X-Series Signal Analyzers Getting Started and Troubleshooting Guide 19
Quick Start
Instrument Information
Protecting Against Overpowering
The input circuitry of the analyzer can be damaged by applying signals that
exceed the maximum safe input level of +30 dBm average total power or +/-
0.2 Vdc (when DC coupled) or +/- 70 Vdc (when AC coupled). Refer to the
analyzer's specification guide for more details regarding the Maximum Safe
Input Level. Repairing damage to the input circuitry can be expensive.
If the analyzer will be used to measure signals which might be near the
maximum safe input level, use external attenuators and/or limiters to help
protect the analyzer input. The External Gain, amplitude Corrections, and/or
Ref Lvl Offset features may be used to compensate for the gains and losses of
external devices. External Gain and Corrections are under the Input/Output
menu and Ref Lvl Offset is under the AMPTD Y-Scale menu.
Instrument Maintenance
Cleaning the instrument
If this product is not used as specified, the protection provided by the
equipment could be impaired. This product must be used in a normal condition
(in which all means for protection are intact) only.
Install the instrument so that the detachable power cord is readily identifiable
and easily reached by the operator. The detachable power cord is the
instrument disconnecting device. It disconnects the mains circuits from the
mains supply before other parts of the instrument. The front panel switch is only
a standby switch and is not a LINE switch. Alternatively, an externally installed
switch or circuit breaker (which is readily identifiable and is easily reached by
the operator) may be used as a disconnecting device.
To prevent electrical shock, disconnect the signal analyzer from mains before
cleaning. Use a dry cloth or one slightly dampened with water to clean the
external case parts. Do not attempt to clean internally.
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