User's Manual

Document:
TBD
Page:
10 of 42
ENGINEERING
Documentation
Revision:
1.6
Date:
24-May-17
Title:
TND540 Requirement
Proprietary and Confidential
This document contains confidential and property information which belongs to Rand McNally, Inc. This
document may not be copied, reproduced, or transmitted to others in any manner, nor may any use of the
information on this document be made, except for the specific purposes for which it is transmitted to the
recipient without prior written consent of Rand McNally, Inc.
Minimum TX power: 0 dBm (Class 2)
Maximum RMS DEVM: ≤ 0.20 (π/4 DQPSK)
Maximum RMS DEVM: ≤ 0.20 ( 8DQPSK)
* Bluetooth is used for data communication with other Bluetooth
enabled devices.
* Bluetooth circuit can be depopulated.
* Bluetooth and Wi-Fi circuit will share the same antenna to reduce
implementation cost.
Bluetooth (Radiated Sensitivity)
Need to get measurements from Apical / targets from the chip
vendor
TMC
No internal TMC receiver
Audio
Microphone N/A
Audio Out Unit shall have a 3.5mm audio jack
Audio requirement
Speaker Minimum Rated Input Power: 2.0 Watts — same as speaker
on 518s, scan SPL of 530 as criteria
Impedance: 4 +/- 15% Ohm
Audio Amplifier Output Power: 2 Watts at < 10% distortion, and <15%
distortion at full volume.
Speaker shall be mounted on the housing with screws, with sealed
front/back isolation.
Speaker Frequency Range: 200 Hz—20 kHz @ > 78 dB SPL(?) @ 0.5m
(?)
Yes, we should get an audio consultant to help us define the spec;
Power And Reset
Power Input (Via USB port)
Input Voltage: 5V +/- 5%
Maximum Input Current: 2A
Low-power mode Yes via OS control; auto-reduced backlight;
Power Mode
TND540 shall support following power mode:
● On
● Low power mode (CPU running with screen off)
○ Unit shall enter “low power mode” from “On
mode” after user press the power button;
○ Unit shall exit “low power mode” to “on mode”
after user press the power button;
PDF 檔案使用 "pdfFactory Pro" 試用版本建立 www.pdffactory.com