User`s guide

4 53220A/53230A User’s Guide
Safety Notices
CAUTION
A CAUTION notice denotes a hazard. It
calls attention to an operating proce-
dure, practice, or the like that, if not
correctly performed or adhered to,
could result in damage to the product
or loss of important data. Do not pro-
ceed beyond a CAUTION notice until
the indicated conditions are fully
understood and met.
WARNING
A WARNING notice denotes a hazard.
It calls attention to an operating pro-
cedure, practice, or the like that, if not
correctly performed or adhered to,
could result in personal injury or
death. Do not proceed beyond a
WARNING notice until the indicated
conditions are fully understood and
met.
Safety Symbols
WARNING
Do not connect the input channels of
the 53220A/53230A to AC line-voltage
mains or to circuits derived from AC
mains. The instrument must be used
in CAT I (isolated from mains) appli-
cations only. Do not use in other IEC
Measurement Category (CAT II, CAT
III, or CAT IV) applications. Failure to
observe these precautions may result
in electric shock and serious personal
injury.
WARNING
The BNC shells of the input terminals
are connected to the instrument chas-
sis. Verify signal polarity before mak-
ing any connections to the input
terminals.
Protection Limits
The Agilent 53220A/53230A 350 MHz Uni-
versal Counter provides protection circuitry
to prevent damage to the instrument and to
protect against the danger of electric shock,
provided the Protection Limits are not
exceeded and the instrument is properly
grounded. To ensure safe operation of the
instrument, do not exceed the Protection
Limits defined on the front panel:
WARNING
During battery operation, the maxi-
mum measured signal supplied by the
user is +
42V.
WARNING
Product Options 201/202 add parallel
Channel 1 and Channel 2 inputs to the
rear panel of the instrument. Signals
on the center conductor of either
panel’s channel BNCs are also
present on the corresponding center
conductor of the BNC on the opposite
panel.
Installing the Instrument
The Agilent 53220A/53230A operates in the
following line-voltage ranges:
100 - 240V, 50-60 Hz
100 - 127V, 440 Hz
90 VA Max
Instrument ventilation is through the sides
and rear. Do not obstruct the ventilation
holes in any of these locations.
Battery Operation
When operating the 53220A or 53230A
under battery power (Option 300), failure to
observe the following warnings may result
in damage to the instrument, electric shock,
and serious personal injury:
WARNING
Connect the instrument chassis to
earth ground during battery operation
to minimize shock hazard. Any inter-
ruption or disconnection of the pro-
tective earth terminal will cause a
potential shock hazard that could
result in personal injury.
WARNING
Under battery power, the instrument
chassis may float to the potential of
the measured signal supplied by the
user.
Chassis Ground
Refer to manual for addi-
tional safety information.
Standby Power. Unit is not
completely disconnected
from AC mains when power
switch is in standby position.
CAT I
IEC Measurement Category I.
Do NOT connect inputs to AC
mains or to circuits derived
from AC mains.
1 Watt Max into 50W
!
Channel / Setup