777987-01 In Stock | Ships Today

National Instruments 777987-01 PXI Multiplexer Switch Module

Part Number 777987-01 is the identifying part number for the National Instruments PXI-2590 PXI Multiplexer Switch Module. This module can be operated in a 4 x 1 multiplexer configuration. As for the RF performance characteristics, the 777987-01 has a characteristic impedance of 50 Ω (nominal). The insertion loss, VSWR, and channel-to-channel isolation are frequency-dependent. Furthermore, the propagation delay is <3 ns while the rise time is <300 ps. 

The 777987-01 has a maximum switching voltage of 24 V and a maximum switching and maximum carry current of 1 A. Likewise, the maximum switching power is 24 W. Furthermore, the maximum RF carry power is 10 W up to 900 MHz. The DC path resistance during the initial phase is <0.1 Ω whereas it is >1 Ω during the end-of-life phase. 

The 777987-01 has an expected relay life of 5,000,000 mechanical cycles and 100,000 electrical cycles (at maximum load). Both the relay operate and release time at 20 °C is 15 ms. The module has an electromechanical, non-latching relay having gold-clad silver as the contact material. Likewise, 5 SMB jacks are used as I/O connectors. The module measures 0.8 in. x 3.9 in. x 6.3 in. in physical dimensions and weighs 8.5 oz. 

The relay in the 777987-01 has an operate time and release time of 15 ms at 20 °C The recommended temperature range for the operation of the 777987-01 is  0 °C to 50 °C  at a relative humidity of up to 5% to 85% noncondensing. 

On the other hand, it can be stored at –20 °C to 70 °C. The device meets the following safety standards for electrical equipment for measurement, control, and laboratory use: IEC 61010-1, EN 61010-1, UL 3111-1, UL 61010B-1, and CAN/CSA C22.2 No. 1010.1. Most importantly, the  777987-01 must be operated with shielded cabling to meet the EMC requirements. Likewise, it is recommended that the module should not be used to switch RF signals. This is because RF sources can be damaged when the relay actuates leading to a momentarily unterminated channel