由RAD制造的SRM-5A是一种异步调制解调器,用于数据记录器和计算机之间的本地通信。需要两个SRM-5A短运行调制解调器:一个在数据记录器端,一个在计算机端。每个短运行调制解调器均通过无条件的4线电话线或Cable2TP两翼对电缆传输。数据率最高为9,600 bps。
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Campbell Scientific建议通过SC932A接口将SRM-5A连接到Data Logger的CS I/O端口;需要9到25针适配器。可以将SRM-5A连接到Data Logger的RS-232端口,但配置更为复杂。有关更多信息,请联系Campbell Scientific。强烈建议使用传输线两端的电涌保护器。
| 金属丝 Gage |
9600 bps Data Rate |
1200 bps Data Rate |
| 19.Gage (0.9 mm) |
10.0 km (6.2 miles) |
12.2 km (7.6英里) |
| 24 Gage (0.5毫米) |
4.5 km (2.8英里) |
2.8 km (3.4英里) |
| 26量子 (0.4 mm) |
3.3公里 (2.0英里) |
4.0 km (2.5 miles) |
| Data Rates | Up to 9,600 bps |
| Transmission Mode | 异步,完整双工,4线操作 |
| 传输距离或面积 | 根据数据速率和电线量表,最多12.2 km(7.6 mi) |
| 线接口 | 5杆螺钉(4线和地面)连接器块,带有电缆应变的塑料盖 |
| Transmission Line | Cable2TP(对于短RS-232或固定装置)或无条件的4线电话线 |
| 传输水平 | 6 dBm |
| Terminal Interface | EIA RS-232-C/CCITT v.24,女性积分25针连接器 |
| 工作温度范围 | 0°至60°C(列出了制造商的温度规范。坎贝尔科学进行的有限测试表明,SRM -5A在-25°至 +50°C的温度下进行的SRM -5A进行。) |
| Current Drain at 12 Vdc |
|
| Altitude | Up to 3,000 m (10,000 ft) |
| 湿度 | 最多95%(非调节) |
| Service Requirements | Dedicated two-twisted pair cable connects one field station with base. |
| 方面 | 5.2 x 5.2 x 1.8 cm (2.1 x 2.1 x. 0.7 in.) |
| 重量 | 38 g(1.3盎司) |
笔记:The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.
| 产品 | 兼容的 | 笔记 |
|---|---|---|
| 21X(退休) | ||
| CR10(退休) | ||
| CR1000(退休) | ||
| CR10X(退休) | ||
| CR200X(退休) | ||
| CR206X(退休) | ||
| CR211X(退休) | ||
| CR216X(退休) | ||
| CR23X(退休) | ||
| CR295X(退休) | ||
| CR3000(退休) | ||
| CR500(退休) | ||
| CR5000(退休) | ||
| CR510(退休) | ||
| CR800 | ||
| CR850 | ||
| CR9000(退休) | ||
| CR9000X(退休) | Although the CR9000X is compatible, the SRM-5A does not support the CR9000X's maximum communication rate and therefore may not be practical for many CR9000X applications. |
The SRM-5A is compatible with the now retired SRM-6A; the two can be used on either end of the same line.
大多数制造商将与此应用程序兼容的电缆称为“ PE39电缆”。
| Company | 零件号 | awg | 盾牌类型 | Rodent Proof |
| 摄政 Anixter. Anixter. Essex. Essex. |
PE39 F-02P22BPN E-000622DFO BSWF BWFY |
19. 22 22 22 22 |
.008铝 .005铜 Steel/Aluminum .008铝 .005铜包装不锈钢 |
是的 是的 是的 No 是的 |
| Company | 零件号 | Outer Jacket | Messenger |
| Anixter. | F-02P19AAF | 19.HMW Polyethylene | .109高强度钢 |
悬挂电缆需要其他硬件;请联系您当地的Anixter代表以获取详细信息。
与之相关的常见问题解答数量SRM-5A:7.
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Campbell Scientific does not currently offer any.
从技术上讲,SRM-5A与CR200X系列数据编号兼容,但是将其与这些数据记录仪一起使用更为复杂。要将SRM-5A与CR200X系列Datalogger一起使用,SRM-5A必须位于电台调制解调器的DTE位置。此外,需要用户提供的适配器和性别改变器来完成数据记录器的SRM-5A和RS-232端口之间的连接。有关更多信息,请联系Campbell Scientific。
It is not cost effective to repair. The SRM-5A should be replaced.
Use the terminal mode of the Device Configuration Utility (select未知for Device type) set to 9600 baud. Click theConnect按钮打开终端屏幕。
在SRM-5A上,将RCV +与XMT +一起简短,然后将RCV - 连接到XMT - 连接。尝试使用计算机键盘键入字母和数字。如果这些内容未出现在终端屏幕上,则调制解调器会损坏,必须更换。确保回声输入box is NOT selected.
如果连接到CS I/O端口,则需要以下一个:
A connection can also be made to the RS-232 port. However, the switch on the SRM-5A must be in the DTE position on the station modem, and adapters and gender changers may be needed to complete the connection.
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