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Getting Started
GB1400 User Manual 1-7
Initial Self-Check Procedure
You may perform the following procedure as an initial self-check of your
GB1400 Generator and Analyzer. It is also a useful introduction to the basic
features and operation of the GB1400.
The fan openings of the GB1400 needs 2-inches of clearance for proper
ventilation.
Procedure
1. Make sure both the Generator and Analyzer are equipped with the proper
fuse.
2. Make sure that the Generator and Analyzer rear-panel power switches
are ON, and that their front-panel power switches are in the STBY
position.
3. Plug both instruments into grounded (three-conductor) AC power outlets.
4. Connect a 50-Ohm SMA cable from the Generator CLOCK output to the
Analyzer CLOCK input. If using 75-Ohm option, use &5 OHM
SMA/BNC cable.
5. Connect a 50-Ohm SMA cable from the Generator DATA output to the
Analyzer DATA input.
6. Connect a 50-Ohm SMA cable from the Analyzer rear panel DATA
THRESHOLD output to the Analyzer DATA BAR input (required for
single-ended data inputs).
7. Power the Generator while pressing and holding its VIEW ANGLE,
MSB 1 and (PATTERN) CLEAR keys simultaneously. Release the key
after the message Default Settings appears in the display. Repeat this
procedure with the Analyzer. This will force both the Generator and
Analyzer to power up using factory default settings.
8. Set up the Generator clock and data outputs using controls in the
OUTPUT box as follows:
Set this parameter… to this value … using this procedure.
DATA amplitude. 2 volts Press the DATA key.
Press AMPLITUDE up/down keys until
data amplitude is set to 2.00V.
DATA baseline offset -1 volt Press BASELINE OFFSET up/down keys
until data baseline offset is set to -1.00V.
CLOCK amplitude 2 volts Press CLOCK.
Press AMPLITUDE up/down keys until
clock amplitude is set to 2.00V.
CLOCK baseline offset -1 volt Press BASELINE OFFSET up/down keys
until clock baseline OFFSET is set to
-1.00V.