4

Waveform Definition

Test Parameter Definitions

Parameter

Symbol

Definition

Units

Analog peak voltage

Vap, Vbp,

Vam, Vbm

The absolute value in V of the magnitude of the analog signal

(i.e. one sided rating)

V

Analog peak to peak voltage Vpp

The peak to peak signal magnitude in

mA of the analog signal

V

Analog peak to peak ratio

VppA/VppB

The ratio of A channel peak analog signal to B channel peak analog signal

V

Analog Crossing

Vx2, Vx4, Vx56, Vx78 The intersection in V of the A channel analog waveform with either the B channel analog

waveform or its compliment.

V

Analog Offset current

Voffset

The offset in V from the mid-point of the analog peak to peak signal to zero current

V

State Width

S, S2, S, S4

The number of electrical degrees between a transition in channel A and the neighboring

transition in channel B. There are 4 state per cycle, each nominally 90°e. The transitions

are determined by where the analog signal crosses the Zero point

°e

State Width Error

DS, DS2, DS, DS4

The deviation in electrical degrees of each state width from its ideal value of 90°e.

°e

Pulse Width

PA,PB

The number of electrical degrees that an analog output is greater than zero during one

cycle. This value is nominally 80°e or ½ cycle.

°e

Pulse Width Error

DP

The deviation in electrical degrees of each pulse width from its ideal value of 80°e.

°e

Ch A

Ch B

PA

PB

S1

S2

S3

S4

1.65 voltage

offset reference

Vpp