Atec Tektronix-1730 Series - Manual (Page 6)

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