Page 10
Model 606, 607, 608, 609 Quick Start Guide
16) Select Black and then use the Black+ and -Black menu buttons to set the DC level for the green
output to 340 mV +/- 3 mV. Press Save and then the Back menu button to return to the previous
menu.
17) This completes the calibration adjustments for a Model 606 generator.
Skip steps 18 through 28 for the Model 606 and continue with step 29.
18) Select BP_Sync and then use the and -BP_Sync menu buttons to set the DC level to
600 mV +/- 3 mV. Press Save and then the Back menu button to return to the previous menu.
19) This completes the calibration adjustments for a Model 607 generator.
Skip steps 20 through 28 for the Model 606 and continue with step 29.
20) Disconnect the DC voltmeter from the generator and connect an oscilloscope to the NTSC/PAL
connector on the generator using a suitable 75 ohm coaxial cable. Make sure that oscilloscope has
a 75 ohm input impedance or that you have a suitable 75 ohm terminator attached if it has a high
impedance input.
21) Press the OPTIONS button and select NTSC_CAL. You will get the
menu shown on the right.
22) Adjust the oscilloscope’s timebase and sweep trigger to view one
stable horizontal scan line of video. Adjust the oscilloscope’s gain
and vertical positioning so that you can see both the blanking and
peak (white) video levels. The sync tips do not need to be displayed.
23) Adjust the Red, Green and Blue calibration factors to get minimum pk-pk color sub-carrier
modulation of the white level. If the modulation increases, you are adjusting in the wrong direction.
First adjust Green, then Red and then Blue.
24) Increase or decrease Red and Green by equal amounts to set the average white video level to 714
mV (+/- 5 mV) above Blanking.
25) Adjust Blue for minimum modulation.
26) Individually adjust Red and Green to get a 714 mV (+/- 5 mV) average white level with minimum
sub-carrier modulation.
27) Adjust Blue for minimum modulation.
28) Repeat steps 26 and 27 until the average white level is 714 mV (+/- 5 mV) and sub-carrier modula-
tion can not be reduced any further.
Note: The modulated RF output on the Model 609 does not have any calibration settings.
29) Remove the shorting jumper between pins 1 and 2 on J5 if you wish to prevent someone from
changing the calibration settings. The jumper can be positioned to just attach to pin 1 or pin 2 in
this case.
30) Make sure the rear cover is fastened back in place as described on page 2.
Options Menu - Output Calibration Continued
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-R_NTSC
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-G_NTSC
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-B_NTSC
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Save
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Back
