Operator’s Checkout Procedure

Enter the CRT menu. DISPLAY will be outlined. Adjust the bezel controls for optimum focus, graticule scale illumina- tion, and signal intensity. Select READOUT and adjust the right bezel control for desired readout intensity. Select TRACE and adjust the center bezel control for a level trace.

Exit the CRT menu. The changes made while in the menu remain in effect.3. Input Channel Selection

Press the EXT and PARADE buttons. Check that CH-A, CH-A1, CH-A2, and CH-A3 inputs are selected.

The CH-A signal should appear on the left side of the CRT.

Move the generator signal (and EXT REF cable) to CH-A1. The display should move to the right. Repeat this step until the signal is connected to CH-A3 and the display is at the far right-hand side of the screen.

Change the input selections to CH-B, CH-B1, CH-B2, and CH-B3. Repeat the process of moving the generator signal.

4. Check Gain

The 1740A/1750A-Series internal calibrator can be used to check instrument calibration. Select CH-Ainput and set the generator for NTSC Color Bars output.

Enter the configuration menu and select CALIBRATE. Turn on the calibrator signal and note that the amplitude is 140 IRE (1.0 V PAL), with one cycle per division. See Figure 2-6.

Select VECTOR display mode. Note that the calibrator signal overlays the compass rose. Return to WAVEFORM display mode.

Exit the configuration menu. Note that the calibrator signal is automatically turned off. (For more information on using the calibrator signal, see page 3-21 and page 4-17.)

1740A/1750A Series Waveform/Vector Monitor User Manual

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