2-10 Test Panel Connectors Chapter 2 — Quick Start Guide
2-14 MS20xxA VNA Master UG 10580-00166 Rev. C
USB Interface - USB Type A
The VNA Master can also act as a USB Host, which allows various USB Flash Memory
devices to be connected to the instrument for storing measurements and setups.
Headset Jack
The headset jack provides audio output from the built-in AM/FM/SSB demodulator for testing
and troubleshooting wireless communication systems. The jack accepts a 2.5 mm 3-wire
miniature phone plug such as those commonly used with cellular telephones.
Ext Trigger
A TTL signal applied to the External Trigger female BNC input connector causes a single sweep
to occur. This mode is used in zero span, and triggering occurs on the rising edge of the signal.
After the sweep is complete, the resultant trace is displayed until the next trigger signal
arrives.
Ext Freq Ref
The BNC female connector is used for connection of an external frequency reference or
external trigger. Select the
Ext Ref Freq soft key under the System menu to select the
frequency of the external reference from the list that is presented. The amplitude of the
External Reference should be between -10dBm and +10 dBm.
RF Detector
The RF detector connector is used for Power Monitor measurements (Option 5). Refer to the
table of available RF Detectors in section in Chapter 1, “General Information”.
SPA RF In
This is a 50 Ω Type-N female connector.
VNA Reflection/RF Out
This connector provides RF output at 50 Ω impedance for reflection measurements. Maximum
input is +23 dBm at
±50 Vdc.
VNA RF In
This is a 50 Ω Type-N female connector. Maximum input is +23dBm at +/- 50 Vdc.
GPS Antenna Connector
This GPS antenna connection is for GPS only (Option 31 only).
Note
The GPS antenna connection on the VNA Master is fitted with a reverse BNC
connector to help prevent damage to the GPS circuitry. A DC voltage is present on
this connector. Do not connect anything other than the Anritsu GPS antenna (part
number 2000-1410) to this port.
10580-00166C.book Page 14 Thursday, February 21, 2008 12:52 PM
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