CH1786
CH1786 is CH1786 Family of Ultra Small 2400bps Modems manufactured by Unknown Manufacturer.
FEATURES
- Supports Standards 212,and Bell 103
CCITT
V.22bis,V.22,Bell
- FCC Part 68 approved and DOT CSA CS-03 Part I approvable
- UL 1950 and CSA C22.2 950 Listed
- UL File Number: E104957
- AT mand structure with extensions
- 1500 VAC RMS isolation barrier minimum, 2122V peak surge protection minimum
- Single 5 volt operation
- Low power operation with automatic reduced power standby mode
- Automatic adaptive equalization and fixed promise
- Size: 1.01 ”x 1.27 ”x 0.52 ”(nominal)
- NVRAM allows storage of custom configurations and telephone numbers
CH1786 FAMILY
CH1786 NVRAM, Voice/ Inject, Operating Temperature: 0°C to +70°C Hermetic,
CH1786ET
NVRAM, Voice/ Inject, Hermetic, Operating Temperature: -40°C to +85°C Non-Hermetic, Operating Temperature: 0°C to +70°C
CH1786NH
Figure 1. Functional Block Diagram of CH1786. The CH1786 es with FCC Part 68 approval and is shipped from the factory with an FCC Part 68 label indicating the registration number and ringer equivalent. This label should be prominently displayed on the end product.
Figure 2. Voice/ Data Port Control
2003 Cermetek Microelectronics, Inc.
Page 1
Document No. 607-0004 Revision L1 (06/03)
Cermetek Microelectronics, Inc.
CH1786 Family of Ultra Small 2400bps Modems
DESCRIPTION
OF FUNCTIONAL BLOCKS AND DISCUSSION OF BASIC OPERATIONS
Figure 1 contains a functional block drawing of the CH1786. The CH1786 is a highly integrated, fullfunction modem, prised of a modulator/ demodulator, controller, NVRAM and an FCC Part 68 approved and UL 1950/CSA C22.2 950 listed PSTN line interface. Modulation/Demodulation and Modem Controller. These functions are provided by a monolithic modem integrated circuit. This...
