2-3 Connector Panels Instrument Overview
2-4 PN: 10580-00444 Rev. U MS2090A UG
2. IF Out: This 50 SMA connector provides internal IF output. The nominal frequency range is 325 MHz
with FFT capture bandwidth ≤ 32 MHz and 300 MHz with FFT capture bandwidth = 100 MHz. The nominal
RF output level is –4 dBm with a 10 MHz, –20 dBm input, and with 0 dB input attenuation and preamp off.
The spectrum can be inverted in certain RF input bands. Refer to spectrum analyzer measurement guide
(10580-00447) for information about Zero Span IF Output (Option 89). To prevent damage to your instrument,
do not use pliers or a wrench to tighten the connector.
3. USB Interface – Type A: The Field Master Pro has three Type A and one Type C USB connectors that
accept USB storage devices for saving measurements, setup data, and screen images. Two connectors are
located on the top panel and one is located on the side panel. To ensure the device or its data does not become
corrupted, select the eject icon to eject (unmount) the USB device before it is unplugged from the USB port (see
Section 2-8 “Selecting the Analyzer” on page 2-20).
4. GPS Antenna Connector: The GPS port on the Field Master Pro is a 50 female SMA connector. This
connector also provides 5.0/3.3 VDC for an active GPS antenna. To prevent damage to your instrument, do not
use pliers or a wrench to tighten the connector.
5. Bias Voltage: The bias voltage output port is a 50 SMA connector. The power supply is set up to provide
1 V to 34 V with a resolution of 0.1 V. The maximum current is 1 A, but with at total maximum power of 15 W.
To prevent damage to your instrument, do not use pliers or a wrench to tighten the connector.
6. Trigger In/Out: A TTL signal that is applied to the external trigger 50 SMA input connector causes a
single sweep to occur. In spectrum analysis, triggering is generally 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. To prevent damage to your instrument, do not use pliers or a wrench to tighten the connector.
7. Trigger In/Out / Ref Out (10 MHz): This port can be configured as a trigger in/out as above or as a reference
output. The reference output port is a 50 SMA connector that provides 10 MHz at approximately –7 dBm to
0 dBm. To prevent damage to your instrument, do not use pliers or a wrench to tighten the connector.
8. Ref In: The external reference input port is a 50 SMA connector that provides for input of an external
frequency reference. Refer to your Technical Data Sheet for valid frequencies. The instrument automatically
selects the frequency reference in the following order of priority: external, GNSS (GPS), then the internal time
base. To prevent damage to your instrument, do not use pliers or a wrench to tighten the connector.
9. Kensington
®
Lock (K-slot): Provides a slot that accepts Kensington style cable locks.
Note
The MS2090A is compatible with external USB memory devices that have an integrated keypad and
are FIPS compliant using AES 256-bit encryption.
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