Tektronix 1910 - Digital Output Interface

Table 1-9
DIGITAL OUTPUT INTERFACE
Specification-1910 Operators
Performance Supplemental Perf. Ck.
Characteristics Requirements Information Step. No.
Digital Format Parallel, 12 balanced signal pairs
consisting
of 10 data bits per sam-
ple, a clock, and a timing reference
signal.
Timing Reference
I
See Fig. 1-9.
Signal
Encoding Format Positive Binary
Sampling Frequency 4 times color subcarrier nominal
(14.31818 MHz)
Sampling Phase Angle
Referenced to I and
Q axis.
Output
logic levels 10K ECl compatible. At 25°C.
High:
-0.96 to -0.81 V
low: -1.85 to -1.65 V
Dynamic
Range
10 bits/sample Blanking level (0 IRE) is at digital word
240.
Reference white (100 IRE) is at digital
word 800 (5.6 LSB/IRE).
Clock Timing
The 50% point
of the leading edge of
the clock pulse precedes the
data by
5 ns
±5 ns.
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