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DSR Status During Local Loopback

Choosing option 6 in the Software Switch Menu takes you to the

DSR Loop Status Menu (below).  This option controls the behavior of
the DSR output during local loopback.  To force DSR high (ON) during
local loopback, enable this option.  To force DSR low (OFF) during a
local loopback, disable it.

Rate Converter/DTE Rate

Choosing option 7 in the Software Switch Menu takes you to the

Rate Adapter/DTE Rate Menu (opposite page).  The Model 2500RC
Series rate converter adapts a 56 Kbps or 64 Kbps line rate to slower
DTE data rates.  Set the Rate Converter to match the DTE data rate.  If
the DTE data rate is the same as the line rate, disable rate conversion
by selecting item 6 on this menu.

(continued)

19

20

NOTE:

For DTE data rates of 56 kbps or 64 kbps, set the rate 

adapter to “Line Rate = DTE Rate”, and set the Line Rate to 56 or 
64 kbps, respectively.  For DTE rate of 57.6 kbps, set rate adapter 
to “Line Rate = DTE Rate”, set line rate to 56 kbps, set DTE for two
stop bits, and set CSU/DSU character length to “11 bits”. 

DTE Loop Control

Choosing option 8 in the Software Switch Menu takes you to the

DTE Loop Control Menu (below).  The local and remote loopbacks on
the Model 2500RC Series can be controlled from the DTE interface by
raising or lowering the LL and RL signals.  To allow the DTE to control
these loopbacks in this manner, enable this option.  Disable if you want
the Model 2500RC Series to ignore these signals.

Clock Mode

Choosing option 9 in the Software Switch Menu takes you to the

Clock Mode Menu (below).

Summary of Contents for 2500RC

Page 1: ...ls 2500RC 2510RC and 2520RC All Rate CSU DSU Rack Mount Card SALES OFFICE 301 975 1000 TECHNICAL SUPPORT 301 975 1007 http www patton com Part 07M2500RC D Doc 099011U Rev E Revised 1 23 08 C E R T I F...

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Page 3: ...etalized connector and configure the rear card as shown in section 3 3 of this manual 1 1 RADIO AND TV INTERFERENCE The Model 2500 Series generates and uses radio frequency energy and if not installed...

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Page 5: ...er This number may be obtained from Patton Electronics Technical Support 301 975 1007 http www patton com or support patton com Notice Packages received without an RMA number will not be accepted Patt...

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Page 7: ...els 2510RC 2520RC The unit can be used in Switched 56 applications Set the Line Rate to 56 Kbps Set the Mode switches for Switched 56 and enable Force RTS and Circuit Assurance Dial or store a number...

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Page 9: ...n On 2 4 Kbps On On Off 4 8 Kbps On Off On 9 6 Kbps On Off Off 19 2 Kbps Off On On 56 Kbps Off On Off 64 Kbps Off Off Off Force configuration pointer to default to Hardware Switches See Section 3 2 Fo...

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Page 11: ...Loop 3 1 2 Switch Set S2 The configuration switches on switch S2 control the Rate Adapter DTE Rate Clock Mode Anti Stream Timer and RTS CTS Delay The table below shows factory default settings for Sw...

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Page 13: ...Various Line Rates S2 8 CTS Delay 56 19 2 9 6 4 8 2 4 Off Normal 0 3 0 9 1 9 3 8 7 5 On Extended 1 3 3 8 7 5 15 30 3 1 3 Setting the Reversible Interface Driver Board The Model 2500RC Series supports...

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Page 15: ...a time The Model 2500RC Series Main Menu should then display on the terminal screen see below 3 2 2 Using the Software Menu System The Model 2500RC Series Menu System operates as follows 1 All select...

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Page 17: ...interface at a lower rate To do this set the line rate to 56 or 64 Kbps Then set the DTE Speed as required Software Switch Menu option 7 Circuit Assurance Choosing option 2 in the Software Switch Menu...

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Page 19: ...provided the DTE equipment is configured to transmit two stop bits The extra stop bit reduces the DTE s effective data rate to allow synchronization with the 56 kbps line speed Set the Model 2500RC S...

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Page 21: ...bits DTE Loop Control Choosing option 8 in the Software Switch Menu takes you to the DTE Loop Control Menu below The local and remote loopbacks on the Model 2500RC Series can be controlled from the DT...

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Page 23: ...Choosing option b in the Software Switch Menu takes you to the RTS CTS Delay Menu below This option lets you set the RTS CTS turn on delay to Normal or Extended The delay interval decreases as the lin...

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Page 25: ...is a detailed description of each strap s function DTE Shield Pin 1 FRGND JB3 In the connected position this strap links DB 25 pin 1 frame ground In the open position pin 1 is lifted from frame groun...

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Page 27: ...ed conveniently 4 1 1 The Rack Power Supply The power supply included in the Model 1000R16 rack uses the same mid plane architecture as the modem cards The front card of the power supply slides in fro...

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Page 29: ...status of communication Figure 12 below shows the location of the LEDs on the Model 2500RC Series front panel Note also the location of the test mode switches and RS 232 control port used in Switched...

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Page 31: ...itches go to the Main Menu and select item 2 Read Configuration This will take you to the Read Configuration Menu below In the Read Configuration Menu you may select item 1 to read the hardware switch...

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Page 33: ...l Line Loop Menu see below To activate LAL select item 1 LAL Test Procedure Once LAL is activated the Model 2500RC Series transmit output is connected to its own receiver The Test LED should be lit Fo...

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Page 35: ...out making visits to a customer s premises CSU Loop The CSU Loop is activated when the central office reverses the DC sealing current that flows between the TX pair and the RX pair In this case the Mo...

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Page 37: ...eries automatically dials this number when the DTE raises the DTR lead When you issue this command the Model 2500RC Series responds with this prompt Enter up to 12 digits without hyphens or other alph...

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Page 39: ...S point to point or multipoint campus area point to point Indicators LED indicators for TD RD CTS CD DTR No Signal Out of Service Error and Test Mode Diagnostics V 54 compliant local and remote loopba...

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Page 41: ...le 1000RPSM 2 120 240V Front Power Supply Module 1000RPEM DC DC Rear Power Entry Module 1000RPSM 48A 48V Front Power Supply Module 1000RPEM V 120 240V CE Compliant Rear Power Entry Module 1000RPSM V 1...

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Page 43: ...rame Ground 2 TD 3 RD 4 RTS 5 CTS 6 DSR 7 SGND Signal Ground 8 CD 15 TC 17 RC 18 LL Local Loop 20 DTR 21 RL Remote Loop 24 XTC 25 TM Test Mode CONTROL PORT INTERFACE 8 Position modular connector compl...

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Page 48: ...n any of the following ways to tell us how you like this product and how we can meet your product needs today and in the future Web http www patton com Sales E mail sales patton com Support E mail sup...

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