29
SECTION 4
MAINTENANCE AND CALIBRATION
Calibration
GENERAL
It is recommended that calibration of the 202H module be verified every 12 months. The instrument
requires warm up before beginning the calibration procedure.
EQUIPMENT REQUIRED
•
Peak reading 300 MHz bandwidth digital oscilloscope (Tektronix TDS 520 or equivalent).
•
3-1/2 digit DVM.
•
25 W, 50 ohm, x10 attenuator (BNC Part No. 6858-200 or equivalent).
•
2 W, 50 ohm, x10 attenuator.
•
Module Extender Cable kit (BNC Part No. 6859).
•
50 ohm coaxial cables (RG58 or equivalent).
WARNING
Hazardous shock
can result from improper operation-up to 2 kW peak power may be contacted. To
avoid personal injury, use safety precautions appropriate for high voltage sources:
Do not work alone.
Use extreme care when operating the module using extender cables. Use only
tools with insulated handles. Do not touch exposed circuitry inside the module:
the storage capacitor may hold a high voltage charge even for a few seconds
after powering down.
Never put more than one hand near the module when power is on. Make sure
your body is isolated from ground.
Use extreme care when handling output connections. Do not connect or
disconnect cables when high voltage is present.
Be sure the ground conductor of the ac power cord connects the instrument to a
solid earth ground.
