Canoga Perkins 2240 Operation & User’s Manual

Text of Canoga Perkins 2240 User Guide:

• 76 Canoga Perkins 4.9 Programmable Buffered Interface / Model P53 Signal Full Name Direction TxD Transmit Data To Modem RxD Receive Data From Modem SCR Serial Clock Receive From Modem SCT Serial Clock Transmit From Modem SCTE External Clock Transmit To Modem Table 4-O. BNC Supported Signals The Model P53 Interface Module complies with EIA Standard RS-530 while all clock, data

• Canoga Perkins 2240, 50 Canoga Perkins 4.4 RS-530 Interface Model 430 NOTE: The -430 interface supersedes the previous -R30 interface for 2240 applications. The -430 interface is a superset of the -R30. If exact compatibility with the older -R30 is desired, the DCD jumper can be moved from the factory strapped CTRL setting (end-to-end RTS-DCD control lead pair always enabled) to CD (DCD function selected by main board CD / DCD and CD / SYNC switches). This interface conforms to EIA RS-530. The interface uses RS-422 (balanced) electrical signals for all interface circuits (data, clock and control), except for the loopback and test mode pins which use RS-423 (unbalanced bipolar) electrical signals. Jumper

• Canoga Perkins 2240, 2240 Fiber Optic Modem 55 4.5 CCITT V.35 (ISO 2593-1993) Model 436 This interface complies with CCITT Standard V.35 and ISO 2593-1993. Electrical characteristics comply with V.35 for clock and data signals and RS-232 levels for control signals. This interface uses the physical connector type and pinouts specified in ISO 2593-1993 (refer to Table 4-E). The V.35 interface uses a 34 pin female Winchester connector for the physical connection. Note that the table lists the function name shown in ISO 2593 and an aka where applicable. The rest of this section refers to the ISO 2593 function name and aka interchangeably. For example, the ak

• Canoga Perkins 2240, 2240 Fiber Optic Modem 101 7. Specifications 7.1 Optical Interface Composite Error Rate: 1 in 10 10 or better Fiber Optic Cable Compatibility: 50 and 62.5 micron Multimode or 8 to 10 micron Single Mode fiber Transmitter: LED (850nm) Laser diode (1310nm or 1550nm) HI / LO Optical Power Switch: Reduces transmit power to accommodate a zero loss link Wavelength: 850, 1310 or 1550 nanometers Fiber Optic Connector: ST or FC type Fiber Optic Receiver: 850nm standard PIN diode 1310nm Laser PIN (InGaAs) 1550nm Laser PIN (InGaAs) Transmission Code Biphase multiplexed Typical Fiber Optic Link Loss Budget: 850nm LED 15 dB with 62.5/125 mm fiber 1310nm LP Laser 13 dB with 8 or 10/125 s

• 2240 Fiber Optic Modem 59 4.5.4 DSR Jumper The DSR jumper controls the behavior of the DSR signal. The CCITT turns DSR OFF when the far-end 2240 modem has a local loopback active. The TEST position causes DSR to turn OFF (negate) whenever any loopback is active at one or both modems. Factory Setting = CCITT 4.5.5 CH_GND Jumper The jumper selects whether chas

• Canoga Perkins 2240, 8 Canoga Perkins 4.9.2 Generic Interface ................................................................... 81 4.9.3 External Station ..................................................................... 82 4.9.4 Internal ................................................................................. 83 4.9.5 External ................................................................................. 84 4.9.6 DTE Adapter ......................................................................... 85 4.9.7 Legacy Adapter ..................................................

• Canoga Perkins 2240, 72 Canoga Perkins Table 4-M. Configuration Switch Settings There are three different types of interface connectors, and each is identified by the number at the end of the interface code of the order number (refer to Table 4- N). The connectors are female DA-15 (4B1); four-position terminal block (4B2); or two female BNCs (4B3). Figure 4-2 shows how the input and output pairs are wired to these connectors.

• 106 Canoga Perkins PERKINS' MAXIMUM LIABILITY SHALL NOT EXCEED AND CUSTOMER'S REM- EDY IS LIMITED TO EITHER (i) REPAIR OR REPLACEMENT OF THE DEFECTIVE PART OF PRODUCT, OR AT CANOGA PERKINS' OPTION (ii) RETURN OF THE PRODUCT AND REFUND OF THE PURCHASE PRICE, AND SUCH REMEDY SHALL BE CUSTOMER'S ENTIRE AND EXCLUSIVE REMEDY. A.4 Customer Service Departme

