Brainlab CRANIAL/ENT OPTICAL - 4.5 Pointer Electromagnetic Information

4.5 Pointer Electromagnetic Information
Electromagnetic Compatibility: Declaration
Softouch and Z-touch require special precautions regarding electromagnetic compatibility and
must be installed and put into service according to the electromagnetic compatibility information
provided in this guide.
Portable and mobile radio frequency communication may affect Softouch and Z-touch.
NOTE: These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, objects, and people.
Electromagnetic Environment
Floors should be wood, concrete, or ceramic tile to reduce electrostatic discharge. If floors are
covered with synthetic material, the relative humidity should be at least 30%. Power frequency
magnetic fields should be at levels characteristic of a typical location in a typical commercial or
hospital environment.
Portable and mobile RF communications equipment can affect Softouch and Z-touch. Field
strengths from fixed RF transmitters, as determined by an electromagnetic site survey,
a
should be
less than the compliance level in each frequency range.
b
Standards Immunity Test IEC 60601 Test Level Compliance
Level
IEC 61000-4-3 Radiated RF 3 V/m (80 MHz to 2.5 GHz) E1 = 3 V/m
IEC 61000-4-6 Conducted RF
3 V
eff
(150 kHz to 80 MHz)
V1 = 3 V
IEC 61000-4-4
Electrical fast transient/
burst
+/- 1 kV for input/output lines
+/- 2 kV for power supply lines
N/A
IEC 61000-4-5 Surge
+/- 1 kV differential mode
+/- 2 kV common mode
IEC
61000-4-11
Power supply input
lines:
• Voltage dips
• Short interruptions
• Voltage variations
<5% U
T
(>95% dip in U
T
) for half cycle
40% U
T
(60% dip in U
T
) for 5 cycles
70% U
T
(30% dip in U
T
) for 25 cycles
<5% U
T
(>95% dip in U
T
) for 5 s
IEC 61000-4-8
Power frequency (50/60
Hz) magnetic field
3 A/m 3 A/m
IEC 61000-4-2 Electrostatic discharge
+/- 8 kV air
+/- 6 kV contact
+/- 8 kV air
+/- 6 kV con-
tact
NOTE:
a
Field strengths from fixed RF transmitters cannot be theoretically predicted 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 Softouch or
Z-touch is used exceeds the applicable RF compliance level above, Softouch or Z-touch should
be observed to verify normal operation. If abnormal performance is observed, additional measures
may be necessary, such as reorienting or relocation Softouch or Z-touch.
b
Over the 150 kHz to 80 MHz frequency range, field strengths should be less than [V1] V/m.
Pointer Electromagnetic Information
54 Instrument User Guide Rev. 2.3 Cranial/ENT Optical