Chapter 6 -- Panel Indicators and Connectors--Front Panel
6 - 1
Chapter 6 -- Panel Indicators and Connectors
Front Panel
The Reference 3000 front panel includes two connectors and four backlighted LED indicators. Each of these
will be discussed in turn. A picture of the Reference 3000 front panel can be seen in Figure 4 - 1.
The cell connections are discussed at great length in Chapter 5. A pin-out of the two cell cable connectors can
be found in Appendix B.
Counter/Working Connector
The Counter/Working connector is a 15-pin female D-type connector. It contains the high current connections
between a Reference 3000 and an electrochemical test cell.
The Counter/Working connector is normally connected to a Gamry Instruments supplied cell cable. Gamry’s
Counter/Working cables always include fuses that prevent instrument failure when a battery of other energy
source is improperly connected to the cable.
In addition to the pins used for cell connections, the Reference 3000 Counter/Working Connector also uses
five pins to read a cell cable ID. Gamry’s software can compensate for the cell cable characteristics for optimal
system performance, especially in EIS (Electrochemical Impedance Spectroscopy).
Sense Inputs Connector
The Sense Inputs connector is a 15-pin male D-type connector. It contains high impedance voltage sense
inputs. These inputs are used to measure voltages in the electrochemical test cell.
The Sense Inputs connector is normally connected to a Gamry Instruments supplied cell cable.
In addition to the pins used for cell connections, the Reference 3000 Sense Inputs connector also uses five pins
to read a cell cable ID. Gamry’s software can compensate for the cell cable characteristics for optimal system
performance, especially in EIS (Electrochemical Impedance Spectroscopy).
The Power LED
The Power LED is located on the lower left of the Reference 3000 front panel. It normally glows a steady blue,
when the Reference 3000 is turned on and has passed some simple self-tests.
When the Reference 3000 is first turned on, the Power LED will glow steadily for a second or two, blink three
times, and then go to its normal steady blue output. Each blink in this sequence indicates successful
completion of a portion of the Power PC’s power-up self-test routine.
A Reference 3000's Power LED blinks when that instrument is selected in the Framework's Instrument Manager.
This allows easy identification of a specific instrument in a MultEchem system without looking at the instrument
Serial Label on the bottom of the instrument chassis.
When the Power LED is off, either:
• The rear panel power switch is off.
• There is no DC +24 volt supply connected to the rear panel DC Power In connector.
• The external DC power supply has no input power or is malfunctioning.
• One part of the Power PC’s power-up self-test has failed.
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