Bird Technologies 4308 - Manual (Page 30)

I
Make all connections as short as possible to avoid mismatches and addi-
tional insertion losses.
I
Make all calibration checks on each range at the upper one-third of the
scales.
I
If the unit is found to be outside the stated accuracy, the unit must be re-
turned to the factory for recalibration.
Customer Service
Any maintenance or service procedure beyond scope of those provided in this section
should be referred to a qualified service center. Bird Electronic Corporation maintains
complete repair and calibration facilities at the following address:
Standard
Element
RF Power Source
Coaxial
Cable
Model 43
Filter
Load
Power Meter
Power Head
Model 4308
(Wattmeter
Under Test)
440-96 0 MH z
4308-1
50W
1.5 5 15
50 TRANSIT
50W
50E
400-1 000 MHz
Figure 7
Calibration Check Set-up
Bird Model 4308 Thruline Wattmeter
&