56-101-01175 Revision H Page | 49
9. TEST SET OPERATION
A. Preliminary Setup
1. Ensure that the DPS1000 Power ON//OFF switch (8) is in the OFF position prior to
connecting the AC power cable.
2. As a standard practice and under normal circumstances it is recommended that the
DPS1000 not have hoses connected prior to initialization. This is not a requirement
just an additional precaution.
Figure 46 DPS1000 Front Panel
B. Power ON
During normal use, it is recommended that the Test Set be powered ON and allowed to
complete its Power ON initialization process prior to connecting the hoses to the STATIC
(Ps) and PITOT (Pt) ports. During power ON initialization the following discovery occurs:
1. The Test Set displays a power ON initialization window during this phase as shown
above. There is a log file created that records all the initialization steps and results
that occur during this phase.
2. The Test Set measures the initial pressures found on STATIC (Ps) and PITOT (Pt)
ports and records them as a temporary value.
3. The ambient pressure is measured and recorded as a temporary value. This value
will be used by the Go To Ground function.
4. The Pt measurement channel performs a Qc (differential) auto-zero to trim any small
offset that has occurred.
5. An internal control channel leak test is performed. The control channel leak test
should not be confused with the actual leak test of the Test Set itself. The control
channels are very small pneumatic channels within the manifold between the
To Next Page
Loading...
