Operating Basics
GTS1063 and GTS1250 GBIC Test Systems Instruction Manual
27
GBIC Test
System
GBIC
Tx
Rx
(Tx and Rx ends are close together)
Select
PRBS7,
LONG,
SHORT,
CPAT, or
CJTPAT Tx
patterns
Set Rx
pattern to
match
transmit
pattern
GBE Fiber path under test
GB1400R
Clk
Data
Recov Clk
Recov Data
TX JITTER
Adjustable
DC Voltage
Figure 14: Stress Testing via increasing Deterministic Jitter through the rear Tx
JITTER INPUT
Fiber Path Repeater or Monitor
You can use the GBIC Test System with Option 01 as a repeater or monitor in a
gigabit ethernet (GBE) fiber path. Short wavelength (780 nm, 850 nm) multi-
mode optical transceivers are capable of spanning 550 m on quality fibers.
Single-mode long wavelength (1310 nm, 1550 nm) optical transceivers are
capable of spanning 10 kilometers. Metallic twisted pair cables are sufficient for
many short (75 m) links. You can extend these ranges using a repeater.
To use the GBIC Test System as a repeater or monitor in the fiber path perform
the following steps:
1. Set up the GBIC Test System as shown in Figure 15.
2. Select the EXT TRANSMIT PATTERN.
3. Connect a coaxial cable between the RECOV. DATA and EXT DATA IN
connectors.
4. Insert the GBIC Test System into the fiber path at the GBIC Tx and Rx
connectors.
5. The GBIC Test System should now repeat the data farther down the fiber
path.
6. To monitor the data on the fiber, use a coaxial cable to connect the
+Rx DATA connector of the GBIC Test System to the input of an
oscilloscope, protocol analyzer, or other monitoring equipment.
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