HP 8648 A/B/C/D - Changpuak.ch

Rear Panel Operation
Rear Panel
1. 10 MHz REF INPUT
and OUTPUT
2. DISPLAY
CONTRAST
3. AUXILIARY
INTERFACE
1 b-56 Operation Reference
These connectors provide the input and output ports for the
instrument’s timebase reference. The instrument will lock to a 2 MHz,
5 MHz, or 10 MHz external reference source connected to the input
that is within f5 ppm. When the internal timebase is being used, the
output connector provides a 10 MHz, 1 Vrms level signal.
This knob controls the front panel display contrast. Display contrast
can be optimized for viewing the display from above, below, or
directly in front of it.
Connect the HP 83300A Remote Interface or the HP 83301A Memory
Interface to this connector for operation with the instrument. Refer
to “Remote Interface” and “Memory Interface” in this section for
information about operating these devices.
CTS (input) RTS (output)
ot71 a