NF FRA5014, Instruction Manual

Page: 37 / 107

3.3 I/O Terminals
FRA5014 3-7
3.3 I/O Terminals
3.3.1
Oscillator’s output terminal
The following are the main specifications for oscillator output terminal OSCILLATOR.
Maximum output voltage:

10 V/open,

5 V/50 Ω
Output impedance: 50 Ω, unbalanced
The voltage applied to the load varies according to the load
impedance.
Maximum output current: ±100 mA
When output is short-circuited and the DC bias is 0 V, setting the
AC amplitude to approximately 3.5 Vrms (5 Vpeak) will allow the
output current to reach this maximum allowable value.
Do not connected any load that exceeds the maximum output current and do not apply any
signal from an external source.
This may damage the
FRA5014
.
If the maximum output current is exceeded, the ERROR lamp may go on.
◼
Output voltage restriction
If the composite voltage from the AC amplitude and DC bias settings exceeds ±10 V/open,
output clipping may occur.
◼
Output when power is off
When the power has been turned off or during the period between power-on and
measurement-ready status, the output terminal is cut off the internal oscillator, with termination
resistance of 50 Ω. When the power is turned on or off, the output terminal briefly returns to
open status.
Do not apply signals from an external source, even when the power is off.
If voltage exceeding 5 V is applied, the
FRA5014
may be damaged.
Figure 3-3.
Oscillator’s Output Terminal
When the oscillator is off, the output voltage goes to 0 V but the output terminal is not cut off from
the internal circuits.
50 ohm
50 ohm
OUTPUT
OSCILLATOR
！
CAUTION
！
CAUTION