Attachment1_ CSS_Dec-2021.pdf

CALIBRATION STANDARD SPECIFICATION

PULSED RF CALIBRATION

SOURCE

DEPARTMENT OF THE NAVY

METROLOGY AND CALIBRATION PROGRAM

CSS 0010

DECEMBER 2021

DISTRIBUTION STATEMENT A. APPROVED FOR PUBLIC RELEASE, DISTRIBUTION IS UNLIMITED.

CALIBRATION STANDARD SPECIFICATION

PULSED RF CALIBRATION

SOURCE

Prepared by:

Alexander Dymek Project Engineer

DEPARTMENT OF THE NAVY

METROLOGY AND CALIBRATION PROGRAM

Table of Contents

1.0 Scope

1.1 General

1.2 Usage

2.0 Requirements

2.1 Performance

2.1.1 Environmental Requirements

2.1.1.1 Laboratory Temperature

2.1.1.2 Laboratory Humidity

2.1.2 TACAN Pulses

2.1.2.1 TACAN Output Frequency

2.1.2.2 TACAN Power Level

2.1.2.3 TACAN Pulse Per Group

2.1.2.4 TACAN Pulse Width

2.1.2.5 TACAN Pulse Spacing

2.1.2.6 TACAN Pulse Rise Time

2.1.2.7 TACAN Pulse Fall Time

2.1.2.8 TACAN Pulse Repetition Frequency

2.1.2.9 TACAN Internal Sync

2.1.3 High Power IFF Pulses

2.1.3.1 High Power IFF Frequency

2.1.3.2 High Power IFF Power Level

2.1.3.3 High Power IFF Pulse Per Group

2.1.3.4 High Power IFF Pulse Width

2.1.3.5 High Power IFF Pulse Spacing

2.1.3.6 High Power IFF Pulse Rise Time

2.1.3.7 High Power IFF Pulse Fall Time

2.1.3.8 High Power IFF Pulse Repetition Frequency

2.1.3.9 High Power IFF Pulse Internal Sync

2.1.4 Low Power IFF Pulses

2.1.4.1 Low Power IFF Frequency

2.1.4.2 Low Power IFF P1/P3 Power Level

2.1.4.3 Low Power IFF SLS Power Level

2.1.4.4 Low Power IFF P1/P3 Pulse Per Group

2.1.4.5 Low Power IFF SLS Pulse Per Group

2.1.4.6 Low Power IFF Pulse Width

2.1.4.7 Low Power IFF P1/P3 Pulse Spacing

2.1.4.8 Low Power IFF SLS Pulse Spacing

2.1.4.9 Low Power IFF Pulse Rise Time

2.1.4.10 Low Power IFF Pulse Fall Time

2.1.4.11 Low Power IFF Pulse Repetition Frequency

2.1.4.12 Low Power IFF Pulse Internal Sync

2.1.5 Triggering and Timing Signals

2.1.5.1 Synchronizing Output

2.1.5.2 Synchronizing Input

2.1.5.3 Pulse Delay

1.0 SCOPE

1.1 General. This document specifies the minimum requirements for a Pulsed RF Calibration Source. This equipment is intended for use by Navy personnel in shipboard and shore-based laboratories and by other DOD personnel in secondary calibration laboratories, to calibrate Tactical Navigation (TACAN) test sets and Identification, Friend or Foe (IFF) interrogator test sets. For the purpose of this specification, the IFF and TACAN test set calibrator shall be referred to as the

ITTSC.

1.2 Usage. The ITTSC covered by this CSS is intended for use in testing and calibrating systems in the controlled environments in which Military test equipment is operated.

The ITTSC will be used by civilian and Uniformed Navy Personnel, in shore-based laboratories and aboard Land, Sea and Air Vehicles, The requirements of this CSS are tailored to the intended use of the equipment.

2.0 REQUIREMENTS

2.1 Performance. Performance requirements for the ITTSC shall be in accordance with the sub-paragraphs below.

2.1.1 Environmental Requirements. The temperature ranges and humidity limits for both the operating and non-operating conditions are as follows:

2.1.1.1 Laboratory Temperature. Equipment shall be able to perform at its specified requirements at a temperature between 17.5 and 28⁰C.

2.1.1.2 Laboratory Humidity. Equipment shall be able to perform at its specified requirements at a relative humidity of 20 to 60%.

2.1.2 TACAN Pulses. The ITTSC shall meet the following specifications for generating TACAN pulses:

2.1.2.1 TACAN Output Frequency. The output frequency shall be selectable from 962 to 1213 MHz, with a minimum resolution of 0.1 MHz.

2.1.2.2 TACAN Power Level. The power level shall be selectable from 40 dBm to

63.5 dBm, with a minimum resolution of 0.1 dB.

2.1.2.3 TACAN Pulse Per Group. The number of TACAN pulses per group shall be selectable between 1 or 2 pulses.

2.1.2.4 TACAN Pulse Width. The pulse width, which is measured at 50% of pulse amplitude, shall be 3.5 µs ± 0.5 µs, with a minimum resolution of 0.05 µs.

