The MS2090A Field Master Pro uses two connector panels to provide for all physical IO. These panels use a variety of connector types intended for their purpose.
RF Connectors
The main RF input connector can be Type N, Type K, or Type V, depending on the frequency option that is installed. These are ruggedized 50 Ω connectors. Type N connectors are female and Type K and V are male. Additional IO is provided with the SMA and SMB style connectors. The SMA connectors are 50 Ω female and the SMB connectors are 50 Ω jack slip-on connectors.
Caution
To prevent damage to your instrument, do not use pliers or a plain wrench to tighten the connectors. Do not overtighten the connector. The recommended torque for Type K and V is 8 lbf·in (0.9 N·m or 90 N·cm). The recommended torque for Type N is 12 lbf·in (1.35 N·m or 135 N·cm).
This is a 50 Ω ruggedized connector of the following:
• Type N female with options 709, 714, and 720
• Type K male with options 26, 32, and 43
• Type V male with option 754
Maximum Input: ±50 VDC, +23 dBm, +13 dBm with Preamp On
To prevent damage to your instrument, do not try to mate incorrect connector types or use pliers or a plain wrench to tighten the connector. Do not overtighten the connector. The recommended torque for Type K and V is 8 lbf·in (0.9 N·m or 90 N·cm). The recommended torque for Type N is 12 lbf·in (1.35 N·m or 135 N·cm).
2. IF Out
This 50 Ω SMB jack 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 Zero Span IF Output (Option 89). This is a slip-on connector that should seat with a click.
3. USB Interface – Type A
The Field Master Pro has three Type A 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 it’s data does not become corrupted, press the eject icon to eject (unmount) the USB device before it is unplugged from the USB port (see Title Bar).
4. GPS Antenna Connector
The GPS antenna connection on the Field Master Pro is type SMA female. 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 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.
6. Trigger In/Out
A TTL signal that is applied to the external trigger 50 Ω SMB jack 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. This is a slip-on connector that should seat with a click.
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 Ω SMB male connector that provides 10 MHz at approximately –7 dBm to 0 dBm. This is a slip-on connector that should seat with a click.
8. Ref In
The external reference input port is a 50 Ω SMB jack connector that provides for input of an external frequency reference. Refer to your Technical Data Sheet for valid frequencies. This is a slip-on connector that should seat with a click. The instrument automatically selects the frequency reference in the following order of priority: external, GPS, then the internal time base.
The Field Master Pro has three Type A 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 more is located on the side panel. To ensure the device or it’s data does not become corrupted, press the eject icon to eject (unmount) the USB device before it is unplugged from the USB port (see Title Bar).
2. USB Interface – Type C
The USB Type-C port is used to connect the Field Master Pro directly to a PC and provides a remote SCPI programming interface via USBTMC (USB Test and Measurement Class). Refer to the MS2090A programming manual for remote SCPI control setup and command.
3. LAN Connection
The RJ‑45 connector is used to connect the Field Master Pro to a local area network or directly to a PC with an Ethernet crossover cable. See Ethernet Connection for more details.
The Micro Secure Digital slot is a small expansion slot located on the side panel. The slot accepts industry standard MicroSD storage cards and can be used for storing measurements, setup data, and screen images similar to USB storage devices.
Note
The MicroSD slot is not currently active. Functionality will be added via an upcoming software update.
6. Headset Jack
Note
The headset jack is not yet enabled. Functionality will be added via an upcoming software update.
The 3‑wire headset jack provides audio output from the built‑in sounds generated by the instrument. The jack accepts a 3.5 mm 3‑wire miniature phone plug such as those commonly used with cellular telephones.
7. External Power
This is a 2.5 mm by 5.5 mm barrel connector, 15 VDC, 5 A, center positive. The external power connector is used to power the unit and for battery charging. An orange blinking LED power button indicates that the instrument battery is being charged by the external charging unit. The indicator is a steady green when the battery is fully charged.
Warning
When using the AC-DC Adapter, always use a three-wire power cable that is connected to a three-wire power line outlet. If power is supplied without grounding the equipment in this manner, the user is at risk of receiving a severe or fatal electric shock.
