Operator`s manual

Viewing Waveforms, Vectors, and Pictures
7-19
When the vector display is externally referenced, note that the burst vector does not lie along the 180º
line. You can rotate this display using the right knob or you can preset the rest position of the external
sync as follows:
1. Press the Config button.
2. If REFERENCE is not EXT, press the Enter button to select it.
3. Select VECTOR and then press the Enter button.
4. Select EXT PHASE PRESET and then turn the knob to preset the vector’s position using the
horizontal bar graphs.
When setting external phase preset, the knob will not scroll or spin the vector as it can do with the Vec.
Phase control. The external phase preset applies to both A: and B: inputs; there is not a separate preset
for each input.
NOTE:
The REFERENCE must set to EXT to adjust EXT PHASE PRESET.
Comparing Two Waveforms or Vectors (AVM-510A)
The AVM-510A has several ways to view and compare the signals at the A: and B: inputs. You can see
the waveforms of two composite signals together, either side-by-side or superimposed. You can
compare the waveforms of one composite and the Y (or G) channel of a component signal. You can
also display two composite vectors together (see Figures 7-21 to 7-23).
To view two waveforms at the same time, press the Input button once or twice until both the A and B
LEDs light. The label at the top left of the screen shows A and B.
Next to the Display button, the Alternate or Parade LED will be lit as follows:
•
Alternate  The two waveforms are on top of each other. The sweep rate can be 1H, 2H, or 2F.
The Wfm Pos button lets you choose which waveform to move vertically with the V Pos knob.
1 = A, 2 = B.
•
Parade  The two waveforms are side-by-side, with the A waveform on the left. The Sweep
button does not let you change anything. The Wfm Pos button still lets you move the waveforms
separately. Note that if you try to push the Display button to switch from Alternate to Parade and
nothing happens, the problem is that the sweep rate is on 2F. Push the Sweep button and then
push the Display button.
You can compare a composite waveform from Input A: with the first channel (Y or G) of a component
waveform in this same way. If the graticules for these two systems are different, the graticule for the
composite waveform is used.
•
You cannot view two vectors and two waveforms at the same time. Pressing the Vector button a
second time displays the waveform and vector from the Input A:.
•
Line Select not available with two vectors (or with two waveforms).
•
Vector Phase operates on both vectors together.
•
Var. Gain works on both vectors (or both waveforms) together.
•
It is not possible to display a composite and a component vector together.