2.1.2.5 TACAN Pulse Spacing. The pulse spacing shall be selectable from 8 µs to 40 µs, with a minimum resolution of 0.5 µs.

2.1.2.6 TACAN Pulse Rise Time. The time required for the leading edge of the pulse to rise from 10 to 90 percent of its pulse amplitude shall be 2.0 ± 0.25 µsec.

2.1.2.7 TACAN Pulse Fall Time. The time required for the trailing edge of the pulse to fall from 90 to 10 percent of its pulse amplitude shall be ≤ 3.0 µsec.

2.1.2.8 TACAN Pulse Repetition Frequency. Shall be variable from 60 to 150 Hz (single pulse mode) or pulse pairs per second, with a minimum resolution of 5 Hz.

2.1.2.9 TACAN Internal Sync. Shall be variable from 60 to 150 Hz (single pulse mode) or pulse pairs per second, with a minimum resolution of 5 Hz.

2.1.3 High Power IFF Pulses. The ITTSC shall meet the following specifications for generating High Power IFF pulses:

2.1.3.1 High Power IFF Frequency. The output frequency shall be selectable at 1030 MHz and 1090 MHz, with a minimum resolution of 0.1 MHz.

2.1.3.2 High Power IFF Power Level. The power level shall be selectable from 40 dBm to 63 dBm, with a minimum resolution of 0.1 dB.

2.1.3.3 High Power IFF Pulse Per Group. The number of pulses per group shall be 2.

2.1.3.4 High Power IFF Pulse Width. The pulse width shall be selectable from 450 ns to 1 µs, with a minimum resolution of 0.05 µs.

2.1.3.5 High Power IFF Pulse Spacing. The pulse spacing shall be selectable from 5 µs to 20.3 µs, with a minimum resolution of 0.05 µs.

2.1.3.6 High Power IFF Pulse Rise Time. The time required for the leading edge of the pulse to rise from 10 to 90 percent of its pulse amplitude shall be between

0.05 µs to 0.1 µs.

2.1.3.7 High Power IFF Pulse Fall Time. The time required for the trailing edge of the pulse to fall from 90 to 10 percent of its pulse amplitude shall be between 0.05 µs to 0.2 µs.

2.1.3.8 High Power IFF Pulse Repetition Frequency. Shall be 150 Hz.

2.1.3.9 High Power IFF Pulse Internal Sync. Shall be 150 Hz.

2.1.4 Low Power IFF Pulses. The ITTSC shall meet the following specifications for generating Low Power IFF pulses:

2.1.4.1 Low Power IFF Frequency. The output frequency shall be selectable from 1024 MHz to 1036 MHz with a minimum resolution of 0.1 MHz.

2.1.4.2 Low Power IFF P1/P3 Power Level. The P1/P3 power level shall be selectable at 15 dBm, with a minimum resolution of 0.25 dB.

2.1.4.3 Low Power IFF SLS Power Level. The SLS power level shall be selectable from 5 dBm to 17 dBm, with a minimum resolution of 0.25 dB.

2.1.4.4 Low Power IFF P1/P3 Pulse Per Group. The number of pulses per group shall be 2.

2.1.4.5 Low Power IFF SLS Pulse Per Group. The number of pulses per group shall be 1.

2.1.4.6 Low Power IFF Pulse Width. Both the P1/P3 and SLS pulse width shall be selectable at 0.8 µs, with a minimum resolution of 0.05 µs.

2.1.4.7 Low Power IFF P1/P3 Pulse Spacing. The P1/P3 pulse spacing shall be selectable at 5 µs, with a minimum resolution of 0.05 µs.

2.1.4.8 Low Power IFF SLS Pulse Spacing. The SLS pulse spacing (measured after P1) shall be selectable at 2 µs after P1 pulse, with a minimum resolution of

0.05 µs.

2.1.4.9 Low Power IFF Pulse Rise Time. The time required for the leading edge of the pulse to rise from 10 to 90 percent of its pulse amplitude shall be less than 0.1 µs.

2.1.4.10 Low Power IFF Pulse Fall Time. The time required for the trailing edge of the pulse to fall from 90 to 10 percent of its pulse amplitude shall be less than 0.2 µs.

2.1.4.11 Low Power IFF Pulse Repetition Frequency. Shall be 150 Hz.

2.1.4.12 Low Power IFF Pulse Internal Sync. Shall be 150 Hz.

2.1.5 Triggering and Timing Signals. The ITTSC shall meet the following specifications for generating triggering/timing signals:

2.1.5.1 Synchronizing Output. A synchronizing output pulse shall be provided on a front or rear panel BNC connector.

2.1.5.2 Synchronizing Input. The equipment PRF shall be capable of being controlled by an external trigger.

2.1.5.3 Pulse Delay. All TACAN and IFF signals shall be delayed from the internal or external synchronizing pulse, whichever is in use. The delay shall be selectable from a fixed delay of 10 to 62 µs, with a minimum resolution of 0.1 µs.