Bird Technologies AT-400 - Manual (Page 36)

Bird AT-400 Antenna Tester
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comparison. For example, if you save a trace displayed in
VSWR, you can compare it to a trace displayed in %Match.
You can also change the frequency band of the new trace to
effectively zoom in on a particular section of the saved trace.
This may be helpful in pinpointing a problem area in a failed
limit test.
The desired units, band, and scale should be selected. You
should be in the single hold mode and the trace you want
stored should be displayed. If continuous sweep type is
selected, the trace displayed when you save will be stored.
y Press the MENU key.
y Press the SWEPT FREQ key.
y Press the TRACE key.
y Press the SAVE TRACE key.
y Press a REG-n key that has empty displayed. If you
select a full register the new trace will overwrite the old
trace. If registers 1-4 are full press the MORE SAVE
key to access 5-8 and again to access 9-12. If needed, use
the ESC key to back up.

NOTE: It is a good idea to keep a record of which traces
are in which register as they are identified by register
number only.
Recalling a Trace
Follow the steps below to recall a saved trace.
Figure 10
Save a Trace
Reg-1
Empty Reg-2
Empty Reg-3
Empty Reg-5
Empty More
Save
VSWR
2.0
1.0
65.00 MHz 520.00
1.35
260.00 MHz
<HOLD>