Specifications

installation
MI 66-097
Section 2
Checking Out The System Installation And Isolating Any Failures
Checking The Installation
Resistance Check
Make the following resistance measurements at the
station connector blocks under the following conditions.
l AC power cord disconnected from electrical outlet.
l Common equipment connected to stat-on connector
blocks.
l Stations wired, and wiring punched down on blocks.
l Bridging clips removed from blocks to isolate
stations from common equipment.
1. Measure the resistance of each installed station
and wiring from the station side of the connector
blocks. Resistance values will vary with cable
length and station type but should be within the
following limits.
MEASURED PAIR MEASURED STATION
. VOICE PAIR
40 - 150
DATA PAIR
. -
2. Measure the resistance of the common equipment
and cables from the common equipment side of the
station connector blocks. Resistance values should
be within the following limits.
MEASURED PAIR
MEASURED COMMON
NT RESISTANCE
VOICF PAIR
1 DATA PAIR
1 0.3-0.5
Voltage Check
Refer to Table 3-3 and make the following voltage
measurements at the station connector blocks under
the following conditions:
l Bridging clips installed
l AC power connected to the common equipment
Measure the voltage across one voice line and one
data line and then across the other voice line and the
other data line for each even and odd station. The
measured voltage must be as follows:
General Check
1. Check the red light emitting diode (LED) system
status indicator. Be sure that it is on steady. If it is
off or flashing, disconnect and reconnect the AC
power plug.
2. Refer to the station User’s Guide for operating
information. Perform a general operational test of
the system by exercising the system features from
station port 10.
Table 3-3. Voltage Measurements
1 UNIT UNDER I 66M-xx BLOCK
I METER LEAD
I MEASURED