TB 9-6625-003-35
Figure 6. Attenuator accuracy - equipment setup.
SWR meter.
(5) Position TI controls as listed in (a) through (d) below:
(a) VERNIER and GAIN controls fully clockwise.
(b) RANGE switch to 0 DB.
(c) INPUT SELECTOR- switch to XTAL 200Ω.
(d) METER SCALE switch to NORMAL.
(6) Position SWR meter controls as listed in (a) through (d) below:
(a) GAIN control fully clockwise.
(b) RANGE-DB switch to 0 (zero)
(c) INPUT switch to LOW (Models-415B and 415BR only).
(d) EXPAND switch to NORMAL.
(7) Set test oscillator attenuator output to +20 dBm (decibels referred to 1
milliwatt) and adjust amplitude for convenient indication on SWR meter. Record SWR
meter indication.
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