CH1786LC Cermetek Microelectronics, CH1786LC Datasheet
CH1786LC
Specifications of CH1786LC
Related parts for CH1786LC
CH1786LC Summary of contents
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... This label should be prominently displayed on the end product. 2004 Cermetek Microelectronics, Inc. FEATURES • Supports These 212,and Bell 103 • FCC Part 68 approved and DOT CSA CS-03 Part I approvable • UL 1950 and CSA C22.2 950 Listed • ...
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... The individual NVRAM telephone number storage locations are selected by specifying command will cause the modem to dial the stored telephone number in location n. NVRAM is not available on the CH1786LC or CH1786NH. SUPPORT FEATURES 2004 Cermetek Microelectronics, Inc. AT Command Set. A 40-character command line is supported. ...
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... Zero Power Mode (CH1786ET only). application calls for zero power during standby periods, the power may be switched off using external circuitry and then reapplied when the CH1786’s RI 2004 Cermetek Microelectronics, Inc. pin becomes active. The CH1786ET products can thus be powered down to zero. Answering ...
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... For this case, the following commands should be used to configure the CH1786 (Refer to Figure 4): Figure 4. Voice/Tone Injection. Enter: ATS0=<CR> Disables auto-answer Result: OK 2004 Cermetek Microelectronics, Inc. Enter: ATS7=255<CR> Result: OK Enter: ATS10=255<CR> Disables lost-carrier time Result necessary, use Failure to The following command sequences illustrate implementation of common Voice/Tone Port applications ...
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... AT[commands]<CR>. Where: AT represents attention sequence. [Commands] represents command strings. 2004 Cermetek Microelectronics, Inc. CH1786 Family of Ultra Small 2400bps Modems <CR> represents carriage return (ASCII 13 or HEX 0D). When entering commands to the modem, the backspace character-control-H (ASCII 8 or HEX 08) may be used to edit mistakes ...
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... Cermetek Microelectronics, Inc. Figure 5. CH1786 Application Diagram 2004 Cermetek Microelectronics, Inc. CH1786 Family of Ultra Small 2400bps Modems Page 6 Document No. 607-0004 Revision L4 (08/04) ...
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... CTS O CLEAR-TO SEND. Ground if not using the FAX option. Reserved for flow control when using FAX option. CTS only active on CH1786 when S24=255. 2004 Cermetek Microelectronics, Inc. Table 2. CH1786 Pin Descriptions FUNCTION Serial Receive data output. LOW indicates handshaking with a remote modem is in ...
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... The escape character code is set in register S2. At power-up, the guard time is set to 1 second minimum, and the escape character is set as “+.” There is no minimum delay between characters but the maximum delay is set by register S12. 2004 Cermetek Microelectronics, Inc. FUNCTION Status Message Command Executed Carrier detected at 300bps ...
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... Multiple commas may be used to generate integer multiples of the specified delay time. Redial Last Number. The repeat command is a convenient way to execute the previously entered command line. 2004 Cermetek Microelectronics, Inc. Example: Use A/, the repeat command, to redial the last telephone number dialed. Enter: Result: Return to Command State. ...
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... Restore Factory Default values using Zn command. 5. Restore Firmware Default values using &Fn command. The CH1786LC and CH1786NH products do not contain NVRAM and, therefore, do not support data storage after power down. A detailed definition of all commands and S-Registers is available from Cermetek Microelectronics, Inc. Refer to Cermetek Document AT Commands and S-Registers Reference Guide or access our website at www.cermetek.com. ...
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... No additional circuitry other than that shown in Figure may be connected between the modem module and the RJ-11C jack. Doing so will invalidate the FCC approval. 7. The CH1786LC, and CH1786NH (only) requires external surge protection (see Figure 7B). This is mandatory to maintain FCC Part 68 conveyed approval. ...
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... Cermetek recommends using sockets from Samtec. See Application Note # 130, Summary of Recommended Suppliers. 2004 Cermetek Microelectronics, Inc. FCC REGISTRATION All products in the CH1786 family are registered with the FCC under Part 68. ...
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... For information contact: (insert your company address). 2004 Cermetek Microelectronics, Inc. CH1786 Family of Ultra Small 2400bps Modems DEFAULT STATUS, PERFORMANCE, AND SPECIFICATIONS The following is a summary of the Default ...
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... CH1786s (except CH1786NH). No additional external components are required to maintain conveyed FCC Part 68 approval for all CH1786s Products (except CH1786NH). External 2004 Cermetek Microelectronics, Inc. protection as indicated in dashed Box 4 MUST BE included when using CH1786NH products. 4. Optional External Over Voltage and Lightning Protection ...
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... Originate 1200Hz ± .01% Frequencies V.22 bis, Answer V.22, 212A Bell 103 Originate ’space’ .01% Originate ‘mark’ .01% Answer .01% Answer .01% 2004 Cermetek Microelectronics, Inc. Specification Parameter Receive Carrier Frequencies V.22 bis, V.22, 212A Bell 103 Receiver Sensitivity full duplex over Billing Delay Hysteresis ...
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... Ring Voltage Loop Line Loop Current-(Off- Hook) Return Loss @ 1000Hz Ring Frequencies Receiver Insertion Gain Transmit Power First Character After Reset Inter Character Delay Command Delay Minimum Reset Pulse Duration 2004 Cermetek Microelectronics, Inc. Description Typical Maximum 20 25 75V 250V 20 100 ...
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... Guard Tone Amplitude High Channel Transmit Amplitude nd Guard Tone 2 Harmonic Distortion Call Progress 120 Passband Frequency Wait Time for Dial tone 2 Return loss @ 1000Hz Name SPK 2004 Cermetek Microelectronics, Inc. Typical Maximum Units -35 3 255 10 20 39/61 33/67 3000 550 -6 1800 ...
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... Cermetek Microelectronics, Inc. PIN NO Figure 8. CH1786 Physical Dimensions. 2004 Cermetek Microelectronics, Inc. Table 12. CH1786 Pin Functions. PACKAGE CONNECTION TABLE FUNCTION PIN NO. RING 12 TIP 13 RXA 14 TXA 15 SPK SLEEP TXD 21 RXD 22 Page 18 CH1786 Family of Ultra Small 2400bps Modems FUNCTION V/D DTR DSR RI CTS ...
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... Full function, Voice/Inject, NVRAM, Zero Power Option, FCC Part 68 Approved, UL 1950 Listed, Hermetic CH1786FX Full function, FAX, Voice/Inject, NVRAM, FCC Part 68 approved, UL 1950 Listed, Hermetic CH1786LC Full function, Voice/Inject, FCC Part 68 Approved, UL 1950 Listed, Hermetic CH1786NH Full function, FCC Part 68 Approved, Non-Hermetic, Listed UL 1950 Cermetek reserves the right to make changes in specifications at any time and without notice ...