RPP2 The RPP2 Series of programmable square wave pulser preamplifiers adds power, performance and versatility to the RPP family of front-end electronics for the upi-50 ultrasonic instrument. RPP4 Four-channel square-wave pulser preamplifier for superior near-surface resolution, penetration power, and ultrasonic signal-to-noise LAM4 Wideband programmable logarithmic amplifier with unrivaled bandwidth and extended dynamic range RPP2 PRODUDCT DESCRIPTION Introducing RPP2 The RPP2 Series of programmable square wave pulser preamplifiers adds power, performance and versatility to the RPP family of front-end electronics for the upi-50 ultrasonic instrument. Architecture RPP2 is based on the modular architecture established with the RPP1 Series of spike pulser preamplifiers, including full programmability of all functions, plug-in or remote installation, and exceptional low-noise operation. New features The RPP2 Series adds the advantages of square wave tuned pulse excitation, combined with improved near-surface resolution, multiple pulse excitation (tone bursts) for higher penetration power, and an optional interface for wideband logarithmic signal amplification with an exceptional dynamic range. Models Three models of the RPP2 Series are available. RPP2 HR provides very short pulse excitation rise and fall times for enhanced near-surface resolution. RPP2 HV is intended for those applications requiring a higher excitation voltage for enhanced penetration power. RPP2 LF is a low-frequency version for inspection of lossy materials. Enclosure RPP2 is supplied in a RF-sealed enclosure which occupies a single-channel slot of the upi-50 instrument or remote-installed Octaport expansion box. Programmability ll pulser and preamplifier parameters are fully programmable from the ScanMaster upi-50 operator interface. Number of channels Up to four independent RPP2 pulser preamplifiers can be installed on-board the upi-50 ultrasonic instrument in a four or six-channel configuration. Up to eight independent channels can be installed using an external Octaport enclosure. Remote operation Singly or in the Octaport enclosure, the RPP2 or RPP2-LAM4 can be operated at distances to 50 meters (150ft) from the upi-50 instrument. Installation of up to eight channels in a remotely located Octaport requires only one RF cable and one COMM cable for operation. DynaClamp Main bang pulse clamping for minimal trailing resonance and enhanced near-surface resolution. Overpower protection ScanMaster software limiting of continuous power output to protect transducers and electronics. Multi-pulse transducer excitation Tunable tone bursts of up to four pulses for enhanced signal amplitude. Advanced operating modes Selection of standard (Pulse-Echo/Through-Transmission) or advanced (Fire Twice/Fire Next) firing modes for multi-channel, multi-transducer applications. TECHNICAL SPECIFICATION (All measurements at 50 W Load)

Model	HR (High-resolution)	HV (High-voltage)	LF (Low frequency)
Pulser
Single pulse width [ns]	15 - 500 (± 3% or 3ns)	50 - 640 (± 3% or 5ns)	50 - 640 (± 3% or 5ns)
Burst pulse width [ns]	80 - 500 (± 3% or 3ns)	80 - 500 (± 3% or 3ns)	80 - 640 (± 3% or 5ns)
Pulse width [steps]	255	255	255
Amplitude levels	1-8	1-8	1-8
Damping levels	1-8	1-8	1-8
Pulse rise time (10 - 80%) [ns]	< 8 (for amplitude levels 1-7)	< 32 (for amplitude levels 1-6)	< 32 (for amplitude levels 1-6)
Pulse fall time (80 - 10%) [ns]	< 8 (for amplitude levels 2-8)	< 25 (for amplitude levels 1-6)	< 25 (for amplitude levels 1-6)
Maximum pulse amplitude [V]	275±10 (pulse width > 50 ns)	450±20 (pulse width > 100ns)	450±20 (pulse width > 100ns)
Amplitude variation with PRF [%]	< ± 4 (PRF 2-5000Hz)	< ± 4	< ± 4
Amplitude stability at constant temp. [%]	< ± 2	< ± 2	< ± 2
Number of pulses in burst mode	2 - 4	2 - 4	2 - 4
Maximum peak pulse power [KW]	1.5	4	4
Maximum average pulse power [W]	0.8, software limited	0.8, software limited	0.8, software limited
PRF range [Hz]	2 - 5,000	2 - 1,000	2 - 1,000
Preamplifier
Amplifier	Linear	Linear	Linear
steps [dB]	0, 12, 25, 42 (±1)	0, 12, 25, 42 (±1)	0, 12, 25, 42 (±1)
Bandwidth, -3dB [MHz]	1 - 35	1 - 35	1 - 35
rms equivalent input noise [nV/(Hz]	< 4	< 4	< 4
Pulser/preamplifier isolation @5MHz [dB]	> 60	> 60	> 60
Output swing [Vp-p]	2	2	2
Output impedance [W]	50	50	50

