BRTS-100 ISDN TEST SET

 

 

CHECK POWER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PUT CIRCUIT IN

 

 

 

 

POINT TO POINT

 

 

 

 

CONFIG. (CONFIG. 1)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DOES

 

NO

 

 

TERMINAL

 

 

 

NEED PHANTOM

 

 

 

 

POWER?

 

 

 

RED

 

 

 

YES

GRN

 

 

 

 

 

PHANTOM

 

 

 

 

 

 

 

 

 

LIGHT?

 

 

 

 

 

 

 

NONE

 

 

 

 

 

 

 

 

 

TX & RX

NO

 

 

PAIRS

BATTERY

 

 

TRANSPOSED

FROM NT1

 

 

CHECK POWER

If the terminal requires power from the line, this procedure will verify that power is being transmitted properly. Assumes the Test Set is in NORMAL mode.

DOES

 

 

YES

 

 

TERMINAL NEED

 

 

 

 

 

 

PS2 POWER?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

GRN

RED

 

 

 

 

 

 

AUX LIGHT?

 

 

 

 

 

 

NONE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

WIRES

POWER OK

 

 

BATTERY

ON PINS 7

 

 

ON PINS

 

& 8 ARE

 

 

 

 

 

 

 

7 & 8

CROSSED

Figure 4-5. Check power flow chart.

4.4 Check Loop

This procedure checks for physical impairments in the S/T interface. See Figure 4-6 for an outline of the functions performed during this test. Before implementing this procedure, you must meet the following prerequisites:

The terminal should be receiving proper power (see CHECK POWER, page 14).

LINE TEST should fail.

20

Page 21
Image 21
Black Box BRTS-100 manual Check Loop, Check Power