MDS MDS 9710 Series Specifiche Scaricare il pdf (Pagina 19)

MDS 05-3305A01, Rev. D MDS 4710/9710 I/O Guide 11

2.7 Using the Radio’s Sleep Mode

In some installations, such as at solar-powered sites, use Sleep Mode to

keep the transceiver’s power consumption to an absolute minimum. In

Sleep Mode, power consumption is reduced to less than 16 milliamperes

(nominal).

12 IN Radio Inhibit (Sleep). A ground on this pin places the

radio in sleep mode. It turns off most circuits in the radio,

including transmit, receive, modem and diagnostic

functions. This allows for greatly reduced power

consumption, yet preserves the radio’s ability to be quickly

brought online.

13 -- Do not connect—Reserved for future use.

14 IN PTT—Push-to-Talk. This line is used to key the radio with

an active-high signal of +5 Vdc.

15 -- User-Programmable Output 2—EIA-232-compatible

output controllable though GE MDS’ InSite NMS program.

See “User-Programmable Interface Output Functions” on

Page 36 for details.

16 IN PTT

—Push to Talk. This line is used to key the radio with

an active-low signal of 0 Vdc.

17 -- Do not connect—Reserved for future use.

18 OUT Accessory Power. Unregulated Output. Provides a

source of input power for low current accessories.

Excessive drain on this connection trips the self-resetting

fuse F1 on the transceiver PC board. The voltage at this

pin matches the input voltage to the transceiver.

19 OUT 9.9 Vdc Regulated Output. Provides a source of

regulated voltage at 100 mA for low power accessories.

20 -- Do not connect—Reserved for future use.

21 OUT RSSI—Received Signal Strength Indication. Connect a

DC voltmeter to this pin to read the relative strength of the

incoming signal. Figure 7 on Page 13 shows RSSI vs. DC

voltage.

22 -- User-Programmable Output 1—CMOS-compatible

output controllable though GE MDS’ InSite NMS program.

See “User-Programmable Interface Output Functions” on

Page 36 for details.

23 IN Diagnostic Channel Enable. A ground on this pin causes

the radio’s microcontroller to open the DB-25 DATA

INTERFACE for diagnostics and control instead of the

normal RJ-11 DIAG. connection.

24 -- Do not connect—Reserved for future use.

25 OUT Alarm. A logic low (less than 0.5 volts) on this pin indicates

normal operation. A logic high (greater than 4 volts)

indicates that some alarm condition is present. This pin

can be used as an alarm output, provided the internal

series resistance of 1 kΩ is considered.

Table 6. DATA INTERFACE Connector Pinouts (Continued)

Number

Input/

Output Pin Description

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 57 58

Commenti su questo manuale

Nessun commento

MDS MDS 9710 Series Specifiche Pagina 19

Commenti su questo manuale