RPP4 PRODUDCT DESCRIPTION Introducing RPP4 The RPP4 Series of square wave pulser preamplifiers adds fully programmable, multi-channel capability to the RPP family in a compact RF-sealed enclosure, occupying a single-channel slot in the upi-50 ultrasonic instrument. Architecture RPP4 is based on the modular architecture established with the RPP2 Series of square-wave pulser preamplifiers, including programmability of all functions, plug-in or remote installation, and exceptional low-noise operation. Number of channels per unit Operator-selectable four independent channels for pulse-echo operation, two channels for thru-transmission applications. Number of channels per instrument One to four RPP4 pulser preamplifiers can be installed on-board the upi-50 ultrasonic instrument, for a maximum of eight channels in pulse-echo and thru-transmission modes. Programmability All pulser and preamplifier parameters are fully programmable from the ScanMaster upi-50 operator interface. Remote operation The RPP4 can be operated in a fully-programmable mode at distances to 100 meters (300ft) from the upi-50 instrument. DynaClamp Main bang pulse clamping for minimal trailing resonance and enhanced near-surface resolution. Overpower protection ScanMaster software limiting of continuous power output to protect transducers and electronics. Advanced operating modes Arbitrary pulser and receiver sequencing, with up to two shots per pulser, for advanced multi-channel, multi-transducer applications. TECHNICAL SPECIFICATION (All measurements at 50 W Load) Pulser Pulse width @50% amplitude pike: 15ns; square wave: 50-500ns (±3% or 3ns) Pulse width increments 25ns (±1ns) Maximum pulse amplitude 300V (+10V-20V) Amplitude levels 3 (equal for all 4 channels in one unit) Amplitude variation with PRF < ± 5 % (PRF 2-2000Hz) Amplitude stability < ± 2% (at constant temperature) Pulse rise time (10-90%) < 13ns (for maximum amplitude) Pulse fall time (90-10%) < 13ns (for maximum amplitude) Max. peak pulse power 1.5KW Max. average pulse power 0.8W, software controlled PFR range 2-5,000Hz Preamplifier Amplifier Linear Gain steps 0, 15, 30, 45 dB (±2dB) Bandwidth, -3dB 1 - 35 MHz Equivalent input noise (rms) < 4 nV/ Hz Channel isolation > 60dB at 5MHz Output swing 2V p-p Output impedance 50 W General Channel sequencing Set by operator Max. power consumption 10W Supply voltage + 12V ± 10%, 0.8 A max Size 170x82x32mm / 6.7x3.2x1.3 inch Weight < 0.45Kg / 1lb Display LED's Fire, channel Enclosure protection IP 42 Operating temperature range 0-45oC / 32-110oF Connectors: XMT, front panel (+4) BNC, socket RF OUT, rear panel BNC, socket RF IN, rear panel Lemo 00, socket Communication, rear panel D 9, plug

LAM4 PRODUDCT DESCRIPTION Introducing LAM4 LAM4 adds a new dimension to the front-end performance capabilities of the upi-50 ultrasonic instrument. Based on the modular single-slot in architecture pioneered by the LAM2 logarithmic amplifier, LAM4 offers a wider signal bandwidth, increased dynamic range and exceptional ultrasonic signal-to-noise. Required hardware platform LAM4 is intended for use with the upi-50 ultrasonic instrument equipped with a RPP2 square-wave pulser. Programmable features Three-level signal prescaler, 64dB input attenuator, 4 input filters for improved S/N, switchable log to linear preamplification. Multi-channel operation Up to two RPP2-LAM4 channels on-board. Up to eight in an Octaport expansion box. ScanMaster user interface All log amplifier parameters are fully programmable from the ScanMaster operator interface. Exceptional low noise More than 80db of usable log-linear dynamic range. Typical applications Through-transmission C-scan inspection of varying-section composites. Pulse-echo and through-transmission C-scan imaging of large forged discs and shafts. Manual inspection of large forged and cast parts. TECHNICAL SPECIFICATION Logarithmic preamplifier Input attenuation 0-62dB ±0.5dB, in 0.5 steps Input filters1, center (-3 dB) 2(0.85 - 4.2), 5( 3.7 - 6.7), 7.5(4.6- 11) MHz Input filter, wideband (-3 dB) 0.85 - 6.5 MHz Prescaler gain -12, 0, 12 dB Linearity, 0 to 75 dB gain ±1.5 dB Linearity, 0 to 82 dB gain ±2 dB Active range 82 dB Output voltage swing, 50W load 1 Vp-p Video output swing, 50W load 0.4 Vp-p2 Output impedance 50 W Noise w.r.t. 1V input (WB filter) < -80dB @ 0 dB gain General Weight 0.5Kg / 1.1lb Supply voltage ±12 V± 10% Power consumption < 5 W Dimensions 156 x 82 x 32mm / 6.1 x 3.2 x 1.3 in Display LEDS Power ON, Active Connectors Signal in BNC (front panel) RF out BNC (rear panel) RF Multiplexer IN LEMO 00 (rear panel) Video Out 2 LEMO 00 (front panel) Comm D 25 (rear panel) 1Contact factory for customied filter ranges. 2Optional on special request