Minimum Specifications.pdf

NEXT GEN SIGNAL CHANNEL AMPLIFIER REQUIREMENTS 6/17/2024

A3111

NEXT GENERATION SINGLE CHANNEL

AMPLIFIER REQUIREMENTS

CONTROLLED BY: DEPARTMENT OF THE NAVY

CONTROLLED BY: NSWCCD CODE 732

CUI CATEGORY (IES): N/A

LIMITED DISTRIBUTION CONTROL: N/A

DOC. NUMBER: NSWC732-EE-0011-0001-0000

DOC. CREATOR: CDC

1. Physical/thermal Requirements:

1.1. All of the amplifier inputs/outputs and indicators LEDs SHALL be labeled.

1.2. The amplifier SHALL have the serial number, revision number and NSWC logo on the front plate.

1.3. All labels SHALL be legible at a minimum of one (1) foot away.

1.4. The amplifier SHALL have two (2) handles on the front plate.

1.5. The front plate SHALL provide physical protection to the connectors/ indicators/ controls and other accessories.

1.6. The amplifier SHALL provide physical protection around the switches to avoid accidental movement.

1.7. The amplifier SHALL have rubber feet on the bottom plate and back plate.

1.8. The amplifier SHALL have a main circuit breaker in line with the VAC power in.

1.9. The amplifier SHALL fit inside a 21.65inches x 21.65inches x 8.66inches metal box

1.10. The amplifier SHALL use the Zarges K470-40849 or equivalent metal box/enclosure with foam protection as needed.

1.11. The amplifier SHALL NOT weight more than 46 lbs.

1.12. The amplifier SHALL work over the temperature range of 0◦C to +40◦C

1.13. The amplifier SHALL have a storage temperature range of -40◦C to +85◦C.

1.14. Any window on the amplifier SHALL have an EMI mesh filter screen.

1.15. The fan outlet SHALL be drip proof when standing on narrow base.

1.16. The fan outlet SHALL have a guard to avoid contact with the blade.

2. AC Power Requirements:

2.1. The amplifier SHALL work with a single phase input voltage range of 120V +/-10 at 50 to 60Hz.

2.2. The amplifier SHALL use a single switching power transformer to power up all the internal circuitry.

2.3. The amplifier SHALL have an IEC320-C14 3-pin, AC power input receptacle.

2.4. The amplifier power input SHALL provide EMI filtering.

2.5. The amplifier SHALL have the AC connector mounted on the front plate.

2.6. The amplifier AC connector SHALL use an inline fuse.

2.7. All connectors, LEDs, switches SHALL be on the front plate of the amp.

3. General Requirements:

3.1. The amplifier SHALL be a linear, solid state and Class AB.

3.2. The amplifier SHALL have single TX channel.

3.3. The amplifier SHALL have dual RX channel.

3.4. Them amplifier SHALL use a single I/O connector MS3102E10SL-3P

3.5. The amplifier MS3102E10SL connector SHALL use pin A for the Low Frequency (LF) Element 13

KHz to 17 KHz.

3.6. The amplifier MS3102E10SL connector SHALL use pin B for the High Frequency (HF) Element 63

KHz to 67 KHz.

3.7. The amplifier MS3102E10SL connector SHALL use pin C as the common GND of both elements.

3.8. The amplifier MS3102E10SL connector Pin C SHALL be tied to chassis ground.

4. TX/RX Requirements:

4.1. The amplifier SHALL allow the selection of either HF or LF element as the TX or RX.

4.2. The amplifier TX bandwidth SHALL be 90 KHz.

4.3. The amplifier SHALL use solid state relays to minimize the noise produced during the switch from TX to RX or vice versa.

4.4. The amplifier SHALL have a frequency range from 10 KHz to 100 KHz.

4.5. The amplifier SHALL take two TTL control signals to set the elements to TX or RX mode.

Control-A Control-B Low Freq High Freq 0 0 Listening Listening 0 1 Listening Transmitting 1 0 Transmitting Listening 1 1 not allowed not allowed

Table 1: shows the pinger element function based on the control signal states.

4.6. The amplifier SHALL take a secondary TTL enable signal to output the TX signal to the element.

4.7. The amplifier SHALL shutdown the RX path when one of the elements is in transmitting.

4.8. The amplifier SHALL have LEDs to show in which mode each of the pinger elements is on.

4.9. The amplifier TX SHALL have a Total Harmonic Distortion less than of 2% across the 10 KHz to

100 KHz frequency range.

4.10. The amplifier RX/TX paths SHALL have an output signal to noise ratio (SNR) of at least

90dB when the output gate is ON, in a voltage source configuration and in pulse mode.

