GTE Omni Si Database Technical Practices Issue 1 Manual

SW 5210TL-130500-1001
NOTE: Exercise caution when extending four-wire trunks
over metallic facilities that may convert longitudinal voltages
to metallic voltage prior to reaching the 
PABX.36.6.15 The systems are capable of supplying digitally
generated tones (the tone levels indicated refer to levels
of tones at their point of departure from the 
PABX towards a
station), which are used in normal operation and with various
features. See Table 4.2 for a description of these tones.
36.6.16 The minimum...

TL-130500-1001
Table 36.4 Optional Pads
IOPTION 1CABLEIFEETI
CIType 4162I321 to 550IIIIIGTS-8510351 to 650
(GT-16)
Transmission36.8
Test ProceduresAll systems are factory tested for transmission
performance. This paragraph provides a description of the
test procedures that are to be used if there is a need to make
transmission tests on the systems.
The path to be tested may be set up by using the available
test panels or by dialing up the connection in a normal fashion.
Refer to the appropriate section...

TL-130500-1001- output
100 MFBI-
T100 MF
O-800 
OHMS
4 Henries 100 OHMS- input 
----)
4 Henries 100 OHMS
DC Holding Coil
4 Henries
II
\
100 OHMSI
IIII
To
To
TEST
System SET
I100 MFDC Battery Feed
4 Henries
t
100 OHMS
hv-J--
100 MF
Figure 36.12
Hold Coil and Battery Feed Arrangements
SVR 52108187S-365 

TL-130500-1001Level Tracking36.8.3 To measure the level tracking error, proceed as follows
Error and(test objectives are listed in paragraph 36.6.4).
C-Notch Distortion
1. Establish a station-to-station, station-to-trunk, or trunk-to-trunk path through the system. (Provide dc holding for
stations or incoming loop trunk circuits and provide a battery
feed arrangement for CO-type loop trunk circuits as shown in
Figure 36.12.)
2. Connect both the 600-ohm oscillator and frequency selectivemeter through a 0-...

TL-130500-1001PABXT
LineLine T
CircuitCircuit. .__....r
RR
--I
DC Holding Coil
DC Holding Coil
or
DC Battery Feed
(see Figure 36.12)
(see Figure 36.12)0 
dBM
TT1 
Eiji& 204t03;Hz 1 ~.o~g;~H- 1
SendNote: See paragraph 36.5Receive
-.a^*- __. __--__wgure 3ti.13
Insertion LOSS and Frequency Response Measurement
Intermodulation
Distortion, Envelope36.8.4 To measure intermodulation distortion, proceed as
follows (test objectives are listed in paragraph 36.6.6).
Delay Distortion,
and Noise1. Establish a...

TL-130500-1001
To measure the envelope delay distortion, proceed as follows
(test objectives are listed in paragraph 36.6.8).
1. Use the same test configuration established in paragraph
37.4.3, 1 and 2 along with an envelope delay test unit, which is
set at a modulation frequency of 
83-l/3 Hz.
2. Adjust the send level for -10 
dBm. Adjust the test unit for
1,840 Hz equal to 
0~s.3. Vary frequency and record delta from 1840 Hz reading.
To measure path message and impulse noise, proceed as
follows (test...

TL-130500-1001PABX
. . . . . . . . . . . . . . . . . .T i. . . . . . . . . . . . . . . .._Line 
! iLinei -I-
I . . . . . . . .
R ;; R
. . . . . . . . . . . . . . . .._:.................DC Holding Coil
(see Figure 36.12)DC Holding Coil
(see Figure 36.12)
Send600 OHM Attenuator
0 to 
100dBT
RReceive
600 OHM Attenuator
1 KHZ atOto 
1OOdBOor 
+3dBm600 OHMS
Transmission
Measuring Set
(see Note 1)
SendNotes:
1. See paragraph 36.5.
2.For tracking measurements, adjust the
transmission measuring set to 
+3 dBM at...

TL-130500-1001PABX
70 i i line il
i or‘-.j ori
: trunk : j trunk :__ __. _. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .-...........-...........
i line : : line :i line : : line :
-i or7: or:-.i or ::-.i 01 :
-i trunk : : trunk i-i trunk : : trunk i
ZIN = 6001900 ZIN = 600/900
OHMS OHMS
i (1rDC Holding Coil
DC Battery Feed
(Figure 37.12) DC Holding Coil
hh
2.16MF
-Frequency
Selective
MeterTransmission
Measuring...

TL-130500-I 001OMNI PABX
T
. . . . . . . . . _. . . . . . . . . . . . . . .._. i Line ~------------j Line _
Quite Termination
i orori or
i Trunk
R
r----‘,,. . . .._......_..._.Tmk.....\System 
duietCode Termination
OMNI PABX
Ground
ZM = Metallic Impedance = 750 OHMS
RGround
EL= Longitudinal Voltage = 10 VatType 207
TLongitudinal
Balance
Test Set
Figure 36.16Longitudinal Attenuation Measurement
Longitudinal36.8.7 To measure longitudinal 
susceptability, proceed as
Susceptabilityfollows (test objectives...

TL-130500-1001
PABX-f- l!-----.: Y.------TPABX groundLJb nululrlyCoil or
DC Battery
Feed(see Figure
36.12)
600/
900
_ OHMS
2.16MF
AC
Q= 
10maMmaximum
RType 1200
1 .l RatioII-
1 OOOMF5 henries
200 OHMS
v- >-4ueu-
“I BG
ZM
750
( oh-(
tms
II
NOTES:
T1. Use LP strap for lines, BG straps for loop trunks, and NO
straps for E&M trunks.
2. The longitudinal 60 Hz generator will be adjusted to provide
50 VAC measured from tip or ring to ground or 
10ma of
logitudinal current.
LFigure 36.17Longitudinal...