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參數(shù)資料
| 型號(hào)： | CH1792 |
| 英文描述： | MODEM |
| 中文描述： | 調(diào)制解調(diào)器 |
| 文件頁(yè)數(shù)： | 9/16頁(yè) |
| 文件大小： | 1942K |
| 代理商： | CH1792 |
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2000 Cermetek Microelectronics, Inc.
Page 9
Document No. 607-0003 Revision G (05/00)
Table 5C. CH2056 Extended Result Codes.
Return to Command State.
The modem can be forced to reenter the command state after
dialing (without hanging up) by ending the dial command with
a semi-colon. This is useful when using the modem as an
auto dialer.
Automatic Answering.
S0=0*
S0=1-254
S0=255
DO NOT ANSWER TELEPHONE
ANSWER ON RING 1 TO RING 254
ANSWER ON RING 255
*When S0 is set to 0, the modem will not auto-answer.
PHONE LINE CONNECTION GUIDELINES
1.
The HS Modem must be mounted in the final assembly
such that it is isolated from exposure to any hazardous
voltages within the assembly. Adequate separation and
restraint of cables and cords must be provided.
2.
The circuitry from the HS Modem to the telephone line
interface must be provided in wiring that carries no other
circuitry other than that specifically allowed in the FCC
rules (such as A and A1 leads).
3.
Connection to phone line should be made through an RJ-
11C jack.
4.
PCB traces from the modem’s RING and TIP pins to the
RJ-11C jack must be 0.1 inch spacing or greater to one
another and 0.2 inch spacing or greater to all other
traces. The traces should have a nominal width of
0.020 inches or greater.
The RING and TIP PCB traces should be as short as
possible and oriented to prevent coupling other high
speed or high frequency signals present on the host
circuit PCB.
No additional circuitry other than that shown in Figure 7
may be connected between the modem module and the
RJ-11C Jack. Doing so will invalidate the FCC
approval.
The HS Modem, the RJ-11 Jack, the interfacing circuitry
and all PCB traces in between, must be contained on a
PCB with a 94 V-0 flammability rating.
The supplied FCC registration label must be applied
visibly on the outside of the product.
The product’s User Manual must provide the user with
instructions for connection and use as recommended in
the FCC Registration Section below.
5.
6.
7.
8.
9.
CANADIAN APPROVALS
The HS Modem family is approveable for use by DOT to
CSA CS-03 Part I. However, per Canadian procedures,
approval can only be granted after the HS Modem has been
installed into the end product. Typically, Canadian approval
is obtained by submitting the final end product to an
independent test house or consultant for evaluation. The
test house/consultant then forwards the test results and
applicable documents to the regulatory agency. Cermetek
offers a list of consult-ants to assist with this process.
HS MODEM HANDLING AND ASSEMBLY
RECOMMEN-DATIONS
The HS Modem contains static-sensitive components and
should only be handled by personnel and in areas that are
properly protected against static discharge.
There are two mounting techniques that are recommended
for physically connecting the HS Modem to a PCB:
1. Direct soldering
2. Sockets.
Direct Soldering.
The HS Modem may be wave soldered onto a circuit card.
All HS Modem products are hermetically sealed and will not
be harmed by industry standard wave soldering processes.
Socketing.
The socketing approach to mounting eliminates cleaning
and desoldering concerns. When the socket is used, it must
make a solid connection to all pins. Failure to do so will
cause unreliable or intermittent operation. Also, steps
should be taken to assure that the module remains tightly
seated in the socket after the end product is shipped.
Cermetek recommends socket CES-150-01-T-S by Samtec,
50 pin strip socket.
FCC REGISTRATION
All products in the HS Modem family are registered with the
FCC (except the CH1799LL) under Part 68. To maintain the
validity of the registration, you must serve notice to the end
user of the product of several restrictions the FCC places on
the modem and its use.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CH1793 | MODEM |
| CH1793ET | Telecommunication IC |
| CH1793LT | Telecommunication IC |
| CH1798 | Telecommunication IC |
| CH1798ET | MODEM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CH1793 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MODEM |
| CH1793ET | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| CH1793LT | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| CH1794 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HIGH SPEED Modem and FAX FAMILY |
| CH1794A | 制造商:Cermetek Microelectronics 功能描述:Modem Chip Single 57.6Kbps 22-Pin |
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