Nortel Networks Video Gaming Accessories 553-3001-211 Manual De Usuario
Page 844 of 894
QPC513 Enhanced Serial Data Interface card
Clock timing option
The ESDI card offers two timing options:
•
Internal: The ESDI card uses an internal timing source to synchronize
data transfers to the external device.
data transfers to the external device.
•
External: The ESDI card accepts a timing source from the high-speed
interface connector to synchronize data transfers to the external device.
interface connector to synchronize data transfers to the external device.
Test and maintenance features
The ESDI card has these built-in testing and maintenance capabilities:
Self-test
The ESDI card performs a self-test of its major components immediately after
power-up. The self-test can also be initiated through the Link Diagnostic
program LD 48. The self-test tests all ESDI functions up to, but not including,
the ESDI line drivers and receivers.
power-up. The self-test can also be initiated through the Link Diagnostic
program LD 48. The self-test tests all ESDI functions up to, but not including,
the ESDI line drivers and receivers.
Data Link Level LAPB protocol remote
host address
host address
(3), 1
Modify link control system parameters*
yes, (no)
Modify link performance thresholds
(Note 1)
(Note 1)
yes, (no)
Table 261
Characteristics of synchronous ports (Part 2 of 2)
Characteristics of synchronous ports (Part 2 of 2)
Characteristics
Description
Note 1: * See the Configuration Record (LD 17) in Software Input/Output:
Administration (553-3001-311) to modify the link control system
parameters and performance thresholds.
Administration (553-3001-311) to modify the link control system
parameters and performance thresholds.
Note 2: The values in parentheses are the default.