Prüfung von Consumer-HF - beam - Elektronik & Verlag

RF & Wireless
News
Low cost wireless
ECG cardiac monitor
can save lives and cut
healthcare costs
Developed by British medical services
startup Isansys - and based on
the Nordic nRF24AP2 ANT chips -
the LifeTouch HRV011 cardiac monitor
supports low cost yet continuous,
clinical-grade ECG monitoring for the
first time and can thus be used to detect
post cardiac arrest and other problems
when they are usually straightforward
to treat, avoiding life-threatening and
costly emergency room re-admissions.
By making the most costly elements of
the Isansys LifeTouch HRV011 ECG
wireless monitor recyclable, its application
cost can fall (with repeated usage)
to just a few tens of cents. In operation,
the HRV011 resembles a lightweight
bandage strip that adheres to a patient‘s
body and analyses the ECG signal of
every heartbeat in 4-5x more detail
than that required for a wired ECG
monitor. From this data, a proprietary
algorithm running within an on-board
ARM Cortex-based microcontroller
is used to calculate key physiological
parameters - including respiration rate
and R-to-R peak intervals - to detect
problems rapidly.
■ Isansys Lifecare Ltd
www.isansys.com
■ Nordic Semiconductor ASA
www.nordicsemi.com
Test & Measurement
Anritsu introduces High-Frequency
Sampling Oscilloscope Probe
Anritsu Company introduces the J1512A
Passive Probe for its BERTWave MP2100A
BERT and EYE/Pulse Scope solution. Also
compatible with GHz-band sampling oscilloscopes,
the J1512A simplifies monitoring
and confirming the signal levels and
waveforms of mounted electronic devices
without on-board coaxial connectors, such
as SMA connectors.
This will allow engineers to more efficiently
verify the designs of their highspeed
digital communications equipment
and devices. Covering the DC to 7.5 GHz
frequency band, the J1512A Passive Probe
Products
Crystek has introduced a new RF Power
Detector, the CPDETLS-4000. Encased
in a rugged SMA housing, this detector
is designed for low-cost RF power
monitoring in general lab use. The
has low input capacitance of
0.5 pF (max.), so the probe
supports monitoring of highspeed
signal waveforms. In
addition, the J1512A Passive
Probe attenuation ratio can be
switched between 10:1 and
20:1 by changing the resistance,
to optimize the measurement
condition.
Accurate evaluation of highfrequency
circuits is further
assured by the short ground
lead with excellent elasticity
of the J1512A. By adding this
high-frequency probe to the
MP2100A series, developers and manufacturers
have a highly efficient and accurate
test solution to verify the performance of
high-speed equipment and devices used in
Next Generation Networks (NGNs). The
BERTWave MP2100A is an all-in-one
instrument for BER, eye and pulse pattern
measurements and analyses. Since it performs
BER measurements and eye pattern
analysis simultaneously, it greatly shortens
measurement times.
■ Anritsu Corporation
www.anritsu.com
CRYSTEK introduces RF-Power detector
CPDETLS-4000 features a frequency
range of 10 MHz to 4 GHz. Crystek‘s RF
Power Detector is a zero-bias Schottky
diode intended for use as a large-signal
power detector (greater than -10 dBm).
Input signal is rated at +30 dBm maximum,
and video capacitance of the detector
is 100 pF. The CPDETLS-4000 has
an operating temperature range of -20 °C
to 70 °C and a storage temperature range
of -40 °C to 85 °C.
The Crystek CPDETLS-4000 RF Power
Detector is made in the U.S.A. and available
from Crystek‘s stocking distributors.
Family datasheets are available for download
at www.crystek.com.
■ Crystek Corporation
www.crystek.com
54 hf-praxis 9/2011