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Reference
GB1400 User Manual 3-15
The following controls are used to set clock and data output amplitude and
baseline offset:
CLOCK:
DATA:
AMPLITUDE (↑↑ , ↓↓ ):
BASELINE OFFSET (↑↑ , ↓↓ ):
Note that when the CLOCK key is pressed, its LED turns on and the display
shows clock output amplitude and offset. Similarly, when the DATA key is
pressed, its LED will turn on and the display shows data output amplitude and
offset. The general procedure for setting data and clock output amplitude and
baseline offset is shown below.
1. Press DATA. The display will show data output amplitude and offset.
2. Press the BASELINE OFFSET up/down keys to set the desired data signal
baseline offset.
3. Then press the AMPLITUDE up/down keys to set the desired data signal
amplitude.
4. Press CLOCK. The display will now show clock output amplitude and offset.
5. Press the BASELINE OFFSET up/down keys to set the desired clock signal
baseline offset.
6. Then press the AMPLITUDE up/down keys to set the desired clock signal
amplitude.
Logically Inverting Output Data (D-INV)
The INVERT DATA key may be used to logically invert the output data pattern,
that is change all 1s to 0s and 0s to 1s. If the INVERT DATA LED is off, then
the output data pattern is not inverted. However if the INVERT DATA LED is
on, the output data pattern is logically inverted. You can toggle the INVERT
DATA function on and off by pressing the INVERT DATA key. Note that
logically inverting the output pattern is the same as swapping the connections to
the DATA and DATA-BAR outputs.
To toggle output data inversion on or off, press the INVERT DATA key.