SECTION 3
3-18
INSTRUMENT
DESCRIPTION
9
11
12
10
• •
• •
•
•
• •
TX
RX
REF
VF
OUT
T1
PRINTER
AC
ADAPTER
BATTERY
CHARGING
Figure 3-4
Top Panel Test Connections
RX INPUT Switch
7
This three-position switch selects the input imped-
ance and signal conditioning for the RX jack. A
configurable input impedance allows the T-BERD
107A to accommodate signals attenuated by cable
loss or resistive circuits. Changing the
RX INPUT
switch position causes a test restart.
BRIDGE
— Provides an input impedance greater
than 1000
Ω
for bridging lines that are already
terminated. The BRIDGE setting provides com-
pensation for cable losses of up to 35 dB. This is
useful for bridging across repeater cable pair
input and outputs.
Summary of Contents for T-BERD 107A
Page 81: ...SECTION 3 3 42 INSTRUMENT DESCRIPTION ...
Page 203: ...6 20 SECTION 6 PRINTER OPERATION ...
Page 239: ...C 18 STRESS PATTERNS APPENDIX C ...
Page 249: ...INTELLIGENT APPENDIX D NETWORK EQUIPMENT D 10 ...
Page 261: ...INDEX T BERD 107A INDEX 12 ...