Datasheet

Chapter 7: Maintenance
7.2.2. TCU calibration
This procedure must be followed for a general calibration of the TCU command knobs
and selectors. Refer to section 5.1 for TCU front panel commands description.
IMPORTANT:
The TCU is calibrated in factory. This procedure is not a routine
procedure and must be performed by experts only.
Material needed
• Voltmeter HP3458A or equivalent.
• Voltage source Keithley SMU237 or equivalent.
• Precision resistor 100 Ohm 1% or better.
• Cable: LEMO 6 poles female 6 bananas female (LEMO connector: LFGG.1B.306.CLAD72Z,
LEMO handler GMA.1B.065.DG).
DANGER
Contact with AC line potential can cause death or serious injury If
work on live electrical circuits is required, use all appropriate
precautions and hot work procedures required at your location.
Procedure
1. Power off the instrument.
2. Open the TCU top cover to access the main board.
84 QCL user’s manual v3.0