AT&T System 85 Installation And Test page 152

b. For No. 30044-002 (Figure 91), connect a dB meter (600-ohm bridged) to TP7 and
TP8. From a distant end transmitter, transmit a 1004-Hz signal at the proper
system level. Set the switches on S8 and S9 to achieve the proper system level.
3. On No. 30003-002, set switch S10 as shown in Table BA.
4. On No. 30044-002, set switches S2, S3, S5, and SIO as shown in Table BB.
S2
S3
S10
-to. ON
1=1.
IN
S2
IICI
OUT
IN OUT
S8
Si TEST
SWITCH
S3
13W
TRANSMIT ATTENUATOR
cm
cm
OM
1311
S9
RECEIVE ATTENUATOR
NORMAL TANDEM
PBX
IN OUT IN OUT IN OUT IN OUT IN OUT IN OUT
111.6
013.2
116.4
TRANSMIT
-16 dBm
Page 136
S8
59
52
S3
RECEIVE
+7 dBm
▪ .1
11.2
11.
4
▪ .8
RECEIVE
0 dBm
S8
S9
3
.2
.4
ID .8
1.6
E3.2
E6.4
1112.8
TRANSMIT
0 dl3m
52
S3
11.1
11.
2
11.4
11.
8
1116
133.2
116.4
E12.8
S8
S9
11.1
11
.2
£1
.4
11.
8
011.6
E3.2
E6.4
11 12.8
RECEIVE TRANSMIT
0 dBm -2 dBm
Figure 8 9 . 30003-002 4-Wire E&M Channel Unit