HP 8153A - Page 4

Safety Considerations
The Model HP 8153A is a Class 1 instrument (that is, an instrument with an
exposed metal chassis directly connected to earth via the power supply cable).
The symbol used to show a protective earth terminal in the instrument Is Qj) .
Before operation, you should review the instrument and manual, including the
red safety page, for safety markings and instructions. You must follow these to
ensure safe operation and to maintain the instrument in safe condition.
Some HP 8153A circuits are powered whenever the instrument is connected to
the AC power source. To disconnect from the line power, disconnect the power
cord either at the rear power-inlet or at the AC line-power source (receptacle).
One of these must always be accessible. If the instrument is in a cabinet, it must
be disconnected from the line power by the system’s line-power switch.
Warning
To avoid hazardous electrical shock, do not perform
electrical tests when there are signs of shipping damage to
any portion of the outer enclosure (covers, panels, etc.).
Line Power Requirements
The HP 8153A can operate from any single-phase AC power source that supplies
between lOOV and 240V at a frequency in the range from 40 to 60Hz. The
maximum power consumption is 55VA with all options installed.
The fuse used by this instrument is TIA / 250V (slow) (HP Part No. 2110-0007).
Changing the fuse should be carried out only by a qualified electrician or by HP
service personnel as it is necessary to open the instrument.
Line Power Cable
In accordance with international safety standards, this instrument has
a three-wire power cable. When connected to an appropriate AC power
receptacle, this cable earths the instrument cabinet. The type of power cable
shipped with each instrument depends on the country of destination. Refer to
Figure 0-1 for the part numbers of the power cables available.
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