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Chapter 6 -- Panel Indicators and Connectors
Front Panel
The eQCM 10M front panel includes two connectors and 2 backlighted LED indicators. Each of these will be
discussed in turn. A picture of the eQCM 10M front panel can be seen in Figure 4 - .
Quartz Crystal Holder Connector
The Quartz Crystal Connector is a male BNC-type connector that is used to connect the eQCM 10M to an
electrochemical test cell. It is normally used with a Gamry Instruments supplied cell cable.
The Power LED
The Power LED is located on the right of the eQCM 10M front panel. It normally glows a steady blue when the
eQCM 10M is turned on.
When the Power LED is off, either:
The rear panel power switch is off.
•
There is no DC +12 volt supply connected to the rear panel DC Power In connector.
•
The external DC power supply has no input power or is malfunctioning.
•
The Data LED
The Data LED is located just right of the Power LED. It is a green LED and will be blinking during data
acquisition. Higher data acquisition rates may make the LED appear lighted continuously.
Rear Panel
The rear panel contains one switch and three connectors. A picture of the eQCM 10M rear panel can be seen
in Figure 4 - .
Power In Jack
The eQCM 10M derives all of its power from +12 volts DC input through the Power In jack. The input current
is less than 3 amps.
We recommend that you always use the external power supply supplied with your eQCM 10M to supply DC
power to the instrument. This supply is rated for operation from 100 to 240 volts AC, at frequencies from 50 to
60 Hz. It should therefore be useable worldwide. While an eQCM 10M may work with other power sources,
we cannot guarantee it will work to its full specifications.
If you have to use the eQCM 10M with a different supply, make sure that the supply is regulated, has an output
between 10 and 14 volts, and supplies 2.5 amps of load current.
Power input voltages less than 10 volts or greater than 14 volts can damage the eQCM
Power Switch
The Power Switch is located to the right the Power In jack.
Normally, the DC Power is connected before the Power Switch is turned ON. However, no damage will occur
if this switch is already in the ON position when the DC Power In cable is connected, or the AC power input is
connected to the external power supply.
Chapter 6 -- Panel Indicators and Connectors--Front Panel
Caution
10M.
6 - 1
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