Nominal Traits
1-10
TDS 420A, TDS 430A & TDS 460A Service Manual
Table 1- 6: Nominal Traits — Display System
Name Description
Video Display Resolution 640 pixels horizontally by 480 pixels vertically in a display area of 5.04 inches horizontally
by 3.78 inches vertically
Waveform Display Graticule A single graticule 401 × 501 pi xels (8 × 10 di visions, wi th divisions that are 1 cm by
1cm)
Waveform Display Grey Scale 16 levels in variable-persistence display style
Table 1- 7: Nominal Traits — Data Storage
Name Description
Capacity, Nonvolatile Waveform Memory Total capacity is 120,000 points (one to four waveforms acquired with any combination of
record lengths that add up to 120,000 points). For available record lengths, see Record
Length Selection on page 1--9 of this chapter.
Capacity, Nonvolatile Setup Memory Ten setups
Batteries
1
Required Two lit hium poly-carbon monofluoride. Both are type BR2/3A, UL listed. Both are rated at
3.0 volt, 1.2 amp-hour.
1
Batteries are not accessible from the outside of the instrument; therefore, a service technician must replace them.
Table 1- 8: Nominal Traits — GPIB Interface, Video Output, and Power Fuse
Name Description
Interface, GPIB GPIB interface complies with IEEE Std 488.1-1987 and IEEE Std 488.2-1987.
Interface, RS-232 (Option 13 only) RS-232 interface complies with EIA/TIA 574.
Interface, Centronics (Option 13 only) Centronics interface complies with Centronics interface standard C332-44 Feb 1977,
REV A.
Power Supply, Printer (Option 13 only) Supply Volt age: +6.5 VDC
Maximum Current: 2 Amps, DC continuous
4 Amps DC maximum for durations < 10 msec
Output, Video Provides a video signal
1
, non-interlaced, with levels that comply with ANSI RS343A.
Output is through a rear-panel DB-15 connector.
Fuse Rating Either of two fuses
2
maybeused:a0.25I × 1.25I (UL 198.6, 3AG): 8A FAST, 250 V, or
a5mm× 20 mm, (IEC 127): 6.3 A FAST, 250 V.
1
VGA compatible at 30.6 kHz sync rate.
2
Each fuse type requires its own fuse cap.
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