Specifications

EMC-CS-2009.1
© Copyright Ford Motor Company – All Rights Reserved Page 36 of 121
February 11, 2010
11.5 Requirements: 400 – 3100 MHz: RI 114
The device shall operate as specified in Table 11-1 when exposed to RF electromagnetic fields as delineated in Table 11-3.
Table 11-3: RI 114 Requirements ( 400 – 3100 MHz )
Band
Frequency Range
(MHz)
Level 1
(V/m)
Level 2
(V/m)
Modulation
4 400 - 800 50 100
CW, AM 80%
Pulsed PRR= 18 Hz, PD= 28 msec
(1)
5 800 - 2000 50 70 CW, Pulsed PRR= 217 Hz, PD=0.57 msec
6 1200 - 1400 n/a
300
600
(2)
7 2700 – 3100 n/a
300
600
(2)
Pulsed PRR= 300 Hz, PD = 3 usec,
(3)
with only 50 pulses output every 1 sec.
(1,2)
1. Pulse Modulation limited to 400 – 470 MHz
2. 600 V/m requirements are only applicable to selected components associated with supplemental restraints
system including frontal crash sensors. Contact FMC EMC department for specific applicability
3. Pulse duration (PD) shall be extended to 6 usec when testing using the reverberation (mode tuned) method.
See 11.4.2.2 for additional detail.
11.5.1 Test Verification and Test Setup
Verification of device performance shall be in accordance with either the following methods:
• ALSE Method (ISO 11452-2) except where noted in this specification. The tests is similar to that used for radiated
emissions testing (see section 7.2).
• Reverberation, (Mode Tuned) Method (IEC 61000-4-21) except where noted in this specification.
11.5.1.1 ALSE Method (Bands 4 and 5)
• The DUT and any electronic hardware in the Load Simulator shall be powered from an automotive battery (see
paragraph 4.5.4 for requirements). The battery negative terminal shall be connected to the ground plane bench. The
battery may be located on, or under the test bench. The standard test setup illustrated in Annex G shall be used for the
Load Simulator, battery and Artificial Networks.
• For frequencies ≤ 1000 MHz, the field-generating antenna shall be positioned in front of the middle of the harness.
For frequencies above 1000 MHz, the antenna shall be moved 750 mm parallel to the front edge of the ground plane
towards the DUT. The center of the antenna shall be pointed directly at the DUT instead of the center of the wiring
harness (See Figure 11-3). Calibration procedures shall be performed in accordance with ISO 11452-2.
• Location of the DUT and Load Simulator requires that the harness shall be identical to that used for RE 310.