Getting started
3. Configure the GP
I 1 output to be asserted on unlock:
a. Press the MODULE button until GPS7 appears.
b. Use the up (▲)ordown(▼)arrowbuttontoselectSELECT G PIO .
c. Use the left (◄)orright(►)arrowbuttontoselectOutput 1.
d. Press the ENTER button.
e. Use the left (◄)orright(►)arrowbuttontoselectLoss of lock.
f. Press the E
NTER button.
4. Check that the voltage on the G PI 1 output measures between 4.5 V and 5.5 V.
5. Disconnect the antenna input. After 15 seconds, check that the GPI 1 output
is below 0.5 V.
6. Repeat this procedure for the GPI 2 output.
GPI inp
ut.
1. Configure the GPS7 GPI input to reset the program time:
a. Press the MODULE button until GPS7 appears.
b. Use the up (▲)ordown(▼)arrowbuttontoselectSELECT G PIO .
c. Use the left (◄)orright(►) arrow button to select Input 1.
d. Pres
stheENTER button.
e. Use the left (◄)orright(►)arrowbuttontoselectReset Program Time.
f. Press the ENTER button.
g. Press the BACK button to exit the Select GPIO menu.
2.
Press the up arrow to select the STATUS display.
3. If needed, use the left (◄)orright(►) arrow button to display Program
Time.
4. Write down the program time.
5. Connect the LTC/GPIO breakout adapter cable to the LTC/GPI DSUB on the
back of the GPS7 module.
6. Attach a 75 Ω terminator to the GPI input for 2 seconds, and then remove it.
7. Look at the program time now and compare it to the program time you wrote
down before. The time on the display should have reset to the default start
time of 00:00:00.00 and now be counting again.
TG8000 Multiformat Test Signal Generator User Manual 1–35