Subchapter B. ELECTRONIC DEVICES (RADAR)


Sec.


105.11.    [Reserved].
105.12.    [Reserved].
105.12a.     Application of subchapter.
105.13.    Operation of maintenance and calibration stations.
105.14.    Required equipment.
105.15.    Calibration and testing procedure.

Source

   The provisions of this Subchapter B amended through January 14, 1982, effective January 16, 1982, 12 Pa.B. 299, unless otherwise noted. Immediately preceding text appears at serial pages (56472) to (56477) and (56480) to (56482).

Notes of Decisions

   Since the former PennDot regulation, 67 Pa. Code §  337.25, classifying ESP Machine (utilizes two sensors taped across street, connected to processing and display unit, to measure vehicle speed) as an electrical or mechanical device, rather than electronic device, was an interpretive rather than legislative regulation, the Court was not bound thereby, the court concluded that the ESP Machine was an electronic device which could not be used by local police. Commonwealth v. DePasquale, 501 A.2d 626 (Pa. 1985).

§ 105.11. [Reserved].


Source

   The provisions of this §  105.11 adopted August 26, 1977, effective August 27, 1977, 7 Pa.B. 2422; amended November 9, 1979, effective November 10, 1979, 9 Pa.B. 3748; amended May 30, 1980, effective May 31, 1980, 10 Pa.B. 2162; republished and compiled August 1, 1980, effective August 2, 1980, 10 Pa.B. 3199; amended January 15, 1982, effective January 16, 1982, 12 Pa.B. 299; reserved March 30, 1984, effective March 31, 1984, 14 Pa.B. 1089. Immediately preceding text appears at serial pages (68566) to (68567).

§ 105.12. [Reserved].


Source

   The provisions of this §  105.12 adopted August 26, 1977, effective August 27, 1977, 7 Pa.B. 2422; amended December 1, 1978, effective December 2, 1978, 8 Pa.B. 3439; amended August 24, 1979, effective August 25, 1979, 9 Pa.B. 2893; republished and compiled August 1, 1980, effective August 2, 1980, 10 Pa.B. 3199; amended January 15, 1982, effective January 16, 1982, 12 Pa.B. 299; reserved March 30, 1984, effective March 31, 1984, 14 Pa.B. 1089. Immediately preceding text appears at serial page (68567).

§ 105.12a. Application of subchapter.

 This subchapter governs the calibration and testing of electronic devices—RADAR—for use only by members of the State Police, under 75 Pa.C.S. §  3368(c)(2) (relating to speed timing devices).

Source

   The provisions of this §  105.12a adopted February 17, 1989, effective February 18, 1989, 19 Pa.B. 640.

§ 105.13. Operation of maintenance and calibration stations.

 (a)  Maintenance and calibration. Maintenance and calibration of electronic devices shall be provided, as necessary, upon notice by the State Police.

 (b)  Hours. Stations for the maintenance and calibration of electronic devices shall be operated during a regular work week Monday through Friday during the hours of 8 a.m. to 5 p.m.

 (c)  Personnel. Every station for the maintenance and calibration of electronic devices shall employ on a full time basis:

   (1)  An electrical engineer.

   (2)  An associate engineer, or technician who possesses a valid FCC Radio Telephone or Radio Telegraph License—General, First or Second Class.

 (d)  Presumption of accuracy. Either the electrical engineer, associate engineer or technician shall be present at the time that the test is conducted. The certification that the electronic speed-timing device has been tested and found to be accurate shall create a presumption that the requirements of this subsection have been fulfilled. Adjustments and repairs shall be made in conformance with 47 CFR 90.433 (relating to operator requirements).

 (e)  [Reserved].

 (f)  Damage to or loss of device. The station for the maintenance and calibration of electronic devices is responsible for damages or losses of electronic devices while they are being serviced or calibrated.

Source

   The provisions of this §  105.13 adopted August 26, 1977, effective August 27, 1977, 7 Pa.B. 2422; amended December 30, 1977, effective December 31, 1977, 7 Pa.B. 2982; republished and compiled August 1, 1980, effective August 2, 1980, 10 Pa.B. 3199; amended January 15, 1982, effective January 16, 1982, 12 Pa.B. 299; readopted December 4, 1987, effective December 5, 1987, 17 Pa.B. 5051; amended February 17, 1989, effective February 18, 1989, 19 Pa.B. 640. Immediately preceding text appears at serial pages (122744) to (122745).

Notes of Decisions

   Commonwealth’s reliance solely upon certificate of accuracy and calibration to prove that speed-timing device had been approved by Department was insufficient to establish element of speeding offense. Commonwealth v. Kittelberger, 616 A.2d 1 (Pa. Super. 1992).

§ 105.14. Required equipment.

 The following equipment is required for the operation of a maintenance and calibration station. Suitable manufacturers and model numbers are listed, however, equivalent equipment or an alternative technique approved by the Communications Division, State Police is acceptable:

   (1)  Power supply—Hewlett Packard Model 6177C.

   (2)  Frequency counter—Hewlett Packard Model 5314A.

