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HP 8620C INTERNAL CONNECTIONS
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All the connections between the HP 8620C Sweep Oscillator and any of the RF Plug-In's are via a 36 way Amphenol 'Blue' socket (8620C) and plug (RF Plug-In).
Socket J6
In this view of the 8620C
the pin numbering is:
Top
36 - 18
to
19 - 1
Bottom
In this view of the 8620C
the pin numbering is:
Top
36 - 18
to
19 - 1
Bottom
In this view of the
RF Plug-In
the pin numbering is:
Top
18 - 36
to
1 - 19
Bottom
RF Plug-In
the pin numbering is:
Top
18 - 36
to
1 - 19
Bottom
|
8620C Socket J6 |
8620C Function |
| Pin 1 | Tuning Voltage Output |
| Pin 2 | CW and Manual Gate |
| Pin 3 | RF Blanking (Switched) |
| Pin 4 | 0.1 to 0.01 Sec Range Position |
| Pin 5 | External AM |
| Pin 6 |
Switched 1kHz AM |
| Pin 7 |
Sweep Time Adjust |
| Pin 8 |
Stop Sweep Pulse |
| Pin 9 |
+20V Frequency Reference |
| Pin 10 |
Frequency Reference Ground |
| Pin 11 | -10V Frequency Reference |
| Pin 12 | n.c. |
| Pin 13 |
RF SW POS 1 DR Cont |
| Pin 14 | n.c. |
| Pin 15 |
RF SW POS 2 DR Cont |
| Pin 16 | n.c. |
| Pin 17 | n.c. |
| Pin 18 |
Sequential Sync |
| Pin 19 |
Attenuation Enable |
| Pin 20 | 10dB |
| Pin 21 | 20dB |
| Pin 22 | 40dB |
| Pin 23 |
Sweep Out J1 |
| Pin 24 |
RF Blanking (Unswitched) |
| Pin 25 |
Decoder Band 2 |
| Pin 26 |
Decoder Band 1 |
| Pin 27 |
Decoder Band 4 |
| Pin 28 |
Decoder Band 3 |
| Pin 29 |
-40V |
| Pin 30 |
Unregulated -10V |
| Pin 31 | -10V |
| Pin 32 |
Ground High Current |
| Pin 33 |
+5V |
| Pin 34 | +20V |
| Pin 35 |
Ground Low Current |
| Pin 36 |
ALC Marker |
|
8620C Socket J6 |
8620C Function |
NOTE: The 8620C Functions are used as required by the various HP 86200 Series RF Plug-Ins.
February 2010
An Extender Cable (08620-60032) is required to operate the RF Plug-In outside of the 8620C for maintenance purposes. As these seem to be very hard to find, I decided to make one up from a 36 way Centronics socket out of a scrap Epson printer and the correct 36 way Amphenol Blue plug (supplied by Steve K, thank you). A fairly time consuming task!
An Extender Cable (08620-60032) is required to operate the RF Plug-In outside of the 8620C for maintenance purposes. As these seem to be very hard to find, I decided to make one up from a 36 way Centronics socket out of a scrap Epson printer and the correct 36 way Amphenol Blue plug (supplied by Steve K, thank you). A fairly time consuming task!
August 2019
All the 8407A & 8410C based Network Analyser System, including the 08620-60032 Extender Cable, has now been Sold.
All the 8407A & 8410C based Network Analyser System, including the 08620-60032 Extender Cable, has now been Sold.