Giga-tronics 2508A, Operation Manual

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Inputs and Outputs
2500A Series Operation Manual, 34172 Revision C, March 2008
TRIGGER IN Used to trigger a List. Accepts a TTL level signal of > 50 ns width.
BLANKING A +5 volt output signal occurring at band crossings, filter switches, and retraces for the
duration of those events.
RAMP OUT A 0 to 10 volt ramp output scaled to the frequency sweep.
STOP SWP IN/OUT Stop Sweep I/O is a 5 volt, 2 K
Ω
, active low signal that temporarily interrupts an
instrument frequency or power ramp sweep. This feature is only available with 2500B
models with option 55 and 2500S models with options 55 and 44.
V/GHz An output voltage that is directly proportional to output frequency. For 26 and 40 GHz
models, the output is 0.25 volts per GHz. For 8 and 20 GHz models, the output is 0.5
volts per GHz.
100 MHz OUT A +5 dBm typical, AC coupled, 100 MHz low noise reference output signal into 50
Ω
.
10 MHz OUT A 2 Vp-p 10 MHz square wave reference output signal into 50
Ω
.
EXT REF IN The external reference input. Can be either a 10 MHz input that is >-5.0 dBm into 50
Ω
or a 100 MHz input > +5 dBm. The 100 MHz input level should not 8 dBm for
best performance
.
GPIB A 24-pin IEEE STD 488.2 connector for control of the instrument during remote
operation using GPIB.
RS-232 A DB-9 connector for control of the instrument during remote operation using RS-232
serial communications.
AC Power Input 90-253 VAC, auto-sensing, 47 Hz to 440 Hz.
1. Not available with Option 17A or 17B.
2. Not available with Option 17A
Table 1-3: 2500A Rear Panel I/O Connector Descriptions
Connector Label Description