Tektronix 1730 Series, Instruction Manual

Page: 24 / 258

1730–Series Introduction
1–6
Table 1–1: Vertical Deflection System (Cont.)
Characteristic
Step
Number
Supplemental Information Requirement
X5 gain accuracy
±
5% 1 V input signal 9
X5 gain registration
≤
1 major div. of vertical shift from
baseline.
Unmagnified to magnified display 9
Variable gain range Input signals between 0.8 V and 2 V
can be adjusted to 140 IRE (1.0 V)
display. 160 mV and 400 mV for X5
gain. 9
Position range 1 V signal can be positioned so that
peak white and sync tip can be placed
at blanking level, with the DC RE-
STORER on, regardless of gain
setting. Applies to calibrated gain positions
only 9
Maximum absolute input level
±
5 VDC + peak AC Displays in excess of 200 IRE
(1.428 V) may cause frequency
response aberrations.
DC input impedance Greater than 15 k
W
(unterminated)
Return Loss (75
W
) video inputs
(CH-A, CH-B)
≥
40 dB from 50 kHz to 6 MHz A and B channels, loop-through
terminated in 75
W
. Input in use or not
in use, instrument power on or off, all
deflection factor settings.
19
Crosstalk between channels Greater than 50 dB of isolation
between channels. Measured at F
SC
between Channel A, Channel B, and
EXT REF.
Loop through isolation Greater than 80 dB of isolation
between loop-throughs. Measured at
F
SC
between Channel A, Channel B,
and EXT REF.
PIX MON frequency response 50 kHz to 6 MHz, within 3% of
response at 50 kHz Terminated in 75
W
14
PIX MON differential gain (50% APL) Within 1% with a 140 IRE (1.0 V) unit
display
PIX MON differential phase (50%
APL) Within 1
°
with a 140 IRE (1.0 V) unit
display
PIX MON DC level on output 0.5 V or less into 75
W.
load No input signal 11
PIX MON intensification (bright-up) During line select only. Active video of
selected lines has a DC offset of
approximately 180 mV.
PIX MON output impedance 75
W.
(nominal)
PIX MON return loss (75
W
)
≤
30 dB, 50 kHz to 6 MHz With instrument turned on 19
Input to PIX MON output gain ratio 1:1
±
5% at 15 kHz 11