Tektronix 1730 Series, Instruction Manual

Page: 27 / 258

1730–Series Introduction
1–9
Table 1–4: Horizontal Deflection System (Cont.)
Characteristic
Step
Number
Supplemental Information Requirement
LINE SELECT Displays the selected line in 1LINE.
Displays the selected line first in
2LINE. Intensifies selected line in
2FLD. In 15LINE, displays overlayed
lines in 1 or 2LINE, intensifies the
selected 15 lines in 2FLD. A small 15
is added to the bottom of the CRT
readout in 15LINE mode.
Readout NTSC:
Field 1: Lines 1 to 263
Field 2: Lines 1 to 262
All: Lines 1 to 262
PAL
Field 1: Lines 1 to 313
Field 2: Lines 314 to 625
All: Lines 1 to 312
PAL-M
Field 1: Lines 1 to 263
Field 2: Lines 264 to 525
All: Lines 1 to 262
Table 1–5: Synchronization
Characteristic Requirement Supplemental Information
Step
Number
Input requirements, internal reference
NTSC and PAL–M
PAL
Composite video or black burst with
sync amplitudes 40 IRE
±
6 dB
Composite video or black burst with
sync amplitudes 300 mV
±
6 dB
4
4
External reference Sync amplitude between 143 mV and
4 V will synchronize sweeps 4
External reference, DC input imped-
ance (unterminated) Greater than 15 k
Return loss (75 ) At least 40 dB from 50 kHz to 6 MHz Loop-through terminated in 75 ,
instrument power on or off
19
Absolute maximum input voltage
±
12 VDC plus peak AC