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400 SERIES MAINTENANCE MANUAL Page 5-51
P/N 190-00140-05 Rev. C
5.7.6.22 Discrete Switch and Altitude Inputs
For:
INPUT NAME PIN
ALTITUDE C4 (J1-61)
ALTITUDE C2 (J1-62)
ALTITUDE C1 (J1-63)
ALTITUDE B4 (J1-64)
ALTITUDE B2 (J1-65)
ALTITUDE B1 (J1-66)
ALTITUDE A4 (J1-67)
ALTITUDE A2 (J1-68)
ALTITUDE A1 (J1-69)
ALTITUDE D4 (J1-70)
OBS MODE SELECT (J1-71)
CDI SOURCE SELECT (J1-73)
DEMO MODE SELECT (J1-75)
TEST MODE SELECT (J1-76)
1. Apply alternating loads/levels to inputs.
2. Monitor the test results via the Main Discrete Inputs Test Page (Figure 5-11).
3. Verify switching between ACTIVE and INACTIVE loads (listed below) toggles the
corresponding indicator box for each of the input lines listed above.
Figure 5-11. Main Discrete Inputs Test Page
LOAD < 375 ohms to ground = ACTIVE ________OK
LOAD > 100 K ohms to ground = INACTIVE _______OK