Fluke Biomedical Cufflink - Manual (Page 21)

Introduction and Specifications
Instrument Familiarity
1
1-9
Table 1-3. Analyzer Top and Front Panel Controls and Indicators (cont.)
Label Component Description
B
Esc Key The Esc (escape) key enables the user to exit any menu,
exit without saving new data, or abort any function of
CuffLink. Continuously holding down the Esc key will return
the user to the CuffLink logo display from any menu.
C
Function Keys The function keys are labeled Fl through F5. Pressing any
one of these keys will execute the function, defined by
software, that is displayed above that particular key.
D
Cuff Connect A quick disconnect type of port provides the output
connection from the pulse producing motor inside Cufflink,
to the line connecting the cuff and the BP patient monitor.
E
Cuff Output This is a voltage output proportional to cuff pressure
(10mv/mmHg). It is always active with a range of -5 V dc to
+5 V dc (-500 mmHg to +500 mmHg). The accuracy is
specified for positive pressures only.
Example:
1.0 V = 100 mmHg
2.5 V = 250 mmHg
This signal is also useful when connected to a storage
oscilloscope or strip recorder to observe the cuff
inflate/deflate cycle.
Output impedance is 100
Ω
.
F
Pulse output This is a voltage output proportional to pulse pressure. It is
only active when Cufflink is outputting pressure pulses. The
output is at 0 V in the inactive state. The pulse voltage is
taken from the pressure transducer and the large static cuff
pressure is subtracted. For example, if the cuff is inflated to
150 mmHg and the pulse is 1.2 mmHg in amplitude, only the
1.2 mmHg portion of the signal is presented at this output.
The pulse output voltage is 1 V dc/mmHg and has a range
of -5 VDC to +5 VDC (-5 mmHg to +5 mmHg).
Example:
1.0 V = 1.0 mmHg pulse
0.5 V = 0.5 mmHg pulse
When Cufflink is simulating blood pressure it removes the
static cuff pressure from the pulse output (forcing it to 0
VDC) at the beginning of each heartbeat. During the
heartbeat the amplitude of the pulse is output. As the cuff
deflates (or inflates) this process is repeated for each
heartbeat.
Output impedance is 100
Ω
.