power LED and the
Bluetooth
®
wireless connection LED. The following table shows the purpose of these
LED’s.
Power LED Indicator
Color Purpose
Green
External power is applied (with switch 3 in
the "ON" position)
Amber (Red + Green)
External power is applied and the internal
battery is charging (
with switch 3 in the "ON"
position)
Red
External power is applied and the internal
battery is charging (with switch 3 in the
"OFF" position)
Bluetooth
®
wireless connection LED Indicator
Color Purpose
Blue Flashing
The Shark in "Slave" operating mode
waiting
to be discovered and connected to.*
Blue Solid
The Shark is in a Bluetooth
®
connection.*
None (off) The Shark is in "Master" operating mode.*
* The blue LED can operate with or without external power applied, using the
internal battery
Table 1: LED Indicator color purpose