DLT 400-ACM architectural and engineering specifications
Architectural/Consultant Specs The transceiver shall be a digital spread-spectrum (DDS), simultaneous full duplex wireless production intercom device. The portable transmitter unit shall be capable of transmitting and receiving audio simultaneously on the 2.4 GHz ISM band. The device shall be capable of transmitting radio signals by rapidly changing the carrier frequency (frequency-hopping) in order to avoid interference and to provide a secure method of communication. The device shall be able to include up to 1,024 units in a group. Each group shall be possible to divide into up to 4 subgroups, which the Lead unit (and optionally secondary lead units) can switch between. In addition, a Lead unit shall be able to address all sub-groups simultaneously through all-call functionality. The device shall allow customized naming of the subgroups. Any device in the group shall be capable of being programmed as the Main Sync device, which all other devices connect to. It shall be possible for any device to be programmed to be allowed to initiate a private call with the Lead unit. The device shall have a talk button to activate the built-in or external microphone and to broadcast the audio signal to other transceivers and receivers with a transmission range of up to 900 ft (274 m). The unit shall employ 87-bit encryption for audio transmission with the ability to add another 128+87-bit encryption layer that requires an encryption pin to be entered on the receiving devices. The device shall have a signal-to-noise ratio of 73dB (A-weighted) and shall have an audio frequency response of 100 Hz – 7.2 kHz. The device shall provide a 3.5 mm TRRS CTIA headphone jack that accepts a headset microphone or a microphone. The device shall provide a built-in microphone that shall be automatically disabled when the headphone jack is engaged. The device shall have volume control buttons to adjust the headset’s volume. The device shall incorporate further control buttons for setup and operation and a corresponding OLED display that indicates the setup menu, operating mode, channel, time, battery status, and signal strength. and 100 Hz – 11.5 kHz in all other modes. The device shall have a THC (total harmonic distortion) of less than 0.1% @ 1 kHz. The device shall operate for up to 16 hours with a built-in rechargeable Lithium-polymer battery and shall have a battery-saving sleep mode. The approximate battery charging time shall be 5 hours. The device shall provide a USB-C port for use with a USB charger and two charging contacts for use with a multi-slot charger. The device shall have the option of being lanyard-worn or with a belt clip case. The Williams AV Digi-Wave ACM (DW 400-ACM) is specified.
DLT 400-ACM
| Dimensions | 2.60”W x 4.22”H x 0.50”D (66 mm x 107.3 mm x 12.6 mm) |
| Weight | 3.3 oz (94 g) including battery |
| Color | Black/Silver (Front/Back) |
| Case Material | Black ABS plastic |
| Battery type | Lithium Polymer with smart charge built into transceiver; 1800 mAH |
| Battery life | Up to 16 hrs talk time per charge@ 1ch Tx and 1ch Rx |
| Power Save | Auto Sleep Mode after 5 minutes of no RF signal from compatible devices |
| Charge time | 5 hrs. approx. |
| System Voltages | OLED 14VDC; RF 5VDC; Logic 3.3 VDC |
| Operating frequencies | 2.4 GHz (ISM band); 2402 – 2476 MHz FHSS |
| Audio Frequency response (-3dB Level) | INT24, Q&A INTP, ADV. Comms, Intercom and Court Mode: 100 – 7,200 Hz Other Modes: 100 – 11,500 Hz |
| SNR | 73 dB (A-weighted, default Rx volume with mic input ) |
| THD | 0.1 % (Default Volume, 1kHz) |
| Microphone input | Internal microphone (disabled when MIC jack engaged) and 3.5 mm phone jack (sleeve) with electret microphone bias, adjustable gain with 63dB range. |
| Line Input | USB-C, Adjustable level |
| Headphone Output | 3.5 mm TRRS headphone jack; 25 mW, R 32 ohms |
| Audio Output | Headphone: Max SSPL 90 111.8dB (EAR 013), 116.8dB (EAR 041) Line: USB-C, Adjustable level |
| Range | Up to 900 ft (274 m) (depending upon environmental conditions) |
| Modulation | FSK |
| RF Output | 19 dBm Typical |
| Security | 87-bit encryption (300 Series Compatible), 87+128 bit Encryption, Encryption PIN, Lock for settings |
| Side tone | -6 dB below volume, tone variation (Off, Low and High settings available) |
| Indicators | OLED |
| LEDs | Red LED around Talk button when enabled; Bi-color, changing green and red LED at top |
| Charging Connectors | USB-C; Two contacts for use with CHG 412 |
| Compatible Receiver | DLR 400 RCH (with firmware 1.3.0 or greater) |
| Operating Temperature Range | 14º to 113ºF (-10º to 45ºC) |
| Approvals | FCC, Industry Canada, CE, RoHS 3, WEEE, RCM, ANATEL, KC, Giteki |
| Warranty | 2-years warranty against component failure and manufacturing defects. 1 year on the internal battery. See Full Warranty on the website for details. |
CHG 412
| Dimensions: | 9″L x 7″W x 1.5″H (23 cm L x 17.8 cm W x 3.8 cm H) |
| Weight: | 1.8 lbs (845 g) |
| Enclosure: | Black, ABS plastic with metal base |
| Power Supply Input: | TFP 066, 90-240 VAC input, 1.5 A max * |
| Power Supply: | Universal DC adapter, 5 VDC – 6A output, center positive |
| Output Rating: | 5 VDC, 0.5 A per bay (12 charging bays) |
| Charging Time: | ~5 hours |
| Unit Capacity: | 12 Units |
| Compatible Units: | Transceiver: DLT 400 Receiver: DLR 400 RCH |
| Indicators: | Charge status indicators on DLT or DLR |
| Approvals: | CE, FCC, WEEE, RoHS, CB |
| Warranty: | 2-year (cables and power supply warranty for 90 days) |
* Eight separate CHG 412s (each powered by their own TFP 066 power supply) can be connected to a 15-amp circuit.
Warranty
2 Years

