Tektronix AWG7000 Series, Руководство по обслуживанию

Страница: 38 / 140

Adjustment Procedures
3-6
AWG7000 Series Service Manual
3. Click the 10 MHz Reference... button in the Service UI menu to display the
following setup window:
Figure 3-3: 10 MHz Reference Calibration setup window
4. Change the 10MHz Reference value using the up/down button or the
front-panel rotary knob so that the frequency counter reading is within the
range of 10 MHz ±1 Hz.
5. Click Save to EEPROM to save the data to the EEPROM.
6. Click Close to close the window.
YIG Drive Current
Calibration
This is a self calibration. The YIG for the internal clock source controls the
frequency by the main coil (tuning coil) and the FM coil currents. The sensitivity
differs between individual YIGs, this calibration is required to set the precise
frequency.
IPC Timing Calibration This is a self calibration. The instrument features high-speed communication called
IPC (Inter PLD Communication) between the internal Memory Controller and the
Awg Controller. This calibration is required to ensure the optimum timing to
enable the IPC in all frequency settings. Failing to perform this calibration may
disable access to the waveform memory and/or make the AWG board diagnostics
cause an error.
Data Timing Calibration The instrument operates at extremely high speeds between the waveform memory
on the AWG board and the Memory Controller, between the Memory Controller
and TEK0015, and between TEK0015 and HFD205.
This calibration is required to ensure the optimum timing to enable waveform
outputs in all frequency settings. Failing to perform this calibration may not only
disable normal waveform outputs, but may also make the waveform memory
diagnostics cause an error.
Up/down button