User`s guide

25
Operation
Getting Started
Getting Started
The 11970 series of millimeter wave mixers have no bias or back-short adjustments. 11970 Mixers
require an LO power of 14 to 18 dBm at the LO input.
Mixer Connections
This chapter contains connection and operation information listed by Spectrum Analyzer model number
If you are using an 11970Q, 11970U, 11970V or 11970W Mixer, and the shoulder of its waveguide
flange is not properly aligned with the flange of the device under test, amplitude measurement errors can
result. To ensure proper alignment, tighten each of the four flange screws in turn by small amounts,
moving clockwise around the flange.
NOTE 11970K and 11970A Mixers require flange screws that are different from those
used with the 11970Q, 11970U, 11970V and 11970W; 11970K and 11970A use
Part Number 3030-0221 (#4-40 hex head screw). 11970Q, 11970U, 11970V and
11970W use Part Number 1390-0671 (#4-40 hex head captive screw).