CH1786LC Cermetek Microelectronics, CH1786LC Datasheet - Page 13

• Manufacturer Part Number: CH1786LC
• Manufacturer: Cermetek Microelectronics

Specifications of CH1786LC

• Main Category: Single Chip
• Data Rate: 2.34375Kbps
• Power Supply Type: Analog
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (max): 5.25V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Lead Free Status / RoHS Status: Supplier Unconfirmed

Cermetek Microelectronics, Inc.
In certain circumstances, it may be necessary for the
telephone company to request information from you
concerning the equipment which you have connected
to your telephone line.
telephone company, provide the FCC registration
number and the ringer equivalence number (REN);
both of these items are listed on the equipment label.
The sum of all of the REN’s on your telephone lines
should be less than five in order to assure proper
service from the telephone company. In some cases,
a sum of five may not be useable on given line.
Consult your telephone provider.
If Problems Arise.
equipment is not operating properly, you should
immediately remove it from your telephone line, as it
may cause harm to the telephone network. If the
telephone company notes a problem, they may
temporarily discontinue service. When practical, they
will notify you in advance of this disconnection. If
advance notice is not feasible, you will be notified as
soon as possible.
When you are notified, you will be given the
opportunity to correct the problem and informed of
your right to file a complaint with the FCC. Contact
your local telephone service provider if you have nay
questions about your phone line.
In the event repairs are ever needed on the (insert
your product name), they should be performed by
(insert your company name) or an authorized
representative of (insert your company name). For
information contact: (insert your company address).
2004 Cermetek Microelectronics, Inc.
If any of your telephone
Upon request of the
Page 13
DEFAULT STATUS, PERFORMANCE, AND
SPECIFICATIONS
The following is a summary of the Default
Configuration
Microelectronics, Incorporated, prior to delivery
of the CH1786.
Async mode selected
2400bps
Bell 212A operation at 1200bps
Even parity
Auto answer enabled (Disabled on CH1786NH)
Command echo ON
All result codes enabled –extended
Wait for dial tone before dialing =2 seconds
Detects busy signal
Full word result codes
Pulse dial make/break ratio =39/61
DSR enabled
Modem ignores DTR
DCD enabled (Disabled on CH1786NH)
Speaker enabled but off when receiving carrier
Speaker volume set to medium
Local modem will grant RDL request from remote
modem
Guard tones disabled
Minimum DTR pulse width =0.1 seconds
Ring count =01 (CH1786)
Escape code character =43
Carriage return character =13
Line feed character =10
Back space character =08
Duration of wait for dial tone =02 seconds
Duration of wait for carrier after dialing =30 seconds
Duration of dial pulse (comma)=02 seconds
Carrier detect response time =0.1 seconds
Escape code guard time =1 second
Length of use after comma =2.0 seconds
Last carrier to hang up delay =0.1 seconds
DTMF interdigit delay =0.1 seconds
DTMF Attenuation =-4dB
Sleep mode inactivity time =5 seconds
Long space disconnect disabled
CH1786 Family of Ultra Small 2400bps Modems
Profile
Document No. 607-0004 Revision L4 (08/04)
installed
by
Cermetek