Tektronix TLA 720, Service Manual

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Jumper Settings
TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual
4–23
Enhanced Monitor Board Jumpers
The enhanced monitor board has two jumpers accessible from the rear of the
mainframe. Figure 4–15 shows the factory default settings of these jumpers.
+5V Standby sourced from
monitor backup power supply
(default)
+5V Standby sourced
from P9, pins 8 & 21
MODID12
MODID01
(default)
Figure 4–15: Enhanced monitor board jumpers
You can also select the source of the +5 V Standby voltage. If you source the
+5 V Standby voltage from the +5 V external supply (monitor backup power
supply connector), then the external supply will provide the backplane with the
+5 V external voltage (1 A maximum). If you source the +5 V Standby voltage
from the 25-pin connector, you must provide the +5 V to pins 8 and 21 of the
25-pin connector. The default jumper setting is to provide the voltage from the
external source (+5 V external power supply).
The enhanced monitor can answer to the slot 1 or slot 12 MODID line for the
configuration manager. The default position is slot 12.