Appendix A—Troubleshooting and Maintenance
358 BD Alaris
TM
System with Guardrails
TM
Suite MX User Manual
NOTE:
Performed at the minimum and maximum rated input voltage.
U
T
is the AC mains voltage prior to application of the test level.
At 80 MHz and 800 MHz, the higher frequency range applies.
These guidelines might not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz, and in the frequency
range 80 MHz - 2.5 GHz, are intended to decrease the likelihood that mobile/portable communications
equipment could cause interference if inadvertently brought into patient areas. For this reason, an
additional factor of 10/3 is used in calculating the recommended separation distance for transmitters in
these frequency ranges.
Field strengths from fixed transmitters [such as base stations for radio (cellular/cordless) telephones
and
mobile radios, amateur radio, AM/FM radio broadcast, TV broadcast] cannot be predicted
theoretically with
accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an
electromagnetic site survey should be considered. If the measured field strength in the location in which
the system is used exceeds the applicable RF compliance level, the system should be observed to
verify normal operation. If abnormal performance is observed, additional measures might be
necessary, such as reorienting or relocating the system.
Over the frequency range 150 kHz - 80 MHz, field strengths should be less than [V
1
] V/m.
The ISM (Industrial, Scientific and Medical) bands between 150 kHz and 80 MHz are 6.765 - 6.795
MHz, 13.553 - 13.567 MHz, 26.957 - 27.283 MHz, and 40.66 - 40.70 MHz.
Table 3
Recommended Separation Distances
Reduce the potential for electromagnetic interference by maintaining a minimum distance between portable and mobile
RF communications equipment (transmitters), and the system as recommended in this table, based on the maximum
output power of the communications equipment.
For transmitters rated at a maximum output power not listed in this table, the recommended separation
distance (d)
in meters (m) can be determined using the equation applicable to the frequency of the transmitter, where P is the
maximum output power rating of the transmitter in watts (W) based on the transmitter manufacturer.
Rated Maximum
Output Power of
Transmitter (W)
Separation Distance Based on Transmitter Frequency (m)
150 kHz - 80 MHz
Outside ISM
Bands
150 kHz - 80 MHz
In ISM Bands
80 MHz - 800 MHz 800 MHz - 2.5 GHz
3.5
__ d = [-----] √P
V
1
12
__ d = [-----] √P
V
2
12
__ d = [-----] √P
E
1
23
__ d = [-----] √P
E
1
0.01 0.02 0.06 0.06 0.12
0.1 0.06 0.19 0.19 0.36
1 0.18 0.6 0.6 1.15
10 0.55 1.9 1.9 3.64
100 1.75 6 6 11.5
To Next Page
