Chapter 7 HP 53131A/132A Specifications
Time Base
7-4
Assembly-Level Service Guide
7
Note that power to the time base is maintained when the counter is placed in standby via the front panel switch. The internal fan will continue to
operate under this condition, to maintain long-term instrument reliability.
Time Base
Internal Time Base Stability
Standard
(0° to 50°C)
Medium Stability
Oven (Option 001)
High Stability Oven
(Option 010)
Ultra High Stability
Oven (Option 012)
Temperature Stability:
(referenced to 25°C)
< 5 x 10
–6
< 2 x 10
–7
< 2.5 x 10
–9
< 2.5 x 10
–9
Aging Rate
(after 30 days)
Per Day:
Per Month:
Per Year:
< 3 x 10
–7
< 4 x 10
–8
< 2 x 10
–7
< 5 x 10
–10
< 1.5 x 10
–8
< 1 x 10
–10
< 3 x 10
–9
< 2 x 10
–8
Turn-on stability vs. time:
(in 30 minutes)
< 2 x 10
–7
(referenced to 2 hours)
< 5 x 10
–9
(referenced to 24 hours)
< 5 x 10
–9
(referenced to 24 hours)
Calibration:
Manual Adjust
Electronic
Electronic
Electronic
External Time Base Input Specifications
External Time Base Input Characteristics
Voltage Range:
200 mVrms to 10 Vrms
Damage Level:
10 Vrms
Threshold:
0 V
Impedance:
1 k
Ω
Input Capacitance:
23 pF
Frequency (53131A):
1 MHz, 5 MHz or 10 MHz
(automatic selection)
Frequency (53132A):
10 MHz
Internal vs. External Time Base Selection:
Manual:
Select Internal or External
Automatic:
Internal used when External not present
(default)
Time Base Output Specifications
Output Frequency:
10 MHz
Voltage:
> 1 Vpp into 50
Ω
(centered around 0 V)
Summary of Contents for 53131A
Page 1: ...Assembly Level Service Guide HP 53131A 132A 181A 225 MHz Counter ...
Page 2: ......
Page 14: ...Contents xii Assembly Level Service Guide ...
Page 22: ...Preface xx Assembly Level Service Guide ...
Page 23: ...1 Performance Tests Verifying Specifications ...
Page 97: ...2 Service ...
Page 149: ...3 Replacing Assemblies Disassembly and Reassembly ...
Page 173: ...4 Retrofitting Options ...
Page 191: ...5 Replaceable Parts ...
Page 201: ...6 Backdating Manual Changes ...
Page 218: ...Chapter 6 Backdating Backdating Specifications 6 18 Assembly Level Service Guide 6 ...
Page 219: ...7 HP 53131A 132A Specifications ...
Page 235: ...8 HP 53181A Specifications ...
Page 246: ...Chapter 8 HP 53181A Specifications General Information 8 12 Assembly Level Service Guide 8 ...
Page 252: ......
Page 254: ... Manual Part Number 53131 90039 Printed in U S A MARCH 1999 ...