Specifications characterize the warranted performance of the instrument under the stated
operating conditions. Data in this document are Specifications unless otherwise noted.
Typical Specifications are specifications met by the majority of the instrument under the stated
operating conditions and are tested at 23 °C ambient temperature. Typical specifications are
not warranted.
Input Characteristics
Hazardous Voltage This icon denotes a warning advising you to take precautions
to avoid electrical shock.
Maximum voltage (cold-switching only) 90 Vrms, CAT I
Caution This module is rated for Measurement Category I and intended to carry
signal voltages no greater than 100 V. This module can withstand up to 500 V
impulse voltage. Do not use this module for connection to signals or for
measurements within Categories II, III, or IV. Do not connect to MAINs supply
circuits (for example, wall outlets) of 115 or 230 VAC.1
Caution When hazardous voltages (>42.4 Vpk/60 VDC) are present on any
channel, safety low-voltage (≤42.4 Vpk/60 VDC) cannot be connected to any other
channel.
Note NI recommends against switching active RF signals. As a relay actuates, the
channel is momentarily unterminated. Some RF sources can be damaged by
reflections if their outputs are not properly terminated. Refer to your RF source
documentation for more information.
Note National Instruments recommends against switching RF signals below
-35 dBm with this device.
Maximum carry current (per channel) 1.73 Arms
Maximum RF carry power (50 Ω load) 150 W
Minimum switch load -35 dBm
RF Performance Characteristics
Characteristic impedance (Z0
) 50 Ω, nominal
Insertion loss
≤3 GHz <0.2 dB
≤8 GHz <0.3 dB
≤12.4 GHz <0.4 dB
≤18 GHz <0.5 dB
≤26.5 GHz <0.6 dB
1 Measurement Categories CAT I and CAT O are equivalent. These test and measurement circuits are
not intended for direct connection to the MAINS building installations of Measurement Categories
CAT II, CAT III, or CAT IV.
