Ectron 560H, Инструкция по эксплуатации

Страница: 15 / 36

Model 560H Initial Checkout
14. Switch out the 100:1 input divider.
FREQUENCY RESPONSE (REFER TO
FIGURE 7-2)
1. Fashion a voltage divider with a ratio of
approximately 100:1 using the 10 k

and
100

carbon resistors. Do not use a
commercial decade voltage divider as most
have limited frequency response.
2. Change the gain of the amplifier under test to
100.
3. Adjust the function generator to a 1 V p-p
sine wave at 100 Hz.
4. Measure and record the output of the
amplifier (1 V p-p).
5. Change the function generator’s frequency to
200 kHz. Readjust the amplitude of the
generator to 1 V p-p if necessary.
6. Measure the output of the amplifier. It should
be 1 V p-p ±30%.
FILTERED OUTPUT (OPTIONS L, M,
AND N)
The frequency response on each bandwidth
setting can be checked at the filtered output J1,
Pin 1. The response should be

3 dB ±1 dB at
the appropriate cut-off frequency decreasing
by 12 dB/octave at higher frequencies. (The
rolloff in the wideband position will be
3 dB/octave.)
4-3