XR-T6166 Datasheet, PDF (12/16 Pages) Exar Corporation – Codirectional Digital Data Processor

XR-T6166
Codirectional Interface Pulse Masks
Figure 9 and Figure 10 show the CCITT G.703 64kbps
codirectional interface pulse masks for single and double
pulses respectively of either polarity. Note that this mask
is for the pulse measured at the XR-T6164 transmitter
output (application circuit shown in Figure 5) when
terminated with a 120Ω resistor.
V
1.0
0.5
0
ÌÌÌ _3.12µs
Ì ^{(3.9 -0.78)}
3.51µs
Ì _{(3.9 -0.39)}
ÌÌÌ ^3.9µs
4.29µs
(3.9 + 0.39)
6.5µs
(3.9 + 2.6)
7.8µs
(3.9 + 3.9)
Figure 9. Mask for a Single Pulse
V
1.0
0.5
0
ÌÌÌÌÌÌÌÌ
7.02µs
(7.8 - 0.78)
7.41µs
(7.8 - 0.39)
7.8µs
8.19µs
(7.8 + 0.39)
10.4µs
(7.8 + 2.6)
11.7µs
(7.8 + 3.9)
Figure 10. Mask for a Double Pulse
Rev. 2.02
12