• Canoga Perkins 2240, 22 Canoga Perkins 2.2 Setup The setting up of the 2240 Modem includes the two-section HI / LO optic power switch, internal control switches and the signal ground strap. The setup, as described in the following sections, provides the initial configurations for operation of the unit. 2.2.1 HI / LO Optic Power Switch All versions, except for ELED and LP Lasers models, incorporate an optic power level dual DIP switch for varying the transmit power of the fiber optic LED or Laser (see Figure 2-1). Both sec

• Canoga Perkins 2240, 48 Canoga Perkins Local Loopback (LL) and Remote Loopback (RL) are loopback control leads and perform the same functions as the 2240 front panel LOOP switch LOC and REM positions. LL and RL are interface signal inputs which can be used to activate the LOC or REM loop functions. These signals can control the loopback functions only if the front panel switch is in the center OFF position. 4.3.1 RS_BIAS Jumper The RS_BIAS jumper controls the state that RS floats to when there is no signal driving the RS pin. The OFF position forces this signal to the OFF (negated) state when the interface cable is disconnected. The ON position forces i

• Canoga Perkins 2240, 70 Canoga Perkins 4.6.2.1.2 DCD Jumper The DCD jumper determines the source of the DCD output. In the CTRL posi- tion, the DCD output functions as the output for the RTS input at the far end. In the CD jumper position and with local RTS ON, CTS will turn ON either when the modem’s fiber optic receiver is in sync (main PCBA internal switch S1 CD / DCD = OFF and CD / SYNC = ON) or the state of the RTS signal at the far end (main PCBA internal switch S1 CD / DCD = ON and CD / SYNC = OFF). Refer to Section 2.2.2.1 for more information on the internal switch S1 CD / DCD and CD / SYNC positions. Factory setting = CTRL 4.6.2.

• 78 Canoga Perkins Figure 4-5. Available Strapping Options for Programmable Buffered Interface KG Swing Jumpers Internal Clock From Modem Rx Data Tx Clock Tx Data Modem Alarm From Fiber To Fiber Delay Line Inverter FIFO Data Out Data In Shift Out Shift I n Wire Wrap Header J3 W19 W20 8 SG FG CTS DSR RTS FIFO Clock SCTE TxD xD From Modem To Modem To Modem 10 3 16 17 9 15 12 5 12 19 13

• Canoga Perkins 2240, 2240 Fiber Optic Modem 53 4.4.5 SCT Switch This slide switch selects whether the SCT leads are outputs (OUT position) or inputs (IN position). The OUT position makes the 2240 "pure-DCE" and RD data is shifted out in sync with the 2240-supplied SCR clock. The IN position makes the SCT leads inputs and the 2240 will shift RD out in sync with the customer- supplied clock on the SCT leads if the main board XTCLK (W26) jumper is ON. Refer to Section 2.2.6 on the use of the XTCLK jumper. Fac

• Canoga Perkins 2240, 54 Canoga Perkins 4.4.8 CTS (A) Jumper This jumper selects the electrical characteristic of the CTS (A) lead. In the NORM position, the CTS (A) is a normal RS-422 balanced driver, as per RS-530. The KG position is intended for interfacing to cryptography equipment. If you are not interested in KG applications, leave this jumper in the factory NORM position and skip the following KG jumper settings for the -430 interface. In the KG position, CTS (A) follows the DTR input at the far end and the output is driven by an unbalanced driver whose output voltage swing is controlled by the KG_SWING jumper and whose sense is controlled by the KG_OUT jumper. Fac

• Canoga Perkins 2240, 42 Canoga Perkins 4.2 RS-423 / 232D Model 432 NOTE: The maximum data rate for this interface, 153.6 kbps, is limited by the interface driver slew rate. This interface is electrically compatible with EIA RS-423A. It will also operate with RS-232D systems when adhering to the more limiting RS-232D specifica- tions (20 kbps and 2500 pF cable capacitance). EIA standard RS-423A does not reference physical connector types or pinouts. This interface uses the physical connector type and pinouts specified in RS-232D (refer to Table 4-A). The

• Canoga Perkins 2240, 2240 Fiber Optic Modem 73 This interface performs jitter attenuation of the transmit line input signal. It is also designed to propagate an all "1's" AMI stream if the end-to-end line is interrupted at any point. When using any of the Transparent Bipolar Interfaces, the 2240 modem rate and mode front panel DIP switches should be set as follows: 1-4 = closed, 5-7 = open (Rate 0, Mode 7). In addition, the first two positions of the internal DIP switch S1 must be: CD / DCD = OFF and CD / SYNC = ON. Refer to Section 2.2.2

• Canoga Perkins 2240, 10 Canoga Perkins List of Tables 1-A Control Leads Available................................................................ 12 2-A Link Loss Range ............................................................................ 22 3-A Mode Switch Positions................................................................... 30 3-B Locked External Rates .................................................................. 30 3-C Standard Internal Clock Rates ..................................................... 31 3-D Group 4 Internal Clock Rate Divide Ratio.................................. 33 3-E St

