Tektronix VM700T, User Manual

Page: 108 / 138

VM700T Option 01 (NTSC) & Option 11 (PAL) User Manual
A- 1
Appendix A: Specification
The performance limits in this specification are valid with the following
conditions:
H
This instrument must have been calibrated/adjusted at an ambient tempera-
ture b20
_
C and +30
_
C.
H
The instrument must be in an environment with temperature, altitude,
humidity, and vibration within the operating limits described in this
specification.
H
The instrument must have had a warm-up period of at least 20 minutes.
H
The instrument must have had its signal-path-compensation routine last
executed after at least a 20 minute warm-up period at an ambient temperature
within
±
5
_
C of the current ambient temperature.
Any conditions that are unique to a particular characteristic are expressly stated
as part of that characteristic.
Electrical Characteristics
Table A- 1: Input characteristics
Characteristic Performance requirement Supplemental information
Channel A, B, and C User selectable.
Differential A – B, A -- C, B -- A,
B – C, C – A, and C -- B may also be
digitized for parallel component testing.
Input Type Loop-through BNC connectors
Return Loss (75
Ω)
Greater than 46 dB from 0 to 5 MHz Channels A, B, and C are loop-through
terminated in 75
Ω
in use or not; power on
or off.
Input Signal Range +3, –6 dB with respect to 1 V
p-p
nominal
video (1.41 V
p-p
to 0.5 V
p-p
) terminated in
75 Ω
.
Coupling DC, AC, Clamp
Clamp Independently programmable on each
channel as follows:
1. Timing with respect to sync
2. Clamp pulse width
3. Clamp reference level
4. Clamp time constant
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