Bio-Rad ChromLab™ Software - Manual (Page 263)

External Devices
Instrument Guide | 261
External Devices
Symptom Possible Cause Possible Solution
Unable to zero an
external device
connected to SIM
1 or
SIM 2 ports on the signal
import module (SIM).
Incorrect readings from
an external device
connected to SIM 1 or
SIM 2 ports.
Possible voltage offset between
the negative and ground input
terminals on the SIM. Install a jumper between the
negative and ground terminals
on the SIM 1 or SIM 2 ports.
See To connect an external
device to the SIM 1 and SIM 2
ports on page
107 .
Unable to connect to the
BioFrac™ fraction
collector.  The fraction collector is not
turned on.
 The NGC instrument loses
connection to the fraction
collector.
 The fluidic scheme includes
the fraction collector.
 Power on the external device
and click Retry on the dialog
box that appears.
 Power off both instruments
and then restart them in this
order:
1. The fraction collector
2. The NGC instrument
 Select a fluidic scheme that
does not include the fraction
collector.