N9923AU-308 AGILENT TECHNOLOGIES, N9923AU-308 Datasheet - Page 10

• Manufacturer Part Number: N9923AU-308
• Description: Vector Voltmeter Software Upgrade Key
• Manufacturer: AGILENT TECHNOLOGIES

Specifications of N9923AU-308

• Features: Adds Vector Voltmeter Capability
• For Use With: N9923A FieldFox Vector Network Analyzer
• Lead Free Status / RoHS Status: na

VVM applications:
• Cable trimming of phase matched cables
• Verifying the isolation of 2-port components
• Radio navigation – VHF omnidirectional radio range (VOR) and
Cable TV distribution system, cable TV is a 75 ohm system
instrumentation landing system (ILS)
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Vector voltmeter
Using FieldFox’s vector voltmeter (VVM), the
phase shift and electrical length of a device
can be measured.
By utilizing the “zero” function, the phase
and electrical length of one device can be
measured relative to a “golden device”. You
can view results on the large display as far
as ten feet away. And since every FieldFox is
CalReady, you don’t need to calibrate when
VVM measurements are done at the test
port.
The VVM option also provides ratio mea-
surements of two receivers or two channels,
A/B or B/A. An external signal source is
required for this measurement. You can use
this capability to verify the magnitude and
phase differences between multiple signal
paths.
75 ohm device test
Most of the components used in cable
TV systems are 75 ohm, like cables, fi lters,
splitters and switches. Often the perfor-
mance of devices, such as the insertion loss
or return loss of a fi lter need to be tested in
the fi eld.
You can use the FieldFox RF VNA to measure
75-ohm devices easily, without needing to
purchase additional hardware or software
options. QuickCal, combined with a 50/75 ohm
adapter (eg. Agilent part: 1250-0597) at each
port and a 75 ohm load, turns the instrument
into a 75 ohm tester. Alternatively you can
use any of Agilent’s 75 ohm calibration kits,
along with a pair of 50/75 ohm adapters.
FieldFox