56-101-01178 Revision K
Page | 33
Figure 40
Test Set Configuration, Updated Altitude Correction
4.
Control Mode
– Allows user to select the default: 2-Channel (Ps & Pt) mode or
1-Channel (Pt-
Only) mode. You will see the operating “Mode:” is always indicated in
the status window located on the top right-side of the UI display (see Figure 41).
5. The Pt-
Only mode can be used to drive an Airspeed or MACH indicator that has it’s Ps
(static) port vented to ambient (
local barometric pressure
). When the single channel Pt-
only mode is selected, the 1811NG will perform a Go To Ground function before
transitioning into this mode to ensure the Test Set Ps port is at ambient barometric
pressure, at the conclusion of the Go To Ground the Test Set will leave the Ps port vented
to ambient while driving the Pt port to the Target pressure specified by the user.
Note:
The 1811NG always powers up into the default: 2-Channel (Ps & Pt) mode.
Figure 41
Setup 1 Control Mode(s)
6.
Copy History file to USB
: This allows a copy of the history log to be transferred to an
external USB flash drive. With the file on a flash drive it can be opened and reviewed
using any tool that allows viewing of ascii text files. At times this file could be emailed
to Barfield to aide in trouble shooting some issues/problems. In case of required
technical support, Barfield personnel may request that this file be forwarded to them for
troubleshooting purposes.