Manual - 8500A Series Peak Power Meter - Giga-tronics

Operation
2.4 Front Panel Description
The front panel controls, display, and connections are described in this section. The boxed numbers in
Figure 2-5 correspond to the boxed numbers in the description. The Peak, CW, and Graph keys in both
power meter models, and the Detector Select A and B keys of the Model 8502A contain lights in the
center of the buttons to indicate when the functions are active.
2 6 7 8 13 17
Peak Power Meter
Model 8502A
7 8 9
4 5 6
Clear
GHz kW
ms
Calibrator
1GHz
1
2 3
dB W
µs
On
Off
LL0
F1 F2 F3
Bksp
GPIB
LSN REM
Ready
TLK SRQ
New Data
dBm mW
0 . _
ns
Pulse/
Cursor Menu Freq Mem
Detector Select
A B
Peak CW Graph
Autoscale
Detector Input
A
B
1
3 4 5 9
14
10 11 12 15 16
Figure 2-5. Model 8502A Front Panel
1 Power This is the push-on push-off ac power switch to the PPM.
2 Display This is an Electro Luminescent (EL) alphanumeric and graphic display screen. It
presents data and shows pulse waveform profiles.
3 GPIB
Indicators
4 F1, F2, F3
Directional keys
Backspace
5 Ready, New Data
Indicators
These LEDs indicate whether the PPM is under local or remote control and the
current GPIB status (REM = remote control on, LSN = listen, TLK = talk, SRQ =
service request, and LLO = local lockout.)
The F1 (up) and F2 (down) directional keys are used in the Graph Mode to move the
cursor (∆ icon) up and down to select any pulse or cursor parameters that are to be
changed. The F3 (backspace) key is for correcting entered text or numbers.
A secondary function of these keys is to select menu functions as the various menus
are displayed.
These LEDs flash whenever the system is receiving a trigger. If the Ready light is
steadily on and the New Data light is off, it would indicate that a trigger was not
being received.
6 Data Entry Use this 12-button keypad to enter parameter data when instructed in the applicable
procedure.
Manual No. 20790, Rev C, November 1998 2-7
Superceded by Revision D, March 2009