4.3.3 DUT positioning for Speech Mode with beside the Head and Hand Phantom

37.5443GPPConformance testingRelease 16TSUniversal Terrestrial Radio Access (UTRA) and Evolved UTRA (E-UTRA)User Equipment (UE) Over The Air (OTA) performance

4.3.3.1 General

The positioning specified in this clause is used for the tests cases titled as tests for Speech Mode with beside the Head and Hand Phantom. The characteristics of the Head and Hand Phantoms are specified in Annexes A.2.1 and A.2.2.

Speech mode is simulation of a voice call user case. DUT is placed in to a hand phantom, which is holding the DUT against the SAM head phantom. Positioning of the DUT in the hand phantom varies with the grip being used. Positioning of the DUT against the head phantom is identical to Subclause 4.3.2 with the exception that 6°tilt angle from the cheek is being used instead of having direct contact between the cheek and DUT. A mask may be used to help configuration of cheek + 6° tilt angle. The mask is a 32 mm wide conformal strip, created by sweeping the surface of the head phantom through a 6º rotation about the ear. Direct DUT contact against the mask thus establishes the required 6º spacing away from the cheek, regardless of DUT form factor. The material for the head phantom mask spacer shall have dielectric constant of less than 1.3 and a loss tangent of less than 0.003. Material additions can be used to help fixing of the mask spacer onto the head phantom.

4.3.3.2 Mono-blocks and closed sliders

This procedure applies to mounting mono-block DUTs and closed-slide DUTs, when the DUT is less than 56 mm wide. For consistent, repeatable positioning that conforms to the grip studies, an alignment tool with evenly spaced rulings is first used to measure the DUT. Alignment Tool A in Figure 4.3.3.2-1, features a 120º interior corner to ensure that the ring fingertip lands in the desired position at the bottom of the DUT. The DUT is then positioned in accordance with ruled markings on a conformal palm spacer regardless of any curvature in the DUT corners. DUTs with rounded corners will sit lower in the tool than DUTs having square corners, and thus give a different reading.

  1. Place the DUT face-up in Alignment Tool A with its side along the side ruler, and slide it down until it makes contact at the 120º corner. Record the bottom location of the DUT by reading off the bottom ruler of Tool A.
  2. Observe the top of the DUT against the side ruler of the tool. If the top of the DUT extends past the 120 mm marking on the side ruler, then the additional length beyond 120 mm shall be added to the reading from Step 1.
  3. Place the DUT on the right-handed or left-handed hand phantom spacer between the fingers. The bottom location of the DUT on the spacer should be aligned with the reading recorded in Steps 1 and 2. Vertical centreline of the DUT should be centred with the spacer. Make sure index finger is in contact with DUT.
  4. While keeping the DUT in the hand phantom in the position defined in previous steps, place the DUT and the hand phantom against the head phantom in such way that the DUT is in 6°tilt angle as described in Subclause 4.3.3.

Figure 4.3.3.2-1: Alignment Tool A and right-handed mono-block hand phantom with a spacer

NOTE: The Alignment tool is used to determine DUT bottom location on spacer. Use left-handed (mirror-imaged) spacers with left-handed phantoms.

4.3.3.3 Folds and open-slides

This procedure applies to fold and open-slide DUTs, when the DUT is less than 56 mm wide. To help maintain a consistent, repeatable positioning that conforms to the grip studies, an alignment tool with evenly spaced rulings is first used to measure the DUT. The DUT is then positioned in accordance with ruled markings on a phantom spacer. Alignment Tool B in Figure 4.3.3.3-1 features two rounded humps upon which the DUT is suspended. One hump represents the index fingertip of the hand phantom, while the other represents the palm spacer. This design helps ensure that the index finger remains in contact with the flip for any fold DUT geometry.

  1. Open the DUT and place it face-up on the alignment Tool B with its hinge suspended between the two humps. The side of the DUT shall be aligned against the side wall of the tool. The base of the DUT shall rest on the wide hump with ruled markings, and the flip of the DUT shall rest on the narrow hump.
  2. Tool B has an engraved line on the side wall. Align axis of a fold hinge to this marking. An open slider should be slide longitudinally until the base part of the DUT touches the narrow hump of the Tool B. Record the correct longitudinal position of the bottom of the DUT by reading off the ruler of Tool B. Visually align the two halves of the split-level ruler to minimize parallax reading error.
  3. Position the DUT in the right-handed or left-handed Fold Hand Phantom. It should be resting on the index fingertip and palm spacer, with the bottom of the DUT aligned to the ruling on the right-handed or left-handed palm spacer that corresponds to the reading from Step 2. Ensure that all fingertips are in contact with the DUT.
  4. While keeping the DUT in the hand phantom in the position defined in previous steps, place the DUT and the hand phantom against the head phantom in such way that the DUT is in 6°tilt angle as described in Subclause 4.3.3.

Figure 4.3.3.3-1: Alignment Tool B and right-handed fold hand phantom with a spacer

NOTE: Use left-handed (mirror-imaged) spacers with left-handed phantoms.

4.3.3.4 PDA

This procedure applies to DUTs that are from 56 to 72 mm wide. To help achieve a consistent positioning, the DUT is aligned to a PDA palm spacer. No alignment tool is required. The PDA spacer features side and bottom walls to ensure consistent alignment of DUTs of various sizes.

  1. Place the DUT on the PDA spacer between the fingers and align the DUT to the side wall of the PDA.
  2. If the DUT is shorter than 135 mm, then align the top of the DUT with the top of the PDA spacer. Otherwise, align the bottom of the DUT with the bottom wall of the PDA spacer.
  3. While keeping the DUT in the hand phantom in the position defined in previous steps, place the DUT and the hand phantom against the head phantom in such way that the DUT is in 6°tilt angle as described in Subclause 4.3.3.

Figure 4.3.3.4-1: Right-handed PDA hand phantom with a spacer

NOTE: Use left-handed (mirror-imaged) spacers with left-handed phantoms.