Instruments, Digital Delay Generators

DB64 - Coax delay with 0.5 ns resolution

Stanford Research Systems

The SRS Model DB64 Coax Delay Box provides switch-controlled delays from 0 to 63.5 ns with 0.5 ns resolution. Applications include the timing of photomultiplier coincidences, set-up of time-to-amplitude converters, adjustment of signal phase, or any application which requires an adjustable, high-bandwidth analog delay.DB64 Coax Delay Switch controlled time delays 0 to 63.5 ns delay range 0.5 ns resolution Low reflections and feed-throughFeatures Specifications DB64 Coax Delay The SRS Model DB64 Coax Delay Box provides switch-controlled delays from 0 to 63.5 ns with 0.5 ns resolution. Applications include the timing of photomultiplier coincidences, set-up of time-to-amplitude converters, adjustment of signal phase, or any application which requires an adjustable, high-bandwidth analog delay. The interchangeable inputs/outputs are on BNC connectors. Internally, the delay line segments consist of accurate lengths of RG58A/U coax cable with 50 ? characteristic impedance. DPDT switches are used to insert or remove delay segments. Careful component selection, mechanical design, and PCB layout ensure low reflections and low switch feed-through for high speed signals. Two DB64s can be mounted side-by-side in a 19? rack using the RM1U rack mount accessory. A chassis lug is provided on the rear panel as a safety ground. Phone: (408)744-9040 ? Fax: (408)744-9049 ? email: info@thinkSRS.com ? www.thinkSRS.com DB64 Coax DelayDB64 Coax Delay Connectors BNC Characteristic impedance 50 ? Delay line cable RG58A/U (Belden 8259) Insertion delay 2.5 ns Delay range 0 to 63.5 ns Delay resolution 0.5 ns Delay error Signal reflection Switch feed through Maximum voltage 250 Vrms Maximum current 2 A Dimensions 8.3? ? 1.5? ? 8.0? (WHL) Weight 2 lbs Warranty One year parts and labor on defects in materials and workmanship Phone: (408)744-9040 ? Fax: (408)744-9049 ? email: info@thinkSRS.com ? www.thinkSRS.com Phone: (408)744-9040 ? Fax: (408)744-9049 ? email: info@thinkSRS.com ? www.thinkSRS.com