Measurement Computing LogBook Series - Manual (Page 87)

LogBook User’s Manual 919495 LBK and other non-DBK Options 5-11
Remote On/Off Switch and LED Indicator Options
The DB9 Terminal connector on LogBook/300 and LogBook/360 can be used to
connect a remote on/off switch and/or an LED indicator. If you are not using the
Terminal connector for another option, such as the LBK1 remote terminal, you may
find one of the following three remote options convenient.
Remote On/Off Switch and LED
You can use this option to power
your LogBook ON or OFF from a
remote location. One push-and-
release of the button will power the
unit on and the indicator LED will
light. A second push-and-release
of the button turns the unit and
indicator LED off.
Push-buttons are available that have
the LED and resistor built into the
switch.
What you will need:
(a) One “Momentary Contact” switch,
contact rating: >5 ma (DC or AC)
Push-button style recommended.
(b) One Male DB9 connector with
twisted-wire, 24 gage or better
(c) 1K ohm resistor*, rated > 0.125 W
(d) LED rated at <50ma with operating
voltage <3 VDC
*You may substitute a 500 ohm resistor to
obtain a brighter LED display.
Remote On/Off Switch (no LED)
You can use this option to power
your LogBook ON or OFF from a
remote location. One push-and-
release of the button will power the
unit on. A second push-and-release
of the button turns the unit off.
What you will need:
(a) One “Momentary Contact” switch,
contact rating: >5 ma (DC or AC)
Push-button style recommended.
(b) One Male DB9 connector with
twisted-wire, 24 gage or better
Remote LED Indicator
You can use this option to indicate
when a remote LogBook is powered
ON or OFF.
What you will need:
(a) One Male DB9 connector with
twisted-wire, 24 gage or better
(b) 1K ohm resistor*, rated > 0.125 W
(c) LED rated at <50 ma with operating
voltage <3 VDC
*You may substitute a 500 ohm resistor to
obtain a brighter LED display.
LogBook/300 Being Connected to a Remote Push-Button Switch and LED Indicator