User`s guide

4 Data Collection
The SS420x archives the 24-bit ADC data into four separate
long-term buffers for each of its analog channels. Each
channel can retain up-to 102 minutes worth of sample data
per channel at a sampling rate of 10 Hz. The buffer for each
channel is only cleared before starting a new collection.
The LED’s provide information related to the acquisition of
data by each channel. Each LED is associated with a channel.
If channel one is waiting for a trigger then LED one will be
blinking at a rate of approximately 5 Hz. If channel two is
acquiring data then LED two will be blinking at a rate of
approximately 0.5 Hz. If channel three is inactive, then LED
three will be OFF. This provides the user with a visual
feedback of the SS420x data acquisition sequence channel-by-
channel.
5 SS420x Installation
Connect the SS420x interface to the controlling computer or
Agilent Instrument Controller (AIC) using the serial
communications cable provided. Connect one end of the cable
to the serial port on the back of the SS420x. Connect the other
end of the cable to the appropriate serial (Com) port on the
AIC, e.g. Com 1. Make sure each connector is tightened
fastened. Each installed SS420x (up to 4) needs a separate
Com port.
Plug the SS420x power supply into a 120V electrical outlet.
Connect the power cord from the power supply into the
receptacle on the rear of the SS420x.
The red power LED should light. The four (4) green channel
indicator LED’s will sequentially light up during the power-up
test. When the test is complete, the green LED’s will go off and
the interface is ready to use. If this sequence does not
successfully complete, the SS420x must be powered off and
then on again.
SS420x User’s Guide 9