HP 3336A Operating Manual page 19

Model 3336A/B/C Installation
2-17. HP-IB Description.
2-18. A description of the HP-IB is provided in Section III of this manual. A study of this
information is necessary if you are not familiar with the HP-IB concept. Additional infor-
mation concerning the design criteria and operation of the bus is available in IEEE Standard
488-1978 '"'IEEE Standard Digital Interface for Programmable Instrumentation''.
2:19. Connecting Oven Option 004.
2-20. In order to use the Oven Option 004, an external connection must be made between
the rear panel 10 MHz OVEN OUTPUT and the REF IN connectors. A special connector
for this purpose, -hp- Part No. 1250-1499, is supplied with instruments having Option 004.
To prevent potential electrical or fire hazard, do not expose equip-
ment to rain or moisture.
2-21. OPERATING ENVIRONMENT.
2-22. In order for the Model 3336 to meet the specifications listed in Table 1-1, the
operating environment must be within the following limits:
Temperature 0 to +55°C
Relative Humidity <85% at 40°C
Altitude 4600 meters
(15,000 feet)
2-23. Cooling System.
2-24. The cooling fan intake and the exhaust vent are located in the rear panel. When
operating the instrument, provide at least 75 mm (3 inches) of clearance at the rear, and at
least 7 mm (4 inch) on all sides of the instrument. Failure to allow adequate air circulation
will result in excessive internal temperature, reducing instrument reliability.
2-25. It is imperative that the fan filter be inspected frequently and cleaned or replaced as
necessary to permit the free flow of air through the instrument. To clean the filter, remove
the four nuts that secure the filter retainer. Remove the filter and flush with soapy water,
rinse clean, and air dry.
2-26. Bench Operation.
2-27. The instrument has plastic feet attached to the bottom panel. The front feet contain
foldaway tilt stands for convenience in bench operation. The tilt stand raises the front of the
instrument for easier viewing of the control panel. The plastic feet are shaped to make
full width modular instruments self-align when they are stacked. A front handle kit, -hp- Part
No. 5061-0089 (Option 907), can be installed for ease of handling the instrument on the
bench (see Figure 2-3). The kit is shipped with the instrument if Option 907 is ordered.
@ Otherwise, the front handle kit is available separately by its -hp- part number.