4.11. The amplifier channels SHALL have an output signal to noise ratio (SNR) of at least

130dB when the output gate is OFF, in a voltage source configuration and in pulse mode.

4.12. The resting position of the control signals on the amplifier SHALL set both elements HF and LF to RX mode.

4.13. The input impedance of the TX/RX port SHALL be at least 10K ohms +/- 2%.

4.14. When the TX output SHALL be center tapped and Collector loaded.

4.15. In continuous mode the amplifier TX channel SHALL be able to hold the signal-out at

60AV

4.16. In pulsed mode the amplifier channel SHALL be able to hold the signal-out at 650AV with a duty cycle of 10% and pulse width of 100mSec.

4.17. The amplifier TX port SHALL be able to drive reactive, resistive, capacitive or inductive loads.

4.18. The amplifier TX/RX port SHALL have output over-current, over-voltage and over-temperature protection.

4.19. The amplifier TX path SHALL have input over-current, over-voltage protection.

4.20. The amplifier TX path SHALL be configurable as a voltage source.

4.21. The amplifier SHALL have a latching toggle switch to enable and disable the TX.

4.22. The enable switch SHALL have physical barriers to prevent accidental movements.

4.23. The amplifier SHALL support an input drive signal of ±10V.

4.24. The RX path SHALL have a gain of 1000.

5. Output Monitor Ports:

5.1. The amplifier SHALL have one (1) BNC connector, to monitor the analog output voltage at a scale of 10mV/V with a tolerance of +/- 2%.

5.2. The amplifier SHALL have one (1) BNC connectors, to monitor the analog output current at a scale of 100mV/A with a tolerance of +/- 2%.

5.3. The BNC for voltage and current monitoring SHALL be 50 ohms impedance matched.

6. LED Indicators:

6.1. All LED indicators SHALL be labeled according to their function.

6.2. All discrete LEDs SHALL have a visibility not less than 120◦.

6.3. All discrete LED indicators SHALL be visible on daylight.

6.4. All bar graph display LEDs SHALL be visible when the user is facing the amplifier.

7. LED Indicators – Bar Graph Display

7.1. The amplifier SHALL have two (2) LED bar graph displays composed of ten (10) LEDs each. One

(1) to monitor current out and one (1) to monitor voltage out.

7.2. The LED bar graph display SHALL be logarithmic divided in ten (10) LED segments of 3dBs per

LED.

7.3. The LED bar graph display SHALL position LED1 at the bottom and LED10 at the top.

7.4. The LED bar graph display SHALL use green LEDs in positions one (1) to seven (7), yellow/amber

LEDs in positions eight (8) and nine (9) and a red LED in position ten (10).

8. LED Indicators – Discrete LED

8.1. The amplifier SHALL have a green LED that asserts when main VDC is applied.

8.2. The amplifier SHALL have a red LED that asserts when the main fuse is blown.

8.3. The amplifier SHALL have one (1) amber LED that assert once the output voltage limit has been reached.

8.4. The amplifier SHALL have one (1) amber LED that asserts once the output current limit has been reached.

8.5. The amplifier SHALL have one red LED that asserts when the Temperature limit has been reached.

9. I/O Signal Connector:

9.1. The amplifier SHALL use a single nineteen (19) position connector KPSE02E 14-19P to communicate with the computer.

9.2. I/O signals SHALL be 5V +/- 0.2V and source at least 15mA.

9.3. All I/O signals SHALL be ESD protected.

9.4. All I/O signals SHALL be buffered.

9.5. The pin assignment SHALL be as follows:

Pin number

Signal Type Comments

SIGNAL TX

GND

SIGNAL-A RX

GND

SIGNAL-B RX

GND

CH1 TEMP/FUSE FAULT

CH1 V/I LIMIT FAULT

RX-TX CONTROL A

GND

RX-TX CONTROL B

GND

CH1 A-VOLTAGE MON HI

CH1 A-CURRENT MON HI

TX-ENABLE

GND

Note: the pins/signals on this connector have not been assigned on purpose to the Instruments Inc.

make the necessary adjustment to pair the extra signals and their design. Our only request is to keep as much backwards compatibility with the L2x-P as possible to avoid modifying our cables but if some signals must be paired together and use ground shielding the designer should be in control of that.