1756-RM模塊,A-B使用書
MVME761過渡模塊準備MVME761轉換模塊（圖1-12）和P2適配器板是與MVME2603/2604基板一起使用。MVME761的功能包括：? 并行打印機端口（符合IEEE 1284-I）
? 支持10BaseT/100BaseTX連接的以太網接口
? 兩個EIA-232-D異步串行端口（標識為COM1和前面板上的COM2）
? 兩個同步串行端口（前端的串行3和串行4面板），可配置EIA-232-D、EIA-530、V.35或X.21協議? 兩個60針串行接口模塊（SIM）連接器，用于配置串行端口3和4MVME761的P2
1756-RM模塊適配器板的功能包括：
? 一個50針連接器，用于連接SCSI設備的SCSI電纜
? 跳線可選SCSI端接電阻器
? 由+5V直流電源開發的熔斷SCSI終端電源接頭P2處
? 連接MVME761串行端口1和2的64針3M連接器在MVME2603/2604基板的MVME761兼容型號上，配置異步串行端口（串行端口1和2）永久作為數據電路終端設備（DCE）。港口配置如第1-29頁圖1-13所示。串行端口3和4的配置同步串行端口、串行端口3和串行端口4是可通過串行接口模塊（SIM）組合進行配置選擇和跳線設置。下表列出了SIM卡連接器和對應于每個同步串行端口的跳線頭。端口3路由至板連接器J7。端口4在板上可用接頭J8。有八個串行接口模塊可用：? EIA-232-D（DCE和DTE）? EIA-530（DCE和DTE）? 五、 35（DCE和DTE）? 十、 21（DCE和DTE）您可以為上述任何串行協議配置串行端口3和4通過安裝適當的串行接口模塊并設置相應的跳線。SIM卡可以根據需要單獨訂購。
MVME761 Transition Module Preparation
The MVME761 transition module (Figure 1-12) and P2 adapter board are
used in conjunction with the MVME2603/2604 base board.
The features of the MVME761 include:
? A parallel printer port (IEEE 1284-I compliant)
? An Ethernet interface supporting 10BaseT/100BaseTX connections
? Two EIA-232-D asynchronous serial ports (identified as COM1 and
COM2 on the front panel)
? Two synchronous serial ports (SERIAL 3 and SERIAL 4 on the front
panel), configurable for EIA-232-D, EIA-530, V.35, or X.21
protocols
? Two 60-pin Serial Interface Module (SIM) connectors, used on
configuring serial ports 3 and 4
The features of the P2 adapter board for the MVME761 include:
? A 50-pin connector for SCSI cabling to SCSI devices
? Jumper-selectable SCSI terminating resistors
? Fused SCSI terminator power developed from the +5V DC present
at connector P2
? A 64-pin 3M connector to the MVME761Serial Ports 1 and 2
On MVME761-compatible models of the MVME2603/2604 base board,
the asynchronous serial ports (Serial Ports 1 and 2) are configured
permanently as data circuit-terminating equipment (DCE). The port
configuration is illustrated in Figure 1-13 on page 1-29.
Configuration of Serial Ports 3 and 4
The synchronous serial ports, Serial Port 3 and Serial Port 4, are
configurable through a combination of serial interface module (SIM)
selection and jumper settings. The following table lists the SIM connectors
and jumper headers corresponding to each of the synchronous serial ports.
Port 3 is routed to board connector J7. Port 4 is available at board
connector J8. Eight serial interface modules are available:
? EIA-232-D (DCE and DTE)
? EIA-530 (DCE and DTE)
? V.35 (DCE and DTE)
? X.21 (DCE and DTE)
You can configure Serial Ports 3 and 4 for any of the above serial protocols
by installing the appropriate serial interface module and setting the
corresponding jumper. SIMs can be ordered separately as required.
