Tektronix 1740A Series, Руководство пользователя

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Performance Verification
4–8
1740A/1750A/1760 – Series Service Manual
Table 4–1: Short-Form Performance Check
Step # Page # Step Requirement Step Name
18 Restorer Response 60 Hz (50 Hz PAL) Attenuation: Slow Mode 10%. Fast Mode
95%.
4–24
19 DC Restorer Blanking Shift Blanking shift with Presence or Absence of Burst: 1 IRE (7
mV PAL). Blanking shift with 10–90% APL Change: 1 IRE (7
mV PAL).
4–25
20 Differentiated Step Filter Attenuation: 40 dB at F
SC
. Step Amplitude: Within 2% of
flat display.
4–26
21 Amplifier Linearity Differential Phase: 1
°
. Differential Gain: 1%. (Measured
with a 140 IRE (1 V PAL) linearity signal (5-step, 10-step, or
ramp) with 40 IRE (300 mV PAL) subcarrier.
4–27
22 Quadrature Phase and R–Y Balance and
Display Quadrature Phasing Error: 0.5%. 4–27
23 Vector Phase, Gain, and Transients Phase Accuracy Error: 1.25
°
. Gain Accuracy Error: 2.5%. 4–28
24 Lock-In Range Subcarrier Regenerator Pull-in Range: NTSC 50 Hz. PAL
10 Hz.
4–29
25 Burst Phase with Burst Amplitude Change Phase Shift with Burst Amplitude Change of 6 dB: 2
°
. 4–30
26 Vector Phase Shift with Variable Gain Change Phase Shift with Variable Gain C3 to –6 dB: 0.5
°
. 4–30
27 Channel Phase Match Phase Shift with Video Input Channel Change: 1
°
. 4–30
28 Clamp Stability, Phase Control, and Position
Control Range Clamp Stability: 1/64 inch (0.4 mm). Phase Control Range:
360
°
continuous rotation. Position Control Range: 0.236 inch
(6 mm) from center.
4–31
29 External Horizontal Gain External Horizontal Gain: 2 divisions/Volt 2%. 4–31
30 RGB/YRGB Staircase Input Gain: 0.8 division 10%. Sweep Length: RGB
– 33% of normal, YRGB – 25% of normal.
4–32
31 Audio and Timecode Modes Audio Mode Full Scale Accuracy: 0.5 dB. Timecode Mode
Input Amplitude: Menu selectable for 140 IRE (1.0 V PAL)
deflection.
4–32
32 Audio Phasing, and Audio and Timecode
Bandwidths X/Y Input Phase Match: 1
°
(measured at 20 kHz). Audio
Bandwidth and Timecode Bandwidth: 500 kHz at –3 dB.
4–33
33 Remote Sync Remote Sync Frequency: 30 Hz, 90 Hz (25 Hz, 100 Hz PAL). 4–34
34 Return Loss Video Inputs: 40 dB to 6 MHz. Power on or off. Pix Out:
30 dB to 6 MHz. Power on.
4–35
35 SCH Phase Mode (1750A–Series, 1760–Series
Option SC Only) Absolute Accuracy: 5
°
. Color Frame Range: 70
°
. 4–36
36 Component Vector Gain (1760–Series Only) Vertical and Horizontal Gain Accuracy: 2.5%. 4–37
37 Lightning Gain and Variable Gain
Registration (1760–Series Only) Vertical Gain Accuracy: 2%. 4–38
38 Option Blanking Pulse (1760–Series Only) The falling edge of the option blanking pulse occurs 0.5
m
s (1
m
s
PAL) before the 50% point of the falling edge of the sync pulse
0.25
m
s.
4–38
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