Ert Communication Error; Check Communication Between The Pc And Ert Control/Gating Module - SA Instruments 1030 Operation Manual

Troubleshooting

ERT communication error

This error means the ERT Control/Gating Module is not receiving valid data from the
ERT Module. It can occur for one of the following reasons:
1. battery is discharged
2. faulty connection of the Battery Pack Cable at the Battery Pack or at the Module
3. fiber optic signal is not getting to the ERT Control/Gating Module
The Battery Pack voltage can be checked with a digital volt meter or by connecting it
to the ERT Control/Gating Module's internal battery charger. If connecting to the ERT
Control/Gating Module, open the CHARGER window and read the voltage on the last
line. A fully charged battery will be > 6.5V it will stop operating the module when it is
less than 5.8 V. We issue the low voltage error message when the battery's voltage
reached 6.0 V.
If the battery is OK, test the ERT Module's Battery Pack and cable by holding the
ERT Module and Battery Pack with one hand so that the Battery Pack connections are
visible. Connect the Battery Pack Cable with the other hand and observe a red light in
the module's fiber optic port. Gently move the cable at each connection.
interruption of light from the fiber optic port would indicate a potential short in the cable
or connections.
Check the fiber optic signal by observing the red light at the fiber optic driver on the
ERT Module. Connect the fiber optic cable to the module and observe red light on the
other end of the fiber. Connect the fiber to the ERT Control/Gating Module at the port
labeled ECG. If the communication error persists, check for lint or blockage inside the
ECG port on the ERT Control/Gating Module and or try another fiber optic cable.
communication between the
Check
With the system running and with red bars for "R-detect + blanking time" open the R-
detect setup window (right click on the ECG waveform display) and change the wave
feature detection from "positive peak" to "negative peak". Within 2 seconds the red bars
should disappear. Switch back to "positive peak" and in 2 seconds or less the red bars
should again be displayed.
Determine if other features of the system are working? When pressing on the pillow, do
you get red bars indicating inspiration (when the signal dips)? If you click the invert
pulse box for respiration in the GATING SETUP window does the red bar switch to the
expiration portion of the waveform (flat portion between the dips)? Since the ECG and
respiration detection is performed by the ERT Control/Gating Module, a response 1 to 2
seconds to changes in parameters from the PC is a test that communication is working.
C-4
PC and ERT Control/Gating Module
Revision C, August 2013
Any