Using The Radio's Sleep Mode - GE MDS 4710A Technical Manual

12
Table 6. DATA INTERFACE Connector Pinouts (Continued)
Pin Input/
Number Output
13 --
14 IN
15 --
16 IN
17 --
18 OUT
19 OUT
20 --
21 OUT
22 --
23 IN
24 --
25 OUT

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 15 mA (nom-
inal), yet preserves the radio's ability to be brought online quickly.
All normal functions are suspended while the radio is in Sleep Mode.
PWR
The LED is off, except for a quick flash every 5 sec.
MDS 4710/9710 Technical Manual
Pin Description
Do not connect—Reserved for future use.
PTT—Push-to-Talk. This line is used to key the radio with
an active-high signal of +5 Vdc.
User-Programmable Output 2—EIA-232-compatible
output controllable though GE MDS' InSite NMS program.
See "User-Programmable Interface Output Functions" on
Page 39 for details.
PTT—Push to Talk. This line is used to key the radio with
an active-low signal of 0 Vdc.
Do not connect—Reserved for future use.
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.
9.9 Vdc Regulated Output. Provides a source of
regulated voltage at 100 mA for low power accessories.
Do not connect—Reserved for future use.
RSSI—Received Signal Strength Indication. Connect a
DC voltmeter to this pin to read the relative strength of the
incoming signal. Figure 8 on Page 15
voltage.
User-Programmable Output 1—CMOS-compatible
output controllable though GE MDS' InSite NMS program.
See "User-Programmable Interface Output Functions" on
Page 39 for details.
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.
Do not connect—Reserved for future use.
Alarm. A logic low (less than 0.5 Vdc) on this pin indicates
normal operation. A logic high (greater than 4 Vdc)
indicates that some alarm condition is present. This pin
can be used as an alarm output, provided the internal
series resistance of 1 k is considered.
shows RSSI vs. DC
MDS 05-3305A01, Rev. E