Giga-tronics GT 9000, Руководство по эксплуатации и техническому обслуживанию

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2.3 The Rear Panel
This section explains the functions on the rear panel (see Figure 2-10).
2.3.1 BNCs
5-6 MHz IN
A 5 to 6 MHz input, at 2 Vpp (input impedance is 50
Ω
, nominal), for
controlling the frequency of the signal generator; it makes fine frequency
resolution control possible from an external synthesized source (increasing the
input above 5 MHz causes a one-for-one change in the RF output frequency).
REF OUT
A buffered sine wave output at 10 MHz, 2 Vpp into 50
Ω
, derived from the
internal or external timebase.
REF IN
An external timebase input signal, 10 MHz or 5 MHz, +1
×
10
-6
or better, 0.5
to 5 Vpp (input impedance is 100
Ω
, nominal); overrides the internal time
base. To specify the frequency of the external timebase, press [SHIFT]
[SPECIAL] [11]. Press [MODE] to toggle between the 10 MHz and 5 MHz
settings.
ALC IN An input signal for remote level control of output power by positive or
negative polarity ZBS detectors, or by applicable power meters (see
Section 1.3.20 for specifications).
PM VIDEO OUT A pulse modulation envelope waveform, at TTL levels (approximately 1 Vpp
into 50
Ω
).
PM SYNC OUT A 50 ns wide trigger pulse output, coincident with leading edge of the pulse
modulation envelope, at TTL levels (approximately 1 V into 50
Ω
).
AM SIG OUT
An amplitude modulation waveform output, at 2 Vpp into 1 M
Ω
.
.FM SIG OUT
A frequency modulation waveform output, at 2 Vpp into 1 M
Ω
.
Figure 2-10. The Rear Panel
Model GT 9000 Microwave Signal Generator
2-16
Manual No. 120AM00250, Rev C, September 1998