Spacelabs 90343
Spacelabs · Model 90343
SPACELABS 90343 The Spacelabs Medical Digital Telemetry system provides continuous electrocardiographic (ECG) monitoring to detect ST segment changes, abnormal cardiac rhythms, including asystole, ventricular fibrillation, and ventricular tachycardia. When the system is used with the multiparameter digital telemetry transmitter (90343) and the Ambulatory Blood Pressure (ABP) monitor (90217), monitoring of ECG signals is enhanced by the availability of continuous or episodic pulse oximetry (SpO2) measurements and/or episodic noninvasive blood pressure (NIBP) measurements.
Key tips
- ·A no-signal/flatline alarm gets checked on the patient first, not the monitor - rule out a real clinical event before troubleshooting.
- ·Recalibrate NIBP against a reference manometer, not just a self-test pass.
- ·Reused patient cables (SpO2, ECG leads) are a common source of intermittent-fault complaints - swap the cable before the module.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
Telemetry transmitter drops / poor RF coverage
HighSymptoms: A patient's waveform drops out or is noisy at the central station, coverage gaps on the floor.
Root cause: Weak or aged transmitter, depleted transmitter batteries, antenna / receiver-system fault, or RF interference / dead spots.
Receiver housing / SDLC bus fault
MediumSymptoms: A whole bank of channels drops at the central station, a housing shows offline.
Root cause: SDLC cabling between J100-J400, a receiver-module fault, or a power fault in the housing.
Cooling-fan fault in the receiver housing
MediumSymptoms: Overheating, intermittent channel loss; no airflow felt in a module bay.
Root cause: Failed housing cooling fan.
Transmitter ECG lead / patient-cable fault
MediumSymptoms: Noisy or absent ECG from one transmitter regardless of location.
Root cause: Worn lead set or the transmitter ECG input.
Central-station display / software fault
LowSymptoms: Central monitor will not display telemetry, freezes, or will not admit a patient.
Root cause: Central-station PC or software fault.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Telemetry transmitter
Class Major service partRel. cost $$$R&R Easy
Transmitter batteries / lead set
Class ConsumableRel. cost $R&R Easy
Receiver module
Class Major service partRel. cost $$$R&R Moderate
Receiver-housing cooling fan
Class Major service partRel. cost $R&R Moderate
SDLC / antenna cabling
Class Major service partRel. cost $$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Telemetry transmitter | Major service part | $$$ | Easy |
| Transmitter batteries / lead set | Consumable | $ | Easy |
| Receiver module | Major service part | $$$ | Moderate |
| Receiver-housing cooling fan | Major service part | $ | Moderate |
| SDLC / antenna cabling | Major service part | $$ | Moderate |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Routine cable and lead-wire inspection for fraying/wear
- ·Battery conditioning cycle
- ·NIBP calibration check against a reference manometer
- ·ECG / SpO2 accuracy verification against a patient simulator
- ·Annual electrical safety test
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: A patient drops out / noisy
- Fit fresh transmitter batteries and a known-good lead set.
- Test the transmitter in a known-good coverage area.
- Check for new RF interference or a coverage dead spot.
- Swap in a known-good transmitter.
- Escalate persistent floor-wide coverage problems to the antenna / receiver system.
Symptom: A bank of channels drops
- Turn the rear-panel DC power switch on and confirm both housing fans are running (feel for airflow in each 4-module bay).
- Replace a stopped cooling fan.
- Check the SDLC bus cabling between J100-J400 and any J200-J300 jumper.
- Reseat / swap the receiver module for those channels.
- Confirm all channels return at the central station.
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- ICU / CCU
- Emergency Department
- OR / PACU
- General med-surg floors
- Step-down units
- Telemetry units
Documents & Manuals
- Ultraview Telemetry Service Manual Drawings - Rev CService Manual · External
- Ultraview Telemetry Installation Instructions - Rev GUser Manual · External
- Ultraview Telemetry Technical Reference - Rev CUser Manual · External
- Ultraview Telemetry Technical Reference Drawings - Rev CUser Manual · External
- Ultraview Telemetry BrochureBrochure · External
- Ultraview Telemetry Field Replacement Procedure Rev BDocument · External
- Ultraview Telemetry Specification SheetDocument · External
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