Model 7500

Model 7500 Specifications

Print Specs

Oxygen Saturation Display Range: 0 to 100% SpO2
Pulse Rate Display Range: 18 to 321 pulses per minute (BPM)
Pulse Quality: LED, amber
Sensor Alarm: LED, amber
Pulse Strength Bargraph: LED, bargraph, tri-color segments
Alarm Indicator: LED, bi-color
Alarm Silenced: LED, amber
Numeric Displays: 3-digit, 7-segment LEDs, green
Low Battery: LED, amber

Accuracy – Sensors: Declared accuracy for compatible sensors can be foundin Nonin’s Sensor Accuracy document.
Alarm Volume:
High: 75 dBA
Low: 63 dBA

Informational Tone Volume:
High: 67 dBA
Low: 55 dBA

Measurement Wavelengths and Output Power:a
Red: 660 nm @ 0.8 mW maximum average power
Infrared: 910 nm @ 1.2 mW maximum average power

Memory: 70 hours (assuming continuous operation)
Operating: 0 °C to 40 °C (32 °F to 104 °F)
Storage/Transportation: -40 °C to 70 °C (-40 °F to 158 °F)
Time (from storage) for monitor to be ready for its intended use:
6 minutes to warm from -40 °C to 0 °C
23 minutes to cool from 70 °C to 40 °C

Operating: 10 to 90% noncondensing
Storage/Transportation: 10 to 95% noncondensing

Altitude (Operating): Up to 4,000 meters (13,123 feet)
Hyperbaric Pressure: Up to 4 atmospheres

a. This information is especially useful for clinicians performing photodynamic therapy.

Power Requirements (Mains): 100-240 VAC 50-60 Hz
Internal Power:
Battery: 7.2 volt NiMH battery pack
Operating Life (fully charged battery): 16 hours minimum
Storage Life: 21 days minimum
Recharge Rate: 4 hours maximum

Dimensions: Approximately 219 mm (8.6”) W x 92 mm (3.6”) H x 142 mm (5.6”) D
Weight: Approximately 900 grams (2 lbs) with battery
Warranty: 3 years
Classification per ANSI/AAMI ES60601-1 and CAN/CSA-C22.2 No. 60601-1:
Type of Protection: Class II (on AC power with MPP30 power supply). Internally powered (on battery power)
Degree of Protection: Type BF-Applied Part
Mode of Operation: Continuous
Enclosure Degree of Ingress Protection: IP33

Analog Outputs:
SpO2 Output Range: 0-1 VDC (0-100% SpO2), 1.27 VDC (out of track)
Pulse Rate Output Range: 0-1 VDC (0-300 BPM), 1.27 VDC (out of track)
Event Maker: 0 V (no event), 1 V (event occurred)
Accuracy: ±2% (SpO2), ±5% (Pulse Rate)
Load Current: 2 mA maximum

Model 7500 Troubleshooting


To Create New User Defined Defaults

(Note: Patient security must be off.)

  1. Scroll through all settings using limits button
  2. Change settings with + or – buttons
  3. Press Limits button after each change mode
  4. Scroll to end of settings (“Π Π” = minute)
  5. Press alarm Silence button (hold down) and push Limits button. 6. Screen will read “DEF ON”

Return to Factory Defaults

If device in User Defined Defaults mode (“dEF ON” appeared when unit first turned on):

  1. With unit “On”, Press and hold alarm silence button
  2. Press “-” button
  3. Screen will read “dEF OFF”
  4. Power down unit and then power up unit; Factory Defaults will be active

Patient Security Mode

Turn Patient Security Mode On (if applicable)

  1. Scroll through settings using limits button
  2. Change settings with + or – buttons
  3. Press Limits button after each change mode
  4. Scroll to end of settings (“Π Π” = minute)
  5. Push Power button to turn unit Off
  6. With unit Off, push and hold Alarm Silence button while turning the unit back on.
  7. Unit turns on and screen will read “SEC on”

Turn Off Patient Security (if applicable)

  1. Turn unit Off – hold Power button 3 seconds
  2. Hold down Alarm Silence button, then Limits button and then push Power button
  3. Unit turns on and screen will read “SEC OFF”

Data Collection & Transfer

Turn Unit On (Recording automatically begins)

Note: Only recording sessions > 1 minute in length are stored in memory.

Downloading Data to a PC 

(Note: patient security must be off for download to take place)


  1. Turn unit off – by holding power button for 1 second
  2. Use communication cable (7500SC) to connect Nonin 7500 and computer
  3. On computer, open nVision software program & select 7500 oximeter as device. If you have old version of nVision software, please see bottom of this box.
  4. Hold down + button and press Power screen will read “PLA bac” during download.
  5. Unit will signal when download is complete

Device returns to normal operating mode after data transfer complete (user defined defaults active).

To Clear Memory (Note: Patient security must be off.)

  1. Scroll through settings to “CLr No” (push Limits button repeatedly to get to this option)
  2. Press + button
  3. “Yes” appears to the right of “CLr” on the display
  4. Press Limits button to confirm
  5. “dEL no” appears on screen
    1. Press + and “dEL YES” appears on screen
    2. Press Limits button to confirm
  6. “dnE CLr” confirms memory has been cleared


7500 Error Code List

Error Code Description
E01 Speaker Failure
E02 Sound communication failure due to excessive sync errors.
E03 Sound communication failure due to excessive Watchdog or Nak errors.
E04 System check failed
E05 Parameter memory error
E06 OEM III communication failure
E07 Patient memory failure during play back.


Frequently Asked Questions

What is included in the 7500 package assembly?

  • Model 7500 Tabletop Pulse Oximeter
  • One (1) 8000AA 3-meter finger clip sensor
  • 7.2 V battery pack
  • Operator’s Manual
  • AC adapter

What is the longest overall combination of sensor and extension cable that can be used with the 7500?

The recommended overall maximum length of the sensor and extension cable is 40 feet (12 meters).

How many hours of pulse oximetry data can be stored in memory for download?

Up to 70 hours of pulse rate and SpO2 data may be stored. nVision software may be used to retrieve and analyze the data.

How is the memory cleared?

Patient memory can be cleared using the Model 7500’s Setup mode. Press the Limits button to enter Setup mode, and use the Limits button again to scroll through the device’s options until Memory Clear is displayed. Select “Yes” or “No” using the Plus (+) or Minus (-) buttons to clear patient memory, and then confirm your selection using the Limits button.

What kind of batteries can I use in the Model 7500?

Nonin’s rechargeable NiMH battery pack is required for battery operation of the 7500.

Can the Model 7500 be used without a battery pack in place?

Yes. The Model 7500 can be operated on AC power without a battery pack.

How many hours of battery life can I expect?

Sixteen (16) hours minimum when fully charged.

How long does it take to recharge the battery pack?

Approximately four hours if the battery pack is completely discharged and the system is not in use. The battery pack continuously charges while the device is plugged into AC power. Charging will be longer if the system is in use.

What is the Patient Security Mode and how does it work?

Alarm limits cannot be changed when the Model 7500 is in Patient Security Mode. Security mode prevents accidental changes to critical parameters. The Model 7500 allows users to lock and unlock alarm limits, volume settings, and time settings through the use of Patient Security Mode. Patient Security Mode remains active even when the device is turned off and then turns back on. Patient Security Mode is retained even when both external and battery power are lost. When the Patient Security Mode is enabled, operators cannot change SpO2 or Pulse Rate limits or Alarm Volume – though it is still possible to view those settings. In Patient Security Mode, operators cannot view or set the time and date. To enter Patient Security Mode, press and hold the Alarm Silence button while turning off the device. To exit Patient Security Mode, press and hold the Alarm Silence and Limits buttons while turning on the device.

To view whether Patient Security Mode is active, the Model 7500 must be restarted. When the device is restarted, the Patient Security Mode status is displayed on the Numeric LEDs for one second.

“SEC on” is displayed when Patient Security Mode is enabled.

“SEC off” is displayed when Patient Security Mode is disabled.

Can the Model 7500 be used in Homecare setting?

Yes, the Model 7500 may be used for Homecare. The Patient Security Mode makes the device ideal for this application.

Can the Model 7500 be used for EMS application?

Yes, the Model 7500 may be used for EMS.

Can the Model 7500 be used with neonates?

Yes, the Model 7500 may be used to monitor neonatal patients when used with an appropriate neonatal sensor.

Does the oximeter require calibration?

No calibration is required.

What is the warranty period for the Model 7500?

Battery Pack – 1 Year

Oximetry Module – 3 Years

What is the repair fee on an out-of-warranty monitor?

The out-of-warranty repair fee is $225.


Nonin Medical Inc
(Global Headquarters)

13700 1st Ave N,
Plymouth, MN 55441


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Nonin Medical B.V.

Doctor Paul Janssenweg 150
5026 RH Tilburg


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