Filter
Top Products
Integrator’s Reference Manual
2-12 80-99208-1 Rev. D
Providing Power to the Modem
The GSP-1620 modem requires input DC power of 5.6 V to
16 V, 1 Amp (maximum), with a maximum of 50 mV
peak-peak ripple and noise.
Using the contents of the Modem Integrator’s Kit, you can
power your bench modem in two ways:
• Use the AC adapter on the Diagnostic cable
• Use an optional DC power supply connected to the
Interface cable bridle — this allows you to monitor exact
power levels
The use of a fuse is strongly recommended in the DC power
supply. A fuse with a minimum melting I
2
t rating of 0.02 A
2
seconds will be sufficient. For complete details about DC
power requirements and power supply impedances, see DC
Power on page 7-15.
Tip
For a quick bench setup or service programming, consider just using the
provided AC adapter to power the modem.
Caution
You CANNOT have both a DC power supply and the AC adapter
connected to the modem at the same time. This may cause the modem
to fail to power up and may damage the modem.
Note
The following power-on procedure is suitable for a bench setup.
However, if you are developing modem applications, follow the
power-on process explained in Power-On on page 7-17.