   (3)  Power Meter and Thermistor Mounts—Hewlett Packard Models 432A, X486A and K486A.

   (4)  Multimeter—Hewlett Packard Model 410C.

   (5)  AC Voltmeter—Hewlett Packard Model 400D or Leader Model LMV-181A.

   (6)  Function Generator—Hewlett Packard Model 3311A.

   (7)  Variable Attenuators—Hewlett Packard Models X382A and K382A.

   (8)  RF Absorption Chamber—See Appendix A, Figure 1.

   (9)  Frequency Counter—Hewlett Packard Models 5342A or 5343A.

   (10)  Calibrated Antennas—Narda Models 638 and 640.

   (11)  Coaxial Adapters—Narda Models 4601 and 4608B.

   (12)  Pin Diode Switch—General Microwave F9114.

   (13)  Microphone—Electrovoice 631A.

   (14)  4 Watt HF or VHF—AM Modulated Signal Source.

   (15)  Base Loaded Whip Antenna Tuned to paragraph (14).

Source

   The provisions of this §  105.14 adopted August 26, 1977, effective August 27, 1977, 7 Pa.B. 2422; republished and compiled August 1, 1980, effective August 2, 1980, 10 Pa.B. 3199; amended January 15, 1982, effective January 16, 1982, 12 Pa.B. 299; readopted December 4, 1987, effective December 5, 1987, 17 Pa.B. 5051; amended February 17, 1989, effective February 18, 1989, 19 Pa.B. 640. Immediately preceding text appears at serial pages (122745) to (122748).

§ 105.15. Calibration and testing procedure.

 (a)  General. An electronic device shall be calibrated and tested as follows:

   (1)  Power output. Relative power output shall be measured in the following manner:

     (i)   Adjust dc power supply to 13.6 vdc.

     (ii)   With equipment still connected as in Appendix A, Figure 2, position (1), position antenna system along each axis for maximum coupling. Simultaneously increase attenuation to avoid overloading the thermister amount.

     (iii)   Adjust microwave variable attenuator for maximum attenuation and then calibrate microwave power meter.

     (iv)   Reduce attenuation until microwave power meter reads 0 dB.

     (v)   Calculate power output taking into consideration the gain of the horn, and attenuation of the microwave variable attenuator, added algebraically with the power level indicated on the power meter.

 Example:
 Attenuator
 Power Meter Reading

 Gain of Horn
 Relative Power
 33.6 dB
  0.0 dB
 33.6 dB
-16.7 dB
 16.9 dB = 48.98 mW

   (2) Transmitted frequency. Transmitted frequency shall be measured in the following manner:

     (i)    Adjust variable dc power supply to 13.6 vdc.

     (ii)   With the equipment connected as in Appendix A, Figure 2, position (2) adjust the microwave variable attenuator for a stable readout on frequency counter.

     (iii)   Record transmitter frequency as indicated on the microwave frequency counter. Frequency shall be within .2% of licensed frequency.

     (iv)   Vary the applied voltage from 11 vdc to 14 vdc. Frequency shall remain within .2% of licensed frequency.

   (3)  Stability test. The stability test shall be conducted in the following manner:

     (i)   Adjust variable dc power supply to 13.6 vdc.

     (ii)   Connect equipment as in Appendix A, Figure 2, position (3).

     (iii)   Adjust square wave output of function generator to the switching level of the pin diode switch. While observing the frequency counter, adjust frequency of function generator to 1726 Hz (X-Band) or 3961 Hz (K-Band) or 5692 Hz (Ka-Band).

     (iv)   Vary applied dc voltage from 11 vdc to 14 vdc while observing indicated speed on device being tested. Indicated speed may not vary.

   (4)  Relative sensitivity. Relative sensitivity shall be measured in the following manner:

     (i)   Adjust variable dc power supply to 13.6 vdc.

     (ii)   Connect equipment as in Appendix A, Figure 2, position (3).

     (iii)   Adjust range control if applicable on electronic device for maximum range.

     (iv)   Adjust square wave output of function generator, to switching level of pin diode modulator. While observing frequency counter, adjust frequency of function generator so that device being tested indicates 55 mph.

     (v)   Slowly increase attenuation of microwave variable attenuator, until speed reading of 55 mph of device being tested becomes erratic.

     (vi)   Readjust position of device for maximum coupling.

     (vii)   Repeat steps in subparagraphs (v) and (vi) until no further increase is possible, without losing display. Maximum coupling is imperative.

     (viii)   Calculate relative sensitivity of device being tested, taking into consideration attenuation or gain of each component in the microwave path. The reflected signal passes through devices two times therefore values shall be multiplied by two.


Example:
Gain of Horn 16.7 dB x 2 +33.4 dB
Attenuation 33   dB x 2 -66   dB
Relative Sensitivity -32.6 dB

   (5) Accuracy test. The accuracy test shall be conducted in the following manner:

     (i)    Adjust variable dc power supply to 13.6 vdc.

     (ii)    Connect equipment as in Appendix A, Figure 2, position (3).

     (iii)   Adjust square wave output of function generator, to switching level of pin diode modulator. While observing frequency counter, adjust function generator for an indicated speed of 55 mph.

     (iv)   Adjust microwave variable attenuator and range control for stable display.

     (v)    While observing the frequency counter, adjust the function generator to each test frequency. Note and record the speed indicated on the electronic device display. Each test frequency shall produce the correct speed in mph within the limits of +0, -1 mph.

Test Frequencies (in Hz)

Indicated Test
X BandK BandKa BandSpeed mph
628 1440207020
785 1801258825
942 2161310530
10992521362235
12562881414040
14123241465745
15693601517550
17263961569255
18834321621060
20404681672765
21975042724670
23545402776275
25115762828180
26686122879785
28256482931690
29826842983295
3139720210351100
3296756210867105
3453792211385110
3610828311902115
3767864312420120
3924900312937125
4081936313455130
4238972313972135
43941008314490140


 

   (6)  Tuning fork test. The tuning fork test shall be conducted in the following manner:

     (i)   Connect the microphone, ac voltmeter and frequency counter as depicted in Appendix A, Figure 2.

     (ii)   Strike the tuning fork on a block of wood and hold the vibrating tuning fork close to the microphone.

     (iii)   Adjust the gain of the audio amplifier for a stable display on the frequency counter.

     (iv)   Note the displayed frequency on the frequency counter and convert it into miles per hour. The calculated speed shall be the same as that indicated on the tuning fork or within 1%. The tuning fork shall be at room temperature, or approximately 70° F., when this measurement is taken.

     (v)   Strike the tuning fork on a block of wood and hold it close to the device antenna. The indicated speed shall be stable, and shall be that of the tuning fork.

   (7)  Rejection of extraneous RF fields.

     (i)   Adjust variable dc power supply to 13.6 vdc.

     (ii)   Position the base loaded antenna 1 meter from the radar assembly.

     (iii)   Activate the 4 watt signal source, modulated at 100%, 1726 Hz (X-Band) or 3961 Hz (K-Band) or 5692 Hz (Ka-Band).

     (iv)   There may be no readout on the electronic device indicator, related to the extraneous RF field.

 (b)  Maintenance work-order. A maintenance work-order containing the following information shall be completed and forwarded to the Communications Division:

   (1)  Serial number of the electronic device.

   (2)  Work performed and date of same.

   (3)  Original complaint, if any.

   (4)  Actual repairs performed, if any.

   (5)  Amount of time taken to repair unit.

   (6)  Manufacturer’s stock number of all equipment replaced.

   (7)  Total labor cost.

   (8)  Individual part prices for all equipment replaced.

   (9)  The name and address, class, serial number and expiration date of the operator’s license of the individual conducting the test. The testing individual shall also sign and date the maintenance work order. Maintenance performed shall conform with FCC rules and regulations pertaining to radio location devices.

 (c)  Certificates of accuracy. These forms, provided by the Department, shall be filed for each electronic device calibrated and tested.

   (1)  Original shall be filed at the State Police station.

   (2)  One duplicate copy shall be retained by the maintenance and calibration station for at least 2 years.

   (3)  One duplicate copy shall be forwarded to the Communications Division, State Police.

   (4)  One duplicate copy shall accompany the electronic device.

   (5)  A duplicate copy, executed and signed in the same manner as the original, has the same force and effect as the original.

 (d)  Electronic device—radar—calibration. Technical data forms provided by the State Police Communications Division, shall be filed for each electronic device calibrated and tested.

   (1)  One original shall be forwarded to the Communications Division, State Police.

   (2)  One duplicate copy shall be retained by the maintenance and calibration station for at least 2 years.

   (3)  A duplicate copy, executed and signed in the same manner as the original, has the same force and effect as the original.

Source

   The provisions of this §  105.15 adopted August 26, 1977, effective August 27, 1977, 7 Pa.B. 2422; corrected September 2, 1977, effective August 27, 1977, 7 Pa.B. 2564; amended August 18, 1978, effective August 19, 1978, 8 Pa.B. 2310; amended August 18, 1978, effective August 19, 1978, 8 Pa.B. 2310; republished and compiled August 1, 1980, effective August 2, 1980, 10 Pa.B. 3199; amended January 15, 1982, effective January 16, 1982, 12 Pa.B. 299; amended June 18, 1982, effective June 19, 1982, 12 Pa.B. 1875; corrected June 29, 1984, effective January 16, 1982, 14 Pa.B. 2267; readopted December 4, 1987, effective December 5, 1987, 17 Pa.B. 5051; amended February 17, 1989, effective February 18, 1989, 19 Pa.B. 640; amended July 31, 1998, effective August 1, 1998, 28 Pa.B. 3588. Immediately preceding text appears at serial pages (218210) to (218214).


No part of the information on this site may be reproduced for profit or sold for profit.

This material has been drawn directly from the official Pennsylvania Code full text database. Due to the limitations of HTML or differences in display capabilities of different browsers, this version may differ slightly from the official printed version.