Telequipment DM64, Руководство пользователя

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1.12 Turn R1063 fully anti-elockwise- and note the shadows
in corners of display.
1.13 Turn Rl063 slowly clockwise until shadow just
disappears,then turn clockwise a further 100 (approx).
1.14 PressERASE and release.
1.15 Repeat Ops. 1.9 through 1.11.
1.16 Turn R1062 fully anti-elockwise, then turn clockwise
until display just brightens. (The effect is very slight).
1.17 Turn R1053 fully anti-clockwise.
1.18 Repeatedly press ERASE and release, and note shape
of display edges.
1.19 Repeat Op. 1.18 while slowly turning Rl053 clockwise
until minimum pincushion distortion is observed at edges
of display.
NOTE: Turning R1053 too far clockwise may causethe edges
of the display to become too bright. The optimum condition
is with
minimum pincushion distortion consistent with
uniformity of background illumination.
2.0 To set writing speed R 1026.
2.1 PressREP.
2.2 Turn BRILLIANCE 3/4 clockwise approximately.
2.3 Adjust FOCUS and ASTlG for sharpest trace.
2.4 PressSINGLE SHOT.
2.5 PressERASE and release.
2.6 Set TIME/DIV to 20 Jls.
2.7 Turn VARIABLE (speed) fully clockwise.
2.8 PressRESET and observe display.
2.9 If trace is not a continuous line, turn VARIABLE
(speed)anti-clockwise.
2.10 PressERASE and release.
2.11 Repeat Ops. 2.8 through 2.10 until a continuous line
may be stored with any break no greater than 1 mm.
2.12 Pressand hold BEAM LOCATE.
2.13 Turn CH1 POSITION until spot is level with top
graticule line.
2.14 ReleaseBEAM LOCATE.
2.15 PressRESET.
2.16 Repeat2.11 through 2.14 but at 2.13 use POSITION
to move spot down by one division.
2.17 Repeat 2.11 through 2.16; check that a trace is stored
along each graticule line. No line should have any break
>1
mm.
CAUTION: Do notdisturbTIME/DIVorVARIABLE (speed).
2.18 Connect Marker Generator to INPUT 1.
2.19 Set Marker Generator to 100
Jls
marker.
2.20 Set DC-GND-AC to DC.
2.21 PressREP.
2.22 Set VOL TS/DIV to 3 div approximately.
2.23 PressINT TRIG 1.
2.24 PressAC (Trig Mode).
2.25 Adjust STABILITY and TRIG LEVEL for locked
display.
2.26 Measure distance 'D' in di',isions between two conse-
cutive markers.
NOTE: Writing speed is given by 'D' Xl0.
2.27 Check writing speed> 25 div/ms; if less, turn Rl026
clockwise to increaseAvometer reading by approximately
2V.
2.28 Repeat Ops. 2.8 through 2.27 until writing speed>
25 divs/ms.
2.29 If however at 2.27 the writing speed is much greater
than 25 divs/ms, it may be noted that the contrast ratio
is poor, then:
1. Turn R1026 anticlockwise to decrease Avometer
reading by approximately 2 V.
2. Set DC-GND-AC to GND.
3. PressERASE and release.
4. PressSINGLE SHOT.
5. Turn STABI L1TY fully clockwise.
6. Repeat Ops. 2.8
to 227 until writing speed
>25 div/ms and contrast ratio is optimum.
NOTE: Do NOT disturb VARIABLE (speed).
3.0 To set enhance R 1014.
3.1 Set DC-GND-AC to GND.
3.2 Turn STABILITY fully clockwise.
3.3 PressSINGLE SHOT.
3.4 PressENHANCE.
3.5 Turn Rl014 fully anti-clockwise.
3.6 Set TIME/DIV to 2
Jls.
3.7 Set ENHANCE VARIABLE to MAX.
3.8 PressERASE and release.
3.9 PressRESET.
3.10 Turn Rl014 clockwise 50.
3.11 PressERASE and release.
3.12 PressRESET.
3.13 Check trace is continuous; if any breaks> 1 mm repeat
Op. 3.10 through 3.13.
3.14 Pressand hold BEAM LOCATE.
3.15 Turn CH1 POSITION, until spot is level with next
divisional line.
3.16 Release BEAM LOCATE.
3.17 Press RESET.
3.18 Check condition in Op. 3.13 exists at each divisional
line.
3.19 Disconnect Market Generator.
3.20 ReleaseENHANCE.
3.21 Press REP.
4.0 To check auto erase, R 112
4.1 Connect Signal Generator to INPUT 1.
4.2 Set Signal Generator to approximately 5 Hz.
4.3 Set DC-GND-AC to DC.
4.4 Set VOL TS/DIV to 3 divs approximately.
4.5 PressDC (Trig mode).