DPR500 Remote Pulsers

JSR Ultrasonics remote pulsers offer performance advantages in high frequency applications. Remote pulsers include a preamplifier to immediately amplify received signals. Positioning the Remote Pulser adjacent to a transducer enables the use of a short transducer cable to minimize both cable reflections and high frequency signal attenuation. The remote pulser and transducer can also be positioned far from the main DPR500 Receiver unit without degrading the performance of scanning systems and systems with low signal levels.

Greater Flexibility

Interchangeable remote pulsers provide maximal system configurability in DPR500-based systems by allowing the system to handle a number of different tasks. Changing the system configuration is as straightforward as changing the remote pulser. Interchangeable remote pulsers also allow the user to optimize a system by selecting the pulser that best drives a transducer.

Selecting a Pulser and Cables

Selecting a remote pulser for your application is straightforward; the center frequency of your ultrasound transducer defines the L, H, or U pulser family. From within that family, select the remote pulser model whose performance characteristics (Pulse Amplitude, Pulse Width, Pulse Energy, Preamplifier gain and Bandwidth) best match your transducer as described in the Pulser Model characteristic charts below.

In addition to the Remote Pulser, you can select a Remote pulser connection cable from the listing below, and from the 'Pulser-Receiver Accessories' page select a Transducer Connection Cable.

Remote Pulser Models -- Pulser Characteristics

Model	Fall time Maximum(ns)	Pulse Width (FWHM) Typical (ns)	Pulse Amplitude Min (V)	Energy Settings	Pulse Energy Max (µJ)	Maximum PRF (kHz)	Pulser DC Supply Voltage (V)	Damping Values (Ohms)
RP-L2	8	125	-155	Low/High	316.2	5	275-500	330, 104, 44, 34
RP-H2	2.6	6.5	-185	Low/High	11.7	10(High Energy) 20(Low Energy)	330-400	100, 50, 33, 25
RP-H4	2.6	6.5	-170	Low/High	10.6	10(High Energy) 50(Low Energy)	330-380	100, 50, 33, 25
RP-U2	1.1	1.4	-230	Low/High	8.0	20	143	100, 50, 21, 17
RP-U4	1.1	1.4	-220	Low/High	8.0	50	143-155	100, 50, 21, 17
RP-U5	1.1	1.6	-40	Low	2.5	50	138-145	100, 50, 23, 19

Remote Pulser Models -- Preamplifier Characteristics

Model	Modes	Gain (dB)	-3 dB Highpass Cutoff Minimum (MHz)	Recommended Transducer Center Frequencies (MHz)	-3 dB Lowpass Cutoff Minimum (MHz)	Spot Noise Value (nV/Sq Rt Hz)
RP-L2	Echo or Through	6 @ 10 MHz	200 (Hz)	1 to 65	90	3.6
RP-H2	Echo or Through	6 @ 100 MHz	0.016	40 to 165	260	3.3
RP-H4	Echo or Through	6 @ 100 MHz	0.016	40 to 165	260	3.3
RP-U2	Echo	6 @ 100 MHz	0.016	100 to 250	260
RP-U4	Echo	6 @ 150 MHz	40	100 to 250	295	3.9
RP-U5	Echo	12 @ 250 MHz	40	100 to 300	375	3.0

Remote Pulser Models - RF Connectors

Model	Connectors	Dimensions L x W x H (mm)	Weight(kg)	Approvals
All models (except RP-U5)	SMA	81.3 x 50.8 x 30.0	0.15	CE, CSA
RP-U5	SMC	81.3 x 50.8 x 30.0	0.15	CE, CSA

Remote Pulser Cables (for connecting Remote Pulsers to the DPR500 Receiver Unit)

Working Cables are used to connect Remote Pulsers to DPR500 receiver units (one working cable is required for each DPR500 receiver channel). Working cables are designed to be flexible for use with mechanical translation stages, and are available in the following lengths:

CBL-201, Length 0.60 m
CBL-200, Length 0.75 m
CBL-205, Length 1.00 m
CBL-202, Length 1.83 m
CBL-203, Length 3.05 m
CBL-204, Length 3.35 m
CBL-206, Length 7.00 m

Extension Cables are intended to be permanently installed in metrology systems as extensions for the Working Cables listed above. Extension Cables will not mate directly with a Remote Pulser and must be paired with a Working Cable. Extension Cables are available in the following lengths.

CBL-254, Length 0.60 m
CBL-251, Length 3.00 m
CBL-250, Length 4.00 m
CBL-253, Length 5.00 m