• Canoga Perkins 2240, 2240 Fiber Optic Modem 39 I N T E R N A L O P T I O N S W I T C H E S F A C T O R Y S E T O F F O N O F F O F F O N O F F O F F O N O F F O N C D / D C D C D / S Y N C A L M / C H A N A L M / L O C A L M / R E M A L M / I N V C L K / E X T T B L / N O R M I N T E R N A L O P T I O N S W I T C H E S R E L A Y O P T I O N J U M P E R C O N T A C T P O W E R J U M P E R S E X P A N D E D I N T E R F A C E C O N N E C T O R N C N O O N O F F O N O F F S T A N D A R D I N T E R F A C E C O N N E C T O R A U X I N T E R F A C E C O N N E C T O R H I / L O W O P T I C

• Canoga Perkins 2240, 2240 Fiber Optic Modem 79 Table 4-P. Delay Times for Programmable Buffered Interface Figure 4-6. Board Layout for Programmable Buffered Interface W8 W9 W7 W14 W13 W12 -6V +/-6V +6V 100 ohm CHASSIS GND W2 W1 SHORT J3 RSTBIAS OFF ON KG NORM W18 W17 W6 W5 W19 W20 Test GND DSR W16W15 Dl1 Sw1 W10 W11 INVERT NORM KG OUT SW1 Position Delay Time (O)pen (C)losed P53 1234 CCCC * * 20 ns O C C C 30 ns C O C C 40 ns O O C C 50 ns C C O C 60 ns O C O C 70 ns C O O C 80 ns OOOC 90 ns CCCO 100 ns O C C O 110 ns C O C O 120 n

• Canoga Perkins 2240, 98 Canoga Perkins 6.2 Loopback Test Diagnostic Procedure Step Symptom Possible Cause(s) Action 1 No Sync Indication. Defective fiber optic Continue to the modem(s), cable(s) to the next step. or connectors. If the modems are con- figured for a tail circuit (one is externally locked and the other is slave), verify that the externally locked 2240 has a clock on its TT (or equivalent) leads that matches its rate switch. 2 Verify the optical cable loss. Remove the Tx fiber from the modem. Use the optical power meter and fiber optic jumper cable to determine the optical launch power for this modem. Reconnect the Tx fiber to the modem. Remove the Rx fiber from the

• Canoga Perkins 2240, 2240 Fiber Optic Modem 61 4.6.1.1 RS-449 / DC-37 Interface This interface complies with EIA Standard RS-449. Electrical characteristics comply with RS-422 for clock and data signals and RS-423 for control signals. The interface uses the physical connector type and pinouts specified in RS-449 (refer to Table 4- H). The RS-449 / 422 interface uses a 37-pin, female D-Type connector for the physical connection. Table 4-H. RS-449 Pinouts for Model MC1 Pin RS-449 Direction Number Pin Name A/B (abbrev) (full name) 1 SHLD shield - 4/22 SD send data to modem 5/23 ST send timing from mod

• 80 Canoga Perkins Table 4-R. Strap Configurations for RLSD (CD) Output The W1 / W2 strap connects chassis ground to signal ground (W2 position), connects chassis ground through 100 ohms to signal ground (W1 position), or isolates chassis ground from signal ground (jumper out). The W5, W6 and W7 jumpers, when installed, ground the midpoints of the 100 ohm termination resistances of t

• Canoga Perkins 2240, 2240 Fiber Optic Modem 89 Table 4-U. Jumper Strap Options JUMPER DESCRIPTION FACTORY CONFIGURATION ID TW TW8 T22 T88 D22 D88 W3 / W4* W3 = VCO disabled W4 W4 W4 W4 W4 W4 W4 = VCO enabled W5 / W6** W6 = Normal SCT W6 W6 W6 W6 W6 W6 W5 = Inverted SCT W5 / W6 W7 = Shield connected to W7 W7 W7 W7 W7 W7 chassis ground W8 = Shield connected to signal ground W9 / W10 W9 = Chassis ground W10 W10 W10 W10 W10 W10 connected to signal ground W10 = Not connected E2 TxD

• Canoga Perkins 2240, 2240 Fiber Optic Modem 91 4.10.3 Model T22 The signaling used on this interface is RS-422A. Five TwinAx connectors (BJ-77, 3-lug) are used for the physical connection (see Figure 4-17). 4.10.4 Model T88 The signaling used on this interface is Mil-Std 188-114C. Five TwinAx connec- tors (BJ-77, 3-lug) are used for the physical connection (see Figure 4-17). 4.10.5 Model D22 The signaling used on this interface is RS-422A. A standard 37-position, D-type female connector (DC-37) is used as th

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