| STETHOSCOPES |  |
STG
Stethoscope™
A high quality stethoscope, that has been fitted with the adapter, which adds an electronic sensor to the acoustic tube. Allows examiner to listen acoustically while concurrently recording and displaying heart or lung sounds on the Handheld STG or STG for PC. The STG Stethoscope™ cannot be sold as an independent product. It is only available as part of a system, or a replacement part.
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iPAQ settings:
1.
Tap Start > Settings > System Tab > iPAQ Audio > Microphone
AGC Tab.
2. Disable Automatic Gain Control.
3. Set Microphone Gain to 27.
4. Tap OK.
5. Tap Start > Settings > System Tab > Backlight > Battery
Power Tab
6. Adjust 'Turn of backlight if device is not used for' to 3
min.
Connecting STG Stethoscope to iPAQ:
1. Start recording with the STG software
2. Gently tap the diaphragm. If you don't see sharp spikes occupying
all vertical space of the screen, disconnect and reconnect iPAQ cable
from the iPAQ until you see spikes. The spikes will appear when iPAQ
switches to record from external microphone.
3. Firmly position stethoscope and start recording.
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Acoustic
Characteristics |
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| Sound quality | The sound that you hear with the STG Stethoscope is the sound that you hear with any acoustic stethoscope. |
| Comparability | The STG Stethoscope acoustic quality is comparable to Littmann Master Classic II. |
| Bell and Diaphragm Modes | The chest piece lets you monitor low and high-frequency sounds by alternating pressure on the chest piece. Reduce pressure for the bell mode, increase pressure for the diaphragm mode. |
| Length | 69cm (27in) |
| Chest piece rim | Nonchill plastic rim |
| Ear tips | Soft sealing ear tips |
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Sound
Recording and Visualization |
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| System Frequency Response | 50Hz to 2000Hz |
| Sensitivity | -44±4dB |
| Supply Voltage | 1.2V Min, 20V Max |
| Rated Current Drain | 130 µA Max @ Ta –25°C |
| Temperature | -40°C to +70°C |
| Recording mechanism | Electret microphone is positioned in the space continuous with the tubing chamber. |
| Output jack | 3.5mm stereo audio jack. signal is on ring and tip that are tied together. |
| Safety and EMI tests | Has passed Safety and EMI tests. |