Motorola SG 2000 operation manual FeatureDescription, DS-SG2-DRT-2X/A features

O p e r a t i o n 5 - 2 3

Table 5-9 provides information on the user-related features of the DS-SG2-DRT-2X/A:

Table 5-9

DS-SG2-DRT-2X/A features

FeatureDescription

Test point A and B

Input A and B

Increment attenuator setting

Decrement attenuator setting

Change increment/ decrement direction

Restore factory default setting

Status

Alarms

No alarm

Over temperature (> + 85°C) Low + 24 Vdc (< + 18 Vdc) Low + 5 Vdc (< + 4.5 Vdc) Low + 2.5 Vdc (< + 2.2 Vdc)

Laser bias/optical power out of spec.

RF input B

These test points enable monitoring of the RF level at the input to the A/D. It measures − 20 dB from the A/D input level.

The transmitter has a digitally controlled attenuator that adjusts for varying input levels. These push-buttons are input level-control adjustments that provide + 2 to − 13 dB of adjustment from an input level of 15 dBmV. No action is taken if both buttons are pressed.

Short press (0.1 to 1.5 seconds). The status LED indication is green with a short OFF blink (0.25 sec.) when the button is released. A short red blink occurs if the increment attempts to go past the maximum.

Short press (0.1 to 1.5 seconds). The status LED indication is green with a short yellow blink (0.25 sec.) when the button is released. A short red blink occurs if the decrement attempts to go past the minimum.

Medium press (1.5 to 5.0 seconds). The status LED is OFF after

1.5seconds when in the increment direction, and yellow when in the decrement direction. The LED is restored to its green or alarm state when the button is released. No increment or decrement occurs.

Long press (5.0 seconds or longer). The status LED flashes green and yellow rapidly until the button is released. After five seconds of flashing, the factory defaults are restored.

This tri-color LED is green if all parameters are within specification. A series of red flashes indicate an alarm condition. The number of red flashes indicate the parameter that is outside the specification.

Status LED indication:

Steady green

Long red, one red flash (repeating) Long red, two red flashes (repeating) Long red, three red flashes (repeating) Long red, five red flashes (repeating) Long red, six red flashes (repeating)

This input is the second RF return signal that is obtained from the adjacent transmitter connector through a provided cable. The cable is illustrated in Figure 5-27.

It is recommended that you restore the factory default settings before you set up the node levels. This procedure places the transmitter input level 2 dB below maximum.

SG 2000 Installation and